1. (noun) a medicine used to treat allergies and hypersensitive reactions and colds; works by counteracting the effects of histamine on a receptor site

• actifed
• antivert
• meclizine
• meclizine hydrochloride
• benadryl
• diphenhydramine
• brompheniramine maleate
• dimetane
• chlor-trimeton
• chlorpheniramine maleate
• coricidin
• cyproheptadine
• periactin
• dimenhydrinate
• dramamine
• dimetapp
• methapyrilene
• phenergan
• promethazine
• pheniramine
• phenyltoloxamine
• pyrilamine

1. (noun) a medicine used to treat allergies and hypersensitive reactions and colds; works by counteracting the effects of histamine on a receptor site

• medicament
• medication
• medicinal drug
• medicine