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.
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.
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.
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