What is Headache Relief PM (acetaminophen and diphenhydramine)?
Acetaminophen is a pain reliever and a fever reducer. Diphenhydramine is an antihistamine. It blocks the effects of the naturally occurring chemical histamine in the body. Diphenhydramine prevents sneezing; itchy, watery eyes and nose; and other symptoms of allergies and hay fever. The combination of acetaminophen and diphenhydramine is used to treat runny nose, sneezing, watery eyes, and pain or fever caused by allergies, the common cold, or the flu. This medication is also used to treat night time pain and help you sleep. Acetaminophen and diphenhydramine may also be used for other purposes not listed in this medication guide.