What is acetaminophen?
Acetaminophen (Tylenol®) is a non-prescription pain reliever and fever reducer. It is one of the most commonly used non-prescription medications. Compared to other non-prescription pain relievers, it is less likely to cause ulcers and to interact with other medications. However, it may be more likely to cause liver damage, especially when taken at very high doses or in people who already have liver damage.