Acetaminophen is a pain reliever and fever reducer. Butalbital is in a group of drugs called barbiturates. It relaxes muscle contractions involved in a tension headache. The combination of acetaminophen and butalbital is used to treat tension headaches. This medicine is not for treating headaches that come and go. Acetaminophen and butalbital may also be used for purposes not listed in this medication guide.
Bupap is a combination of butalbital and acetaminophen. Butalbital, a sedative that induces sleep and relaxation, comes from the group of drug called barbiturates. It loosens up the muscle contractions that cause headaches. On the other hand, acetaminophen is a fever reducer and a pain reliever. Both substances help treat migraines and tension headaches.