Propoxyphene is in a group of drugs called narcotic pain relievers. It is the generic term for Darvocet or Darvon.
This is a combination of 100 mg of Darvon and 650 mg of acetominophen. It is also the same as Darvocet.
Propoxyphene or Darvon is a narcotic analgesic -- a painkiller. APAP is the abbreviation for acetaminophen (or Tylenol), a mild painkiller and antipyretic.