Which Nyquil?: at any rate all Nyquils contain an antihistamine, so you don't want to combine them with benadryl, (diphenhydramine) unless you have got a really severe allergic reaction. Combination would cause more side effects as drowsiness, so be careful, good luck
Answered 11/22/2020
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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