Perhaps everyone knows this already, but just in case........................
I asked DH to stop at the drug store on the way home to pick up some Benedryl for my whippie Rickie. Knowing that increasingly every OTC med has variants, I asked him to get the original, most basic one.
He called me - there were at least 3 variants, the most promising sounding one of which was Benedryl - Allergy. I asked him to take all 3 to the pharmacist to confirm, and I'm glad he did.
Turns out the "Sinus and Headache" and whatever the third one was, contain Tylenol!!!
Benedryl - Allergy contains an antihistamine (no Tylenol) and is the right one.