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Medigesic description. Butalbital and acetaminophen (byoo-TAL-bi-tal and a-seat-a-MIN-oh-fen) combination is a pain reliever and relaxant. It is used to treat tension headaches. Butalbital belongs to the group of medicines called barbiturates (bar-BI-tyoo-rates) . Barbiturates act in the central nervous system (CNS) to produce their effects. When you take butalbital for a long time, your body may get used to it so that larger amounts are needed to produce the same effects. This is called tolerance to the medicine. Also, butalbital may become habit-forming (causing mental or physical dependence) when it is used for a long time or in large doses. Physical dependence may lead to withdrawal side effects when you stop taking the medicine. In patients who get headaches, the first symptom of withdrawal may be new (rebound) headaches. Some butalbital and acetaminophen combinations also contain caffeine (KAF-een) . Caffeine may help to relieve headaches. However, caffeine can also cause physical dependence when it is used for a long time. This may lead to withdrawal (rebound) headaches when you stop taking it. Butalbital and acetaminophen combination may also be used for other kinds of headaches or other kinds of pain as determined by your doctor. Why prescribed Medigesic. Medigesic of drugs is used to relieve tension headaches. Medigesic is sometimes prescribed for other uses; ask your doctor or pharmacist for more information. How used Medigesic. The combination of acetaminophen, butalbital, and caffeine comes as a capsule and tablet to take by mouth. It usually is taken every 4 hours as needed. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take acetaminophen, butalbital, and caffeine exactly as directed. Do not take more than six tablets or capsules in 1 day. If you think that you need more to relieve your symptoms, call your doctor. Medigesic can be habit-forming. Do not take a larger dose, take it more often, or for a longer period than your doctor tells you to. Some brand names: - Femcet - Fioricet - Isocet - Medigesic - Pacaps - Pharmagesic - Phrenilin - Phrenilin Forte - Repan - Sedapap - Tencet |