What is acetaminophen and butalbital? Acetaminophen is a pain reliever and a fever reducer. Butalbital is in a class of drugs called barbiturates that slow down your central nervous system (brain and nerve impulses) causing relaxation. The combination, acetaminophen and butalbital, is used to treat tension (or muscle contraction) headaches. The PDR reference is here. acetaminophen and caffeine

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... ACETAMINOPHEN; BUTALBITAL (Sedapap® and others) is a combination product used to treat certain types of headaches. Federal law prohibits the transfer of acetaminophen; butalbital to any person other than the patient for whom it was prescribed. Do not share this medicine with any one else. Generic acetaminophen; butalbital tablets and capsules are available. ...
Drug Digest - more...

Butalbital Systematic (IUPAC) name 5-(2-methylpropyl)-5-(2-propen ...
Wikipedia - [full article]

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