diphenhydramine

English

Chemical structure of diphenhydramine

Etymology

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

Pronunciation

(Received Pronunciation) IPA^(key): /ˌdʌɪ.fɛnˈhʌɪ.dɹəm.iːn/
(General American) IPA^(key): /ˌdaɪˌfɛnˈhaɪ.dɹəˌmiːn/

Noun

diphenhydramine (countable and uncountable, plural diphenhydramines)

(pharmacology) 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).
Synonym: (brand name) ZzzQuil

Diphenhydramine is a convenient and cheap antihistamine for use, but there are other drugs that do not make the user tired.

Translations

antihistamine and sedative drug

Chinese:
Mandarin: 苯海拉明 (běnhǎilāmíng)
Czech: difenhydramin m

References

“diphenhydramine”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.
“diphenhydramine”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.

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