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Side Effects > Acetaminophen

Acetaminophen Side Effects

Brand Names: Tempra 1, Mapap, Genapap

Please note - some side effects for Acetaminophen may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA at http://www.fda.gov/medwatch/ or 1-800-FDA-1088 (1-800-332-1088).

Side Effects of Acetaminophen - for the Consumer

Acetaminophen/Chlorpheniramine/Phenylephrine

Dizziness; drowsiness; dry mouth, nose, or throat; headache; nausea; nervousness; trouble sleeping.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Chlorpheniramine/Phenylephrine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; dark urine or pale stools; difficulty urinating; hallucinations; high blood pressure; rapid pulse; severe nervousness; stomach pain; tremors; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen/Caffeine/Phenyltoloxamine

Anxiety; drowsiness; dry mouth, nose, or throat; heartburn; nausea; nervousness; thickening of mucus in the nose and throat; upset stomach.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Caffeine/Phenyltoloxamine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); bloody or black stools; confusion; dark urine or pale stools; decreased urination; diarrhea; difficulty swallowing; dizziness; hearing loss; hoarseness; persistent sore throat or other signs of infection; ringing in the ears; severe stomach pain; unusual bruising or bleeding; unusual tiredness; vomiting; yellowing of the skin or eyes.

Acetaminophen/Dichloralphenazone/Isometheptene

All medicines may cause side effects, but many people have no, or minor, side effects. If any of the following most COMMON side effects continue or become bothersome when using Acetaminophen/Dichloralphenazone/Isometheptene, check with your doctor: Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Acetaminophen/Dichloralphenazone/Isometheptene:

Temporary dizziness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dichloralphenazone/Isometheptene:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine or pale stools; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen/Diphenhydramine/Phenylephrine

Constipation; diarrhea; dizziness; drowsiness; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Diphenhydramine/Phenylephrine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine; difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; mood or mental changes; pale stools; seizures; severe drowsiness; severe or persistent dizziness, nervousness, lightheadedness, or headache; severe or persistent trouble sleeping; stomach pain; tremor; vision changes; yellowing of skin or eyes.

Acetaminophen/Pentazocine

Constipation; dizziness; drowsiness; exaggerated sense of well-being; headache; lightheadedness; nausea; sweating; vomiting.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Pentazocine:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); blistered, red, or swollen skin; confusion; disorientation; fast heartbeat; fainting; hallucinations; mental or mood changes; seizures; severe dizziness; severe stomach pain; tremor; trouble sleeping; trouble urinating; vision problems or blurred vision; weakness.

Acetaminophen/Butalbital

Dizziness; drowsiness; intoxicated feeling; lightheadedness; nausea.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Butalbital:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); confusion; seizures; severe drowsiness; shortness of breath; slurred speech; stomach pain; weakness.

Acetaminophen/Salicylamide

Dizziness; drowsiness; heartburn; nausea; upset stomach; vomiting.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Salicylamide:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); bloody or black stools; confusion; dark urine or pale stools; decreased urination; diarrhea; difficulty swallowing; dizziness; hearing loss; hoarseness; persistent sore throat or other signs of infection; ringing in the ears; severe or persistent vomiting; severe stomach pain; unusual bruising or bleeding; unusual tiredness; yellowing of the skin or eyes.

Acetaminophen/Chlorpheniramine/Dextromethorphan/Pseudoephedrine

Constipation; diarrhea; dizziness; drowsiness; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Chlorpheniramine/Dextromethorphan/Pseudoephedrine:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; trouble sleeping; vision changes; yellowing of skin or eyes.

Acetaminophen/Caffeine/Pyrilamine

All medicines may cause side effects, but many people have no, or minor side effects. No COMMON side effects have been reported with Acetaminophen/Caffeine/Pyrilamine . Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Caffeine/Pyrilamine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine or pale stools; fast heartbeat; nervousness or irritability; unusual tiredness; yellowing of the skin or eyes.

Acetaminophen/Dextromethorphan/Pseudoephedrine

Dizziness; excitability; headache; nausea; nervousness or anxiety; trouble sleeping; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dextromethorphan/Pseudoephedrine:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; yellowing of skin or eyes.

Acetaminophen/Chlorpheniramine/Dextromethorphan/Phenylephrine

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Acetaminophen/Chlorpheniramine/Dextromethorphan/Phenylephrine: Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Acetaminophen/Chlorpheniramine/Dextromethorphan/Phenylephrine:

Constipation; diarrhea; dizziness; drowsiness; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Chlorpheniramine/Dextromethorphan/Phenylephrine:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine; difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; vision changes; yellowing of skin or eyes.

Acetaminophen/Dextromethorphan/Phenylephrine

Dizziness; excitability; headache; nausea; nervousness or anxiety; trouble sleeping; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dextromethorphan/Phenylephrine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; yellowing of skin or eyes.

Acetaminophen/Codeine

Blurred vision; constipation; dizziness; drowsiness; exaggerated sense of well-being; feeling unwell or unhappy; flushing; lightheadedness; mental/mood changes; nausea; stomach pain; vision changes; vomiting.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Codeine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); change in the amount of urine; dark urine; difficulty breathing; slow/irregular breathing; slow/irregular heartbeat; stomach pain; yellowing of the skin or eyes.

Acetaminophen/Butalbital/Caffeine

Dizziness; drowsiness; intoxicated feeling; lightheadedness; nausea.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Butalbital/Caffeine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); confusion; seizures; severe drowsiness; shortness of breath; slurred speech; stomach pain; weakness.

Acetaminophen/Dextromethorphan/Doxylamine/Pseudoephedrine

Constipation; diarrhea; dizziness; drowsiness; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dextromethorphan/Doxylamine/Pseudoephedrine:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; trouble sleeping; vision changes; yellowing of skin or eyes.

Acetaminophen/Propoxyphene

Constipation; dizziness; drowsiness; headache; lightheadedness; nausea; stomach pain; vomiting.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Propoxyphene:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); change in amount of urine produced; dark urine; hallucinations; mental or mood changes; severe drowsiness or dizziness; severe or persistent stomach pain; severe or persistent vision changes; yellowing of the skin or eyes.

Acetaminophen/Brompheniramine/Pseudoephedrine

Dizziness; drowsiness; dry mouth, nose, or throat; headache; nausea; nervousness; trouble sleeping.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Brompheniramine/Pseudoephedrine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; dark urine or pale stools; difficulty urinating; excessive sweating; frequent urination; hallucinations; pounding in the chest; rapid pulse; severe nervousness; stomach pain; tremors; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen/Salicylamide/Phenyltoloxamine

Drowsiness; dry mouth, nose, or throat; heartburn; nausea; thickening of mucus in the nose and throat; upset stomach.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Salicylamide/Phenyltoloxamine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); bloody or black stools; confusion; dark urine or pale stools; decreased urination; diarrhea; difficulty swallowing; dizziness; hearing loss; hoarseness; persistent sore throat or other signs of infection; ringing in the ears; severe stomach pain; unusual bruising or bleeding; unusual tiredness; vomiting; yellowing of the skin or eyes.

Acetaminophen/Aspirin/Caffeine

Heartburn; nausea; upset stomach.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Aspirin/Caffeine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); black or bloody stools; confusion; dark urine or pale stools; fainting; hearing loss; ringing in the ears; severe stomach pain; unusual tiredness; vomiting blood; yellowing of the skin or eyes.

Acetaminophen/Dextromethorphan/Guaifenesin/Pseudoephedrine

Dizziness; excitability; headache; nausea; nervousness or anxiety; trouble sleeping; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dextromethorphan/Guaifenesin/Pseudoephedrine:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; yellowing of skin or eyes.

Acetaminophen/Aspirin/Caffeine/Salicylamide

Heartburn; nausea; upset stomach.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Aspirin/Caffeine/Salicylamide:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); black or bloody stools; confusion; dark urine or pale stools; diarrhea; dizziness; drowsiness; hearing loss; ringing in the ears; severe stomach pain; unusual tiredness; vomiting; yellowing of the skin or eyes.

Acetaminophen/Salicylamide/Phenyltoloxamine/Caffeine

Dizziness; drowsiness; dry mouth, nose, or throat; heartburn; nausea; thickening of mucus in the nose and throat; upset stomach.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Salicylamide/Phenyltoloxamine/Caffeine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); bloody or black stools; blurred vision or other vision changes; dark urine; decrease in the amount of urine produced; difficulty urinating; fainting; fast or irregular heartbeat; hearing loss; involuntary trembling; loss of coordination; pale stools; ringing in the ears; seizures; severe or persistent dizziness; severe stomach pain; trouble sleeping; unusual bruising or bleeding; unusual tiredness; vomiting; yellowing of the skin or eyes.

Acetaminophen/Dexchlorpheniramine/Pseudoephedrine

Dizziness; drowsiness; dry mouth, nose, or throat; headache; nausea; nervousness; trouble sleeping.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dexchlorpheniramine/Pseudoephedrine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; dark urine or pale stools; difficulty urinating; excessive sweating; frequent urination; hallucinations; pounding in the chest; rapid pulse; severe nervousness; stomach pain; tremors; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen/Phenyltoloxamine

Drowsiness; dry mouth, nose, or throat; heartburn; nausea; thickening of mucus in the nose and throat; upset stomach.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Phenyltoloxamine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); confusion; dark urine or pale stools; decreased urination; severe stomach pain; unusual bruising or bleeding; unusual tiredness; vomiting; yellowing of the skin or eyes.

Acetaminophen/Pamabrom/Pyrilamine

All medicines may cause side effects, but many people have no, or minor side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Acetaminophen/Pamabrom/Pyrilamine:

Drowsiness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Pamabrom/Pyrilamine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine or pale stools; severe or persistent stomach pain; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen/Oxycodone

Constipation; dizziness; drowsiness; flushing; lightheadedness; mental/mood changes; nausea; vision changes; vomiting.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Oxycodone:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); change in amount of urine; dark urine; slow or irregular heartbeat; slow or irregular breathing; stomach pain; yellowing of the skin or eyes.

Acetaminophen/Pseudoephedrine/Triprolidine

Constipation; diarrhea; dizziness; drowsiness; dry mouth, nose, or throat; excitability (especially in children); headache; loss of appetite; nausea; nervousness; restlessness; trouble sleeping; vomiting.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Pseudoephedrine/Triprolidine:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); blurred vision; chest pain; decreased coordination; difficulty urinating; fast or irregular heartbeat; fever; hallucinations; seizure; severe dizziness and drowsiness; severe nervousness, anxiety, or restlessness; stomach pain; tremors; unusual weakness; yellowing of the skin or eyes.

Acetaminophen

All medicines may cause side effects, but many people have no, or minor, side effects. When used in small doses, no COMMON side effects have been reported with Acetaminophen. Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine or pale stools; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen/Caffeine/Dihydrocodeine

Blurred vision; constipation; dizziness; drowsiness; exaggerated sense of well-being; feeling unwell or unhappy; flushing; lightheadedness; mental/mood changes; nausea; nervousness or anxiety; stomach pain; vision changes; vomiting.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Caffeine/Dihydrocodeine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); change in the amount of urine; dark urine; difficulty breathing; slow/irregular breathing; slow/irregular heartbeat; stomach pain; yellowing of the skin or eyes.

Acetaminophen/Dexbrompheniramine/Pseudoephedrine

Dizziness; drowsiness; dry mouth, nose, or throat; headache; nausea; nervousness; trouble sleeping.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dexbrompheniramine/Pseudoephedrine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; dark urine or pale stools; difficulty urinating; excessive sweating; frequent urination; hallucinations; pounding in the chest; rapid pulse; severe nervousness; stomach pain; tremors; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen/Hydrocodone

Blurred vision; constipation; difficulty breathing; dizziness; drowsiness; flushing; lightheadedness; mental/mood changes; nausea; vomiting.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Hydrocodone:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); anxiety; change in the amount of urine; change or loss in hearing; fear; interrupted breathing; mental or mood changes; unusual tiredness.

Acetaminophen/Butalbital/Caffeine/Codeine

Dizziness; drowsiness; intoxicated feeling; lightheadedness; nausea; stomach pain; vomiting.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Butalbital/Caffeine/Codeine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); confusion; fainting; fast heartbeat; mental or mood changes; red, swollen, blistered, or peeling skin; ringing in the ears; seizures; severe drowsiness; shortness of breath; slow or shallow breathing.

Acetaminophen/Diphenhydramine/Dextromethorphan/Pseudoephedrine

Constipation; diarrhea; dizziness; drowsiness; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Diphenhydramine/Dextromethorphan/Pseudoephedrine:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; trouble sleeping; vision changes; yellowing of skin or eyes.

Acetaminophen/Doxylamine/Pseudoephedrine

Constipation; diarrhea; dizziness; drowsiness; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Doxylamine/Pseudoephedrine:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; trouble sleeping; vision changes; yellowing of skin or eyes.

Acetaminophen/Caffeine/Magnesium Salicylate/Phenyltoloxamine

Anxiety; blurred vision; diarrhea; dizziness; drowsiness; dry mouth, nose, or throat; fast heartbeat; headache; heartburn; irritability; loss of appetite; nausea; nervousness; thickening of mucus in the nose and throat; trouble sleeping; upset stomach; vomiting.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Caffeine/Magnesium Salicylate/Phenyltoloxamine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); bloody or black stools; confusion; dark urine or pale stools; decreased coordination; decreased urination; difficulty swallowing; fainting; fever, chills, persistent sore throat, or other signs of infection; hearing loss; hoarseness; irregular heartbeat; muscle weakness; ringing in the ears; seizures; severe or persistent heartburn; severe, persistent, or recurring fast heartbeat; severe stomach pain; severe vomiting; shortness of breath; tremors; unusual bruising or bleeding; unusual tiredness; vomit that looks like coffee grounds; yellowing of the skin or eyes.

Acetaminophen/Chlorpheniramine/Codeine/Phenylephrine

Constipation; dizziness; drowsiness; dry mouth, throat, or nose; excitement; nausea; stomach upset; thickening or mucus in nose or throat.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Chlorpheniramine/Codeine/Phenylephrine:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating; fast or irregular heartbeat; flushing or redness of face; stomach pain; yellowing of the skin or eyes.

Acetaminophen/Pseudoephedrine

Constipation; diarrhea; dizziness; drowsiness; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Pseudoephedrine:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; mood or mental changes; seizures; severe dizziness, lightheadedness, or headache; severe drowsiness; stomach pain; tremor; vision changes; yellowing of skin or eyes.

Acetaminophen/Dextromethorphan/Guaifenesin/Phenylephrine

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Acetaminophen/Dextromethorphan/Guaifenesin/Phenylephrine: Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Acetaminophen/Dextromethorphan/Guaifenesin/Phenylephrine:

Dizziness; excitability; headache; nausea; nervousness or anxiety; trouble sleeping; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dextromethorphan/Guaifenesin/Phenylephrine:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine; difficulty urinating; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; yellowing of skin or eyes.

Acetaminophen/Dextromethorphan/Doxylamine

Constipation; diarrhea; dizziness; drowsiness; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dextromethorphan/Doxylamine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; trouble sleeping; vision changes; yellowing of skin or eyes.

Acetaminophen/Phenylephrine

Constipation; diarrhea; dizziness; drowsiness; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Phenylephrine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine; difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; mood or mental changes; seizures; severe dizziness, lightheadedness, or headache; severe drowsiness; stomach pain; tremor; vision changes; yellowing of skin or eyes.

Acetaminophen/Diphenhydramine/Pseudoephedrine

Constipation; diarrhea; dizziness; drowsiness; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Diphenhydramine/Pseudoephedrine:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; mood or mental changes; seizures; severe dizziness, lightheadedness, or headache; severe drowsiness; stomach pain; tremor; trouble sleeping; vision changes; yellowing of skin or eyes.

Acetaminophen/Dexbrompheniramine/Phenylephrine

Dizziness; drowsiness; dry mouth, nose, or throat; headache; nausea; nervousness; trouble sleeping.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dexbrompheniramine/Phenylephrine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; dark urine or pale stools; difficulty urinating; excessive sweating; fast or irregular heartbeat; frequent urination; hallucinations; pounding in the chest; rapid pulse; seizures; severe or persistent headache or dizziness; severe or persistent nervousness, restlessness, or trouble sleeping; stomach pain; tremors; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen and Aspirin

Heartburn; nausea; upset stomach.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen and Aspirin:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); black or bloody stools; confusion; dark urine or pale stools; diarrhea; dizziness; drowsiness; hearing loss; ringing in the ears; severe stomach pain; unusual fatigue; vomiting; yellowing of the skin or eyes.

Acetaminophen/Chlorpheniramine/Pseudoephedrine

Dizziness; drowsiness; dry mouth, nose, or throat; headache; nausea; nervousness; trouble sleeping.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Chlorpheniramine/Pseudoephedrine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; dark urine or pale stools; difficulty urinating; excessive sweating; frequent urination; hallucinations; pounding in the chest; rapid pulse; severe nervousness; stomach pain; tremors; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen/Caffeine

All medicines may cause side effects, but many people have no, or minor, side effects. Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Caffeine:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine or pale stools; unusual tiredness; yellowing of the skin or eyes.

Acetaminophen/Caffeine/Salicylamide

Anxiety or nervousness; dizziness; drowsiness; heartburn; nausea; upset stomach; vomiting.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Caffeine/Salicylamide:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); bloody or black stools; confusion; dark urine or pale stools; decreased urination; diarrhea; difficulty swallowing; dizziness; hearing loss; hoarseness; persistent sore throat or other signs of infection; ringing in the ears; severe or persistent vomiting; severe stomach pain; unusual bruising or bleeding; unusual tiredness; yellowing of the skin or eyes.

Acetaminophen/Diphenhydramine

Constipation; diarrhea; dizziness; drowsiness; dry mouth, nose, or throat; excitability; headache; loss of appetite; nausea; nervousness or anxiety; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Diphenhydramine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine or pale stools; difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, drowsiness, lightheadedness, or headache; severe or persistent loss of appetite; stomach pain; tremor; trouble sleeping; unusual fatigue; vision changes; yellowing of the skin or eyes.

Acetaminophen/Caffeine/Isometheptene

All medicines may cause side effects, but many people have no, or minor, side effects. If any of the following most COMMON side effects continue or become bothersome when using Acetaminophen/Caffeine/Isometheptene, check with your doctor: Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Acetaminophen/Caffeine/Isometheptene:

Temporary dizziness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Caffeine/Isometheptene:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine or pale stools; right-sided abdominal pain or tenderness; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen and Pamabrom

All medicines may cause side effects, but many people have no, or minor, side effects. When used in small doses, no COMMON side effects have been reported with Acetaminophen and Pamabrom. Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen and Pamabrom:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine or pale stools; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen/Diphenhydramine Capsules

Constipation; diarrhea; dizziness; drowsiness; dry mouth, nose, or throat; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Diphenhydramine Capsules:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine or pale stools; difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; trouble sleeping; unusual fatigue; vision changes; yellowing of the skin or eyes.

Acetaminophen/Dextromethorphan/Pseudoephedrine Capsules

Dizziness; excitability; headache; nausea; nervousness or anxiety; trouble sleeping; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dextromethorphan/Pseudoephedrine Capsules:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; yellowing of skin or eyes.

Acetaminophen/Dextromethorphan/Guaifenesin/Pseudoephedrine Capsules

Dizziness; excitability; headache; nausea; nervousness or anxiety; trouble sleeping; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dextromethorphan/Guaifenesin/Pseudoephedrine Capsules:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; yellowing of skin or eyes.

Acetaminophen/Hydrocodone Capsules

Blurred vision; constipation; dizziness; drowsiness; flushing; lightheadedness; nausea; vomiting.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Hydrocodone Capsules:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); anxiety; change in the amount of urine; fear; hearing change or loss; interrupted breathing; mental or mood changes; unusual tiredness.

Acetaminophen/Dextromethorphan/Pseudoephedrine Chewable Tablets

Dizziness; excitability; headache; nausea; nervousness or anxiety; trouble sleeping; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dextromethorphan/Pseudoephedrine Chewable Tablets:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; yellowing of skin or eyes.

Acetaminophen/Chlorpheniramine/Dextromethorphan/Pseudoephedrine Chewable Tablets

Constipation; diarrhea; dizziness; drowsiness; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Chlorpheniramine/Dextromethorphan/Pseudoephedrine Chewable Tablets:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; trouble sleeping; vision changes; yellowing of skin or eyes.

Acetaminophen Chewable Tablets

All medicines may cause side effects, but many people have no, or minor, side effects. When used in small doses, no COMMON side effects have been reported with Acetaminophen Chewable Tablets. Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen Chewable Tablets:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine or pale stools; reduced liver or kidney function; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen/Chlorpheniramine/Pseudoephedrine Chewable Tablets

Dizziness; drowsiness; dry mouth, nose, or throat; headache; nausea; nervousness; trouble sleeping.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Chlorpheniramine/Pseudoephedrine Chewable Tablets:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; dark urine or pale stools; difficulty urinating; excessive sweating; frequent urination; hallucinations; pounding in the chest; rapid pulse; severe nervousness; stomach pain; tremors; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen/Chlorpheniramine/Phenylephrine Controlled-Release Tablets

Dizziness; drowsiness; dry mouth, nose, or throat; headache; nausea; nervousness; trouble sleeping.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Chlorpheniramine/Phenylephrine Controlled-Release Tablets:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; dark urine or pale stools; difficulty urinating; hallucinations; high blood pressure; rapid pulse; severe nervousness; stomach pain; tremors; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen Controlled-Release Tablets

All medicines may cause side effects, but many people have no, or minor, side effects. When used in small doses, no COMMON side effects have been reported with Acetaminophen Controlled-Release Tablets. Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen Controlled-Release Tablets:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine or pale stools; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen/Phenyltoloxamine Controlled-Release Tablets

Drowsiness; dry mouth, nose, or throat; heartburn; nausea; thickening of mucus in the nose and throat; upset stomach.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Phenyltoloxamine Controlled-Release Tablets:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); confusion; dark urine or pale stools; decreased urination; severe stomach pain; unusual bruising or bleeding; unusual tiredness; vomiting; yellowing of the skin or eyes.

Acetaminophen/Dexbrompheniramine/Pseudoephedrine Controlled-Release Tablets

Dizziness; drowsiness; dry mouth, nose, or throat; headache; nausea; nervousness; trouble sleeping.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dexbrompheniramine/Pseudoephedrine Controlled-Release Tablets:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; dark urine or pale stools; difficulty urinating; excessive sweating; frequent urination; hallucinations; pounding in the chest; rapid pulse; severe nervousness; stomach pain; tremors; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen Dispersible Tablets

All medicines may cause side effects, but many people have no, or minor, side effects. When used in small doses, no COMMON side effects have been reported with Acetaminophen Dispersible Tablets. Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen Dispersible Tablets:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine or pale stools; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen/Phenylephrine Drops

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Acetaminophen/Phenylephrine Drops: Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Acetaminophen/Phenylephrine Drops:

Constipation; diarrhea; dizziness; excitability; headache; trouble sleeping; upset stomach.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Phenylephrine Drops:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine; difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; mood or mental changes; seizures; severe dizziness, lightheadedness, or headache; severe drowsiness; stomach pain; tremor; vision changes; yellowing of skin or eyes.

Acetaminophen Drops

All medicines may cause side effects, but many people have no, or minor, side effects. When used in small doses, no COMMON side effects have been reported with Acetaminophen Drops. Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen Drops:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine or pale stools; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen/Dextromethorphan/Phenylephrine Drops

Dizziness; excitability; headache; nausea; nervousness or anxiety; trouble sleeping; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dextromethorphan/Phenylephrine Drops:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; yellowing of skin or eyes.

Acetaminophen/Dextromethorphan/Pseudoephedrine Drops

Dizziness; excitability; headache; nausea; nervousness or anxiety; trouble sleeping; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dextromethorphan/Pseudoephedrine Drops:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; yellowing of skin or eyes.

Acetaminophen/Butalbital/Caffeine Elixir

Dizziness; drowsiness; intoxicated feeling; lightheadedness; nausea.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Butalbital/Caffeine Elixir:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); confusion; seizures; severe drowsiness; shortness of breath; slurred speech; stomach pain; weakness.

Acetaminophen Elixir

All medicines may cause side effects, but many people have no, or minor, side effects. When used in small doses, no COMMON side effects have been reported with Acetaminophen Elixir. Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen Elixir:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine or pale stools; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen Gel Syrup

All medicines may cause side effects, but many people have no, or minor, side effects. When used in small doses, no COMMON side effects have been reported with Acetaminophen Gel Syrup. Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen Gel Syrup:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine or pale stools; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen/Hydrocodone Liquid

Blurred vision; constipation; dizziness; drowsiness; flushing; light-headedness; nausea; vomiting.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Hydrocodone Liquid:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); anxiety; change in the amount of urine; fear; hearing change or loss; interrupted breathing; mental or mood changes; unusual tiredness.

Acetaminophen/Phenyltoloxamine Liquid

Drowsiness; dry mouth, nose, or throat; heartburn; nausea; thickening of mucus in the nose and throat; upset stomach.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Phenyltoloxamine Liquid:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); confusion; dark urine or pale stools; decreased urination; severe stomach pain; unusual bruising or bleeding; unusual tiredness; vomiting; yellowing of the skin or eyes.

Acetaminophen/Dextromethorphan/Phenylephrine Liquid

Dizziness; excitability; headache; nausea; nervousness or anxiety; trouble sleeping; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dextromethorphan/Phenylephrine Liquid:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine or pale stools; difficulty urinating; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; severe or persistent loss of appetite; severe or persistent nervousness, restlessness, or trouble sleeping; tremor; stomach pain; yellowing of skin or eyes.

Acetaminophen/Dextromethorphan/Guaifenesin/Pseudoephedrine Liquid

Dizziness; excitability; headache; nausea; nervousness or anxiety; trouble sleeping; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dextromethorphan/Guaifenesin/Pseudoephedrine Liquid:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; yellowing of skin or eyes.

Acetaminophen/Chlorpheniramine/Dextromethorphan/Pseudoephedrine Liquid

Constipation; diarrhea; dizziness; drowsiness; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Chlorpheniramine/Dextromethorphan/Pseudoephedrine Liquid:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; trouble sleeping; vision changes; yellowing of skin or eyes.

Acetaminophen/Dextromethorphan/Pseudoephedrine Liquid

Dizziness; excitability; headache; nausea; nervousness or anxiety; trouble sleeping; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dextromethorphan/Pseudoephedrine Liquid:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; yellowing of skin or eyes.

Acetaminophen/Chlorpheniramine/Pseudoephedrine Liquid

Dizziness; drowsiness; dry mouth, nose, or throat; headache; nausea; nervousness; trouble sleeping.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Chlorpheniramine/Pseudoephedrine Liquid:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; dark urine or pale stools; difficulty urinating; excessive sweating; frequent urination; hallucinations; pounding in the chest; rapid pulse; severe nervousness; stomach pain; tremors; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen/Dextromethorphan/Doxylamine Liquid

Constipation; diarrhea; dizziness; drowsiness; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dextromethorphan/Doxylamine Liquid:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; trouble sleeping; vision changes; yellowing of skin or eyes.

Acetaminophen/Dextromethorphan/Doxylamine/Pseudoephedrine Liquid

Constipation; diarrhea; dizziness; drowsiness; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dextromethorphan/Doxylamine/Pseudoephedrine Liquid:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; trouble sleeping; vision changes; yellowing of skin or eyes.

Acetaminophen/Dextromethorphan/Guaifenesin/Phenylephrine Liquid

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Acetaminophen/Dextromethorphan/Guaifenesin/Phenylephrine Liquid: Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Acetaminophen/Dextromethorphan/Guaifenesin/Phenylephrine Liquid:

Dizziness; drowsiness; excitability; headache; nausea; nervousness or anxiety; trouble sleeping.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dextromethorphan/Guaifenesin/Phenylephrine Liquid:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine; difficulty urinating; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; yellowing of skin or eyes.

Acetaminophen/Doxylamine/Dextromethorphan/Phenylephrine Liquid

Dizziness; drowsiness; dry mouth, nose, or throat; headache; nausea; nervousness; trouble sleeping.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Doxylamine/Dextromethorphan/Phenylephrine Liquid:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; dark urine; difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; mental or mood changes; pale stools; seizures; severe nervousness, drowsiness, or trouble sleeping; severe or persistent dizziness, lightheadedness, or headache; severe or persistent stomach pain, nausea, or vomiting; tremor; unusual fatigue; vision changes; yellowing of the skin or eyes.

Acetaminophen/Chlorpheniramine/Dextromethorphan Liquid

Constipation; diarrhea; dizziness; drowsiness; dry mouth, nose, or throat; excitability; headache; trouble sleeping; upset stomach.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Chlorpheniramine/Dextromethorphan Liquid:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine; difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; persistent blurred vision or other vision changes; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; yellowing of skin or eyes.

Acetaminophen/Diphenhydramine/Phenylephrine Liquid

Constipation; diarrhea; dizziness; drowsiness; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Diphenhydramine/Phenylephrine Liquid:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); confusion; dark urine; difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; mood or mental changes; pale stools; seizures; severe drowsiness; severe or persistent dizziness, nervousness, lightheadedness, or headache; severe or persistent trouble sleeping; stomach pain; tremor; vision changes; yellowing of the skin or eyes.

Acetaminophen and Aspirin Powder Pack

Heartburn; nausea; upset stomach.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen and Aspirin Powder Pack:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); black or bloody stools; confusion; dark urine or pale stools; diarrhea; dizziness; drowsiness; hearing loss; redness or swelling; ringing in the ears; severe stomach pain; unusual fatigue; vomiting that looks like coffee grounds; yellowing of the skin or eyes.

Acetaminophen/Phenylephrine Powder Packet

Diarrhea; dizziness; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Phenylephrine Powder Packet:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine or pale stools; fast or irregular heartbeat; hallucinations; mood or mental changes; seizures; severe dizziness, lightheadedness, or headache; severe drowsiness; severe or persistent loss of appetite; severe or persistent nervousness, restlessness, or trouble sleeping; stomach pain; tremor; vision changes; yellowing of skin or eyes.

Acetaminophen/Chlorpheniramine/Dextromethorphan/Pseudoephedrine Powder Packet

Constipation; diarrhea; dizziness; drowsiness; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Chlorpheniramine/Dextromethorphan/Pseudoephedrine Powder Packet:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; trouble sleeping; vision changes; yellowing of skin or eyes.

Acetaminophen/Dextromethorphan/Pseudoephedrine Powder Packet

Dizziness; excitability; headache; nausea; nervousness or anxiety; trouble sleeping; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dextromethorphan/Pseudoephedrine Powder Packet:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; yellowing of skin or eyes.

Acetaminophen/Diphenhydramine/Phenylephrine Powder Packet

Constipation; diarrhea; dizziness; drowsiness; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Diphenhydramine/Phenylephrine Powder Packet:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine; difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; mood or mental changes; pale stools; seizures; severe drowsiness; severe or persistent dizziness, nervousness, lightheadedness, or headache; severe or persistent trouble sleeping; stomach pain; tremor; vision changes; yellowing of skin or eyes.

Acetaminophen/Aspirin/Caffeine Powder Packet

Heartburn; nausea; upset stomach.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Aspirin/Caffeine Powder Packet:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); black or bloody stools; confusion; dark urine or pale stools; diarrhea; dizziness; drowsiness; hearing loss; ringing in the ears; severe stomach pain; unusual tiredness; vomiting; yellowing of the skin or eyes.

Acetaminophen/Pheniramine/Phenylephrine Powder Packets

Dizziness; drowsiness; dry mouth, nose, or throat; excitability; headache; nausea; nervousness; trouble sleeping.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Pheniramine/Phenylephrine Powder Packets:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; dark urine or pale stools; difficulty urinating; fast or irregular heartbeat; hallucinations; rapid pulse; seizures; severe or persistent nervousness, dizziness, headache, or trouble sleeping; stomach pain; tremors; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen/Chlorpheniramine/Phenylephrine Powder Packets

Dizziness; drowsiness; dry mouth, nose, or throat; excitability; headache; nausea; nervousness; trouble sleeping.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Chlorpheniramine/Phenylephrine Powder Packets:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; dark urine or pale stools; difficulty urinating; fast or irregular heartbeat; hallucinations; high blood pressure; rapid pulse; seizures; severe nervousness, restlessness, or trouble sleeping; stomach pain; tremors; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen/Guaifenesin Powder Packets

All medicines may cause side effects, but many people have no, or minor, side effects. When used in small doses, no COMMON side effects have been reported with Acetaminophen/Guaifenesin Powder Packets. Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Guaifenesin Powder Packets:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine or pale stools; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen/Oxycodone Solution

Constipation; dizziness; drowsiness; flushing; lightheadedness; mental/mood changes; nausea; vision changes; vomiting.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Oxycodone Solution:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); change in amount of urine; dark urine; slow or irregular heartbeat; slow or irregular breathing; stomach pain; yellowing of the skin or eyes.

Acetaminophen/Codeine Solution

Blurred vision; constipation; dizziness; drowsiness; exaggerated sense of well-being; feeling unwell or unhappy; flushing; lightheadedness; mental/mood changes; nausea; stomach pain; vision changes; vomiting.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Codeine Solution:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); change in the amount of urine; dark urine; difficulty breathing; slow/irregular breathing; slow/irregular heartbeat; stomach pain; yellowing of the skin or eyes.

Acetaminophen Suppositories

All medicines may cause side effects, but many people have no, or minor, side effects. When used in small doses, no COMMON side effects have been reported with Acetaminophen Suppositories. Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen Suppositories:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine or pale stools; stomach pain; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen Suspension

All medicines may cause side effects, but many people have no, or minor, side effects. When used in small doses, no COMMON side effects have been reported with Acetaminophen Suspension. Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen Suspension:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine or pale stools; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen/Diphenhydramine/Phenylephrine Suspension

Constipation; diarrhea; dizziness; drowsiness; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Diphenhydramine/Phenylephrine Suspension:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine; difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; mood or mental changes; pale stools; seizures; severe drowsiness; severe or persistent dizziness, nervousness, lightheadedness, or headache; severe or persistent trouble sleeping; stomach pain; tremor; vision changes; yellowing of skin or eyes.

Acetaminophen/Codeine Suspension

Blurred vision; constipation; dizziness; drowsiness; exaggerated sense of well-being; feeling unwell or unhappy; flushing; lightheadedness; mental/mood changes; nausea; stomach pain; vision changes; vomiting.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Codeine Suspension:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); change in the amount of urine; dark urine; difficulty breathing; slow/irregular breathing; slow/irregular heartbeat; stomach pain; yellowing of the skin or eyes.

Acetaminophen/Chlorpheniramine/Dextromethorphan/Phenylephrine Suspension

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Acetaminophen/Chlorpheniramine/Dextromethorphan/Phenylephrine Suspension: Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Acetaminophen/Chlorpheniramine/Dextromethorphan/Phenylephrine Suspension:

Constipation; diarrhea; dizziness; drowsiness; excitability; headache; trouble sleeping; upset stomach.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Chlorpheniramine/Dextromethorphan/Phenylephrine Suspension:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine; difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; vision changes; yellowing of skin or eyes.

Acetaminophen/Diphenhydramine/Pseudoephedrine Suspension

Constipation; diarrhea; dizziness; drowsiness; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Diphenhydramine/Pseudoephedrine Suspension:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; mood or mental changes; seizures; severe dizziness, lightheadedness, or headache; severe drowsiness; stomach pain; tremor; trouble sleeping; vision changes; yellowing of skin or eyes.

Acetaminophen/Chlorpheniramine/Dextromethorphan Suspension

Constipation; diarrhea; dizziness; drowsiness; excitability; headache; trouble sleeping; upset stomach.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Chlorpheniramine/Dextromethorphan Suspension:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine; difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; vision changes; yellowing of skin or eyes.

Acetaminophen Suspension Drops

All medicines may cause side effects, but many people have no, or minor, side effects. When used in small doses, no COMMON side effects have been reported with Acetaminophen Suspension Drops. Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen Suspension Drops:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine or pale stools; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen/Chlorpheniramine/Phenylephrine/Phenyltoloxamine Sustained-Release Tablets

Dizziness; drowsiness; dry mouth, nose, or throat; headache; nausea; nervousness; trouble sleeping.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Chlorpheniramine/Phenylephrine/Phenyltoloxamine Sustained-Release Tablets:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; dark urine or pale stools; difficulty urinating; hallucinations; high blood pressure; rapid pulse; severe nervousness; stomach pain; tremors; unusual fatigue; yellowing of the skin or eyes.

Acetaminophen/Dextromethorphan Syrup

Dizziness; drowsiness; nausea.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dextromethorphan Syrup:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); dark urine; severe or persistent stomach pain; severe or persistent tiredness; yellowing of the skin or eyes.

Acetaminophen/Dextromethorphan/Phenylephrine/Pyrilamine Syrup

Constipation; diarrhea; dizziness; drowsiness; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur when using Acetaminophen/Dextromethorphan/Phenylephrine/Pyrilamine Syrup:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; trouble sleeping; vision changes; yellowing of skin or eyes.

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Side Effects by Body System

General

In general, acetaminophen is well-tolerated when administered in therapeutic doses.

Hepatic

Hepatic side effects including severe and sometimes fatal dose dependent hepatitis have been reported in alcoholic patients. Hepatotoxicity has been increased during fasting. Several cases of hepatotoxicity from chronic acetaminophen therapy at therapeutic doses have also been reported despite a lack of risk factors for toxicity.

Alcoholic patients may develop hepatotoxicity after even modest doses of acetaminophen. In healthy patients, approximately 15 grams of acetaminophen is necessary to deplete liver glutathione stores by 70% in a 70 kg person. However, hepatotoxicity has been reported following smaller doses. Glutathione concentrations may be repleted by the antidote N-acetylcysteine. One case report has suggested that hypothermia may also be beneficial in decreasing liver damage during overdose.

In a recent retrospective study of 306 patients admitted for acetaminophen overdose, 6.9% had severe liver injury but all recovered. None of the 306 patients died.

A 19-year-old female developed hepatotoxicity, reactive plasmacytosis and agranulocytosis followed by a leukemoid reaction after acute acetaminophen toxicity.

Gastrointestinal

One study has suggested that acetaminophen may precipitate acute biliary pain and cholestasis. The mechanism of this effect may be related to inhibition of prostaglandin and alterations in the regulation of the sphincter of Oddi.

Gastrointestinal side effects are rare except in alcoholics and after overdose. Cases of acute pancreatitis have been reported rarely.

Renal

Renal side effects are rare and have included acute renal failure, acute tubular necrosis, and interstitial nephritis. Adverse renal effects are most often observed after overdose, after chronic abuse (often with multiple analgesics), or in association with acetaminophen-related hepatotoxicity.

Acute tubular necrosis usually occurs in conjunction with liver failure, but has been observed as an isolated finding in rare cases. A possible increase in the risk of renal cell carcinoma has been associated with chronic acetaminophen use as well.

One case-control study of patients with end-stage renal disease suggested that long term consumption of acetaminophen may significantly increase the risk of end-stage renal disease particularly in patients taking more than two pills per day.

However, a recent cohort study of analgesia use of initially healthy men concluded that moderate use of analgesics including acetaminophen was not associated with increased risk of renal disease.

Hypersensitivity

Hypersensitivity side effects including anaphylaxis and fixed drug eruptions have been reported rarely in association with acetaminophen use.

Hematologic

Hematologic side effects including rare cases of thrombocytopenia associated with acetaminophen have been reported. Acute thrombocytopenia has also been reported as having been caused by sensitivity to acetaminophen glucuronide, the major metabolite of acetaminophen. Methemoglobinemia with resulting cyanosis has been observed in the setting of acute overdose.

Dermatologic

Dermatologic side effects including erythematous skin rashes associated with acetaminophen have been reported, but are rare. Acetaminophen associated bullous erythema and purpura fulminans have been reported. One case of toxic epidermal necrolysis associated with acetaminophen administered to a pediatric patient has been reported.

Respiratory

Respiratory side effects including a case of acetaminophen-induced eosinophilic pneumonia have been reported.

Cardiovascular

Cardiovascular side effects including two cases of hypotension have been reported following the administration of acetaminophen.

Two cases hypotension have been reported following the administration of acetaminophen. Both patients experienced significant decreases in blood pressure. One of the two patients required pressor agents to maintain adequate mean arterial pressures. Neither episode was associated with symptoms of anaphylaxis. Neither patient was rechallenged after resolution of the initial episode.

Metabolic

Metabolic side effects including metabolic acidosis have been reported following a massive overdose of acetaminophen.

In the case of metabolic acidosis, causality is uncertain as more than one drug was ingested. The case of metabolic acidosis followed the ingestion of 75 grams of acetaminophen, 1.95 grams of aspirin, and a small amount of a liquid household cleaner. The patient also had a history of seizures which the authors reported may have contributed to an increased lactate level indicative of metabolic acidosis.

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