| diphenhydramine | <drug> This antihistamine medication is used to treat allergies (hay fever, rashes, etc.) and postoperative nausea and vomiting. It can cause sleepiness and generally acts as a sedative. (09 Oct 1997) |
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| diphenhydramine hydrochloride | 2-(Diphenylmethoxy)-N,N-dimethylethylamine hydrochloride;an antihistaminic with anticholinergic and sedative properties. (05 Mar 2000) |