NalDex Side Effects
Generic Name: dexchlorpheniramine / phenylephrine
Note: This page contains side effects data for the generic drug dexchlorpheniramine / phenylephrine. It is possible that some of the dosage forms included below may not apply to the brand name NalDex.
For the Consumer
Applies to dexchlorpheniramine / phenylephrine: tablets
Check with your doctor if any of these most COMMON side effects persist or become bothersome:
Seek medical attention right away if any of these SEVERE side effects occur while taking dexchlorpheniramine / phenylephrine:
Constipation; diarrhea; dizziness; drowsiness; dry mouth; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); blurred vision or other vision changes; difficulty urinating or inability to urinate; fast or irregular heartbeat; fever, chills, or persistent sore throat; hallucinations; mood or mental changes; persistent trouble sleeping; restlessness; seizures; severe dizziness, light-headedness, or headache; severe drowsiness; tremor.
For Healthcare Professionals
Applies to dexchlorpheniramine / phenylephrine: oral tablet, oral tablet extended release
Gastrointestinal side effects have included nausea, dry mouth, anorexia, and heartburn.[Ref]
Nervous system side effects have included headache, dizziness, mild sedation, tremor, weakness, insomnia, drowsiness, restlessness, convulsions, central nervous system depression, and nervousness.[Ref]
Genitourinary side effects have included dysuria.[Ref]
Psychiatric side effects have included fear, anxiety, and tenseness.[Ref]
Cardiovascular side effects have included pallor, tachycardia, palpitations, arrhythmias, and cardiovascular collapse with hypotension.[Ref]
Respiratory side effects have included respiratory difficulty.[Ref]
Dermatologic side effects have included very rare reports of dermatitis.[Ref]
Ocular side effects have included blurring of vision.[Ref]
1. "Product Information. RhinaHist (dexchlorpheniramine-phenylephrine)." ProEthic Laboratories LLC, Montgomery, AL.
It is possible that some side effects of NalDex may not have been reported. These can be reported to the FDA here. Always consult a healthcare professional for medical advice.
More about NalDex (dexchlorpheniramine / phenylephrine)
- Other brands: RhinaHist
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