One pill of Fioricet should be taken every four hours. Never take more than six capsules in a day. You should try to limit yourself to once a week at most. Both capsules and tablets are available for oral administration of Fioricet. There is 50mg of butalbital, 300mg of acetaminophen, and 50mg of caffeine in the formulation (40 mg).One pill of Fioricet should be taken every four hours. Never take more than six capsules in a day. You should try to limit yourself to once a week at most. Both capsules and tablets are available for oral administration of Fioricet. There is 50mg of butalbital, 300mg of acetaminophen, and 50mg of caffeine in the formulation (40 mg).One pill of Fioricet should be taken every four hours. Never take more than six capsules in a day. You should try to limit yourself to once a week at most. Both capsules and tablets are available for oral administration of Fioricet. There is 50mg of butalbital, 300mg of acetaminophen, and 50mg of caffeine in the formulation (40 mg).One pill of Fioricet should be taken every four hours. Never take more than six capsules in a day. You should try to limit yourself to once a week at most. Both capsules and tablets are available for oral administration of Fioricet. There is 50mg of butalbital, 300mg of acetaminophen, and 50mg of caffeine in the formulation (40 mg).