<unk>  is an analgesic that is FDA approved for the treatment of tension and vascular headaches. There is a Black Box Warning for this drug as shown here.  Common adverse reactions include hepatotoxicity.
Isometheptene, caffeine and acetaminophen
Isometheptene mucate, dichloralphenazone and acetaminophen
Ergotamine and caffeine 
Diphenoxylate hydrochloride and atropine sulfate
Methenamine and sodium salicylate
Hydrocodone bitartrate and Homatropine methylbromide
Hydrocodone bitartrate and acetaminophen
Acetaminophen and Oxycodone