Butalbital - Axocet, 5-allyl-5-isobutylbarbituric acid, is a barbiturate with an intermediate duration of action.

Butalbital, 5-allyl-5-isobutylbarbituric acid, is a barbiturate with an intermediate duration of action. It has the same chemical formula as talbutal but a different structure. Butalbital is often combined with other medications, such as paracetamol(acetaminophen) or aspirin, and is commonly prescribed for the treatment of pain and headache. The various formulations combined with codeine are FDA approved for the treatment of tension headaches.

Combinations include:

butalbital and paracetamol(acetaminophen) (trade names: Axocet, Bucet, Bupap, Cephadyn, Dolgic, Phrenilin, Phrenilin Forte, Sedapap)
butalbital, paracetamol(acetaminophen, and caffeine (trade names: Fioricet, Esgic, Esgic-Plus)
butalbital and aspirin (trade name: Axotal)
butalbital, aspirin, and caffeine (trade names Fiorinal, Fiormor, Fiortal, Fortabs, Laniroif)
butalbital, paracetamol(acetaminophen), caffeine, and codeine phosphate (Fioricet #3 with Codeine)
butalbital, aspirin, caffeine, and codeine phosphate (trade name: Fiorinal #3 with Codeine)