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ChlorpheniramineOver the counter
Pronounced klor-fen-EER-ah-meen
Brand names: Chlor-Trimeton
Type: Antihistamine (sedating) · All Allergy Medicines
What Chlorpheniramine is used for
- Allergy symptoms
- Cold symptoms, in combination products
Common side effects
- Drowsiness
- Dry mouth
- Blurred vision
- Difficulty urinating
- Constipation
Important cautions
- Sedating and confusing in older adults, in whom it is generally best avoided
- Many combination cold products contain antihistamines — check labels to avoid doubling up
How it comes
Tablets, extended-release tablets, liquid. This guide lists forms only — it never lists strengths or doses.
Related medicines — Allergy Medicines
Please note: This page is a patient-education summary, not medical advice, and it deliberately contains no doses. Medicines affect everyone differently — always follow your own prescription and talk to your doctor or pharmacist before starting, stopping or changing any medicine.