Quest Diagnostics

Drug testing for propoxyphene

Propoxyphene is an opioid used to relieve mild to moderate pain. At the request of the Food and Drug Administration, it was voluntarily removed from the market by its manufacturer in 2010 after “clinical data showed that the drug put patients at risk of potentially serious or even fatal heart rhythm abnormalities.”
Physical symptoms can include slow heartbeat, dizziness, shallow breathing, confusion, convulsions, constipation, jaundice, and nausea. Propoxyphene in high doses and taken in combination with other drugs such as alcohol, sleeping aids, and antidepressants is associated with drug-related deaths according to the National Institutes of Health
Brand names for propoxyphene included Darvon®, Darvon-N® and PC-CAP® and Darvocet® when used in combination with acetaminophen. 
View the Quest Diagnostics Drug Testing Index™ for trends in drug testing. 
Download our reference guide for Common Drugs of Abuse.