English Explanatory Dictionary

diphenhydramine

English dictionary entry

Meanings

noun
  1. An antihistamine and anticholinergic drug that blocks the effect of histamine at H₁ receptor sites, relieving allergy symptoms. It also reduces smooth muscle contraction, increases heart rate, and sedates the user by blocking muscarinic acetylcholine receptors (mAChRs).

Pronunciation

/ˌdʌɪ.fɛnˈhʌɪ.dɹəm.iːn/ /ˌdaɪˌfɛnˈhaɪ.dɹəˌmiːn/ LL-Q1860 (eng)-Naomi Persephone Amethyst (NaomiAmethyst)-diphenhydramine.wav

Word forms

diphenhydramine diphenhydramines

Etymology

From diphen(yl) + (benz)hydr(yl) + -amine.

Synonyms

ZzzQuil Benadryl
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