Fioricet is a combination medication consisting of three active ingredients: acetaminophen (a pain reliever and fever reducer), butalbital (a barbiturate that relaxes muscle contractions), and caffeine (which helps to enhance the effects of acetaminophen). It is primarily prescribed for the treatment of tension headaches.

Fioricet works by reducing the intensity of pain signals in the brain and relaxing muscle contractions in the head and neck. It is available in tablet and capsule forms and is typically taken every 4 to 6 hours as needed for headache relief.