Diphenhydramine Overview

Diphenhydramine hydrochloride is an over-the-counter antihistamine, antiemetic, sedative and hypnotic. It may also be used for the treatment of extrapyramidal side effects of typical antipsychotics. It is a member of the ethanolamine class of antihistaminergic agents. Diphenhydramine is an anticholinergic, possessing 58 per cent of the anti-muscarinic power of atropine and was discovered during the search for synthetic alternatives to scopolamine which would be easier to work with. Diphenhydramine was...