Treating tension headaches. It may also be used for other conditions as determined by your doctor.
How these medicines work is not completely understood. Aspirin reduces pain and inflammation. Caffeine may work by constricting blood vessels that may cause headaches. Butalbital has a depressant effect that reduces anxiety and causes relaxation.
Farbital and Fiorinal
Dizziness; drowsiness; gas; lightheadedness; nausea; vomiting.
Seek medical attention right away if any of these SEVERE side effects occur while taking aspirin / butalbital / caffeine:
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); black or bloody stools; confusion; fast heartbeat; red, swollen, or blistered skin; stomach pain; unusual bruising or bleeding.
(oral tablet, oral capsule)