5 Tricks The Competition Knows, But You don’t Metabolism and Excretion: Butalbital primarily eliminated by kidneys as unchanged drug or metabolites (59-88% of dose); acetaminophen and caffeine primarily metabolized by liver. Fioricet and Esgic are model title medicine made from a combination of acetaminophen (325 mg), butalbital (a barbiturate, 50 mg), and caffeine (40 mg). Also important when looking on the Fioricet dosage information are the potential interactions. There are not any recognized drug interactions between fioricet and Depo Provera. It’s true that Oxycodone and Hydrocodone are comparable in many ways. These include the trade title medications Percocet and Vicodin...