Fioricet is a mixture of 50 mg of butalbital, 40 mg of caffeine, and 300mg of acetaminophen per dose and belongs to the Barbiturate medication class. This combination of medicine got approved for medical use in the United States (U.S). Being A scheduled III item, it is available only with a proper prescription from a doctor. You can purchase the medicine from a pharmacy shop near you, but you can also buy Fioricet 40mg online if you want the best deals on the purchase.