Oral Contraceptives: Boost in glucuronidation causing greater plasma clearance along with a lessened half-lifetime of acetaminophen.Death can materialize inside of one hour of using an overdose of Darvocet-N (propoxyphene napsylate and acetaminophen) . Most of the deaths that transpire in people that get Darvocet-N (propoxyphene napsylate and aceta