Slang Term(s): Darvon
Screening Cut-off in Urine: 300 ng/mL
Propoxyphene is a drug often prescribed to treat pain and is related structurally to methadone. Propoxyphene is generally taken orally and its effects peak in 1 – 2 hours. Overdose of propoxyphene effects the brain and can cause severe euphoria. Extended use of propoxyphene can cause respiratory depression, analgesia, stupor, and coma.