Definition
Darvon was a brand name for propoxyphene, an opioid pain reliever that was previously prescribed for mild to moderate pain. It worked by altering the way the brain perceives pain. It was often combined with other pain relievers like acetaminophen. However, it was later found to have serious side effects, including potential heart problems. Due to these safety concerns, Darvon was withdrawn from the market in many countries. It is no longer prescribed.