How It Works Each generic Fioricet contains 3 main components which are acetaminophen (300mg), butalbital (50mg), and caffeine (40mg). Acetaminophen (300mg) - Acetaminophen is an analgesic that works as a pain reliever and fever reducer. It prevents certain chemical production in the brain and stops the pain signal reach your brain. Thus it helps you to feel much less or no p... https://orderemeds.com/genericfioricet