diphenhydramine
English edit
Etymology edit
From diphen(yl) + (benz)hydr(yl) + -amine.
Pronunciation edit
- (Received Pronunciation) IPA(key): /ˌdʌɪ.fɛnˈhʌɪ.dɹəm.iːn/
- (General American) IPA(key): /ˌdaɪˌfɛnˈhaɪ.dɹəˌmiːn/
Noun edit
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 edit
antihistamine and sedative drug
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References edit
- “diphenhydramine”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.
- “diphenhydramine”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.