Aspirin is a pain reliever, as well as an anti-inflammatory and a fever reducer.
Butalbital is a barbiturate. It relaxes muscle contractions involved in a tension headache.
Caffeine is a central nervous system stimulant. It relaxes muscle contractions in blood vessels to improve blood flow.
Butalbital Compound is a combination medicine used to treat tension headaches.  Butalbital Compound is not for treating headaches that come and go.
Butalbital Compound may also be used for purposes not those listed in this medication guide.
