A member asked:

Is it considered an adverse effect if my tylenol (acetaminophen) pm kept me awake most of the night?

A doctor has provided 1 answer

Yes: Sometimes people have a opposite effect to the typical effects. This is not uncommon. Tylenol (acetaminophen) pm has tylenol (acetaminophen) plus benadryl. Benadryl (diphenhydramine) is an antihistamine that is usually sedating. Some people have the opposite experience and it keeps them awake.

Answered 3/4/2015

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Related Questions

A member asked:

Ok to take 2 tylenol (acetaminophen) pm's every night?

A doctor has provided 1 answer