I'm not sure what you took, but plain Tylenol is paracetamol (acetaminophen). It sounds like you may have taken a Tylenol-branded compound medication that adde

I'm not sure what you took, but plain Tylenol is paracetamol (acetaminophen). It sounds like you may have taken a Tylenol-branded compound medication that added an antihistamine or something like that (there are several acetaminophen-plus over-the-counter medications available).