Chlorpheniramine
Antihistamine
First-generation sedating antihistamine, widely used in Vietnam.
Generic name: Chlorpheniramine maleate
Brand names: Clorpheniramin, Histamine, Allergine
Dosage
Adults: 4 mg every 4–6 hours, max 24 mg/day. Children 6–12: 2 mg every 4–6 hours.
Side effects
Drowsiness, dry mouth, blurred vision, urinary retention, constipation.
Contraindications
Narrow-angle glaucoma, prostatic hypertrophy, neonates, third trimester of pregnancy.
Description
Chlorpheniramine is a low-cost first-line treatment for allergic rhinitis, common cold symptoms, and acute urticaria. Its sedating effect is sometimes desired for night-time use.