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/ˌdʌɪ.fɛnˈhʌɪ.dɹəm.iːn/ · noun
(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)..
Diphenhydramine is a convenient and cheap antihistamine for use, but there are other drugs that do not make the user tired.
Use diphenhydramine when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Diphenhydramine means (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)..
Common synonyms include ZzzQuil, Benadryl.
The opposite depends on the specific sense.
Diphenhydramine is a convenient and cheap antihistamine for use, but there are other drugs that do not make the user tired.
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