Robitussin Cough & Allergy Side Effects
Generic Name: chlorpheniramine / dextromethorphan / phenylephrine
Note: This page contains side effects data for the generic drug chlorpheniramine / dextromethorphan / phenylephrine. It is possible that some of the dosage forms included below may not apply to the brand name Robitussin Cough & Allergy.
For the Consumer
Applies to chlorpheniramine / dextromethorphan / phenylephrine: chewable tablets, suspension, 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 chlorpheniramine / dextromethorphan / phenylephrine:
Constipation; diarrhea; dizziness; drowsiness; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.
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; tremor; trouble sleeping; vision changes.
For Healthcare Professionals
Applies to chlorpheniramine / dextromethorphan / phenylephrine: oral drops, oral liquid, oral syrup, oral tablet effervescent, oral tablet extended release
Gastrointestinal side effects have included vomiting, diarrhea, dry mouth, nausea, anorexia, heartburn, and GI disturbance.[Ref]
Nervous system side effects have included sedation, drowsiness, dizziness, nervousness, headache, convulsions, central nervous system stimulation, hallucinations, tremors, and insomnia.[Ref]
Cardiovascular side effects have included cardiac arrhythmias, increased heart rate, and increased blood pressure.[Ref]
General side effects have included weakness and pallor.[Ref]
Genitourinary side effects have included polyuria and dysuria. Urinary retention may occur in patients with prostatic hypertrophy.[Ref]
Respiratory side effects have included respiratory difficulties.[Ref]
Ocular side effects have included diplopia.[Ref]
1. "Product Information. Rondec-DM (chlorpheniramine/DM/phenylephrine)." Alliant Pharmaceuticals Inc, Alpharetta, GA.
It is possible that some side effects of Robitussin Cough & Allergy may not have been reported. These can be reported to the FDA here. Always consult a healthcare professional for medical advice.
More about Robitussin Cough & Allergy (chlorpheniramine / dextromethorphan / phenylephrine)
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- Drug class: upper respiratory combinations