Butalbital acetaminophen caffeine tabs, or tablets, are pills that contain a combination of drugs used to relieve the pain of tension headaches. Butalbital acetaminophen caffeine tabs contain specific amounts of the barbituate drug butalbital, the pain-reliever acetaminophen, and the stimulant caffeine. Butalbital acetaminophen caffeine tablets are available under the brand names Alagesic, Dolgic, Fioricet, Zebutal, and more. Butalbital acetaminophen caffeine tabs may be habit-forming due to the butalbital, so they are generally only prescribed for short-term use. Side effects of butalbital acetaminophen caffeine tabs can include affected mental and physical function, and this medication can cause problems if taken with alcohol.