Propoxyphene also known as Darvon is an analgesic in the opioid category, patented in 1955 and manufactured by Eli Lilly and Company. It is an optical isomer of levopropoxyphene. It is intended to treat mild pain and also has antitussive and local anaesthetic effects.
Propoxyphene is medicine used to relieve pain. It is one of a number of chemicals called opioids or opiates, which were originally derived from the poppy plant and used for pain relief or their calming effects Propoxyphene overdose occurs when someone intentionally or accidentally takes too much of this medicine. Dextropropoxyphene is a DEA Schedule IV controlled substance. Substances in the DEA Schedule IV have a low potential for abuse relative to substances in Schedule III.
The US Food and Drug Administration (FDA) took this drug off the market in December 2010 because of the potential to cause deadly heart disturbances.
Propoxyphene Safety Information
Do not use propoxyphene if you have a history of suicidal thoughts or actions. Propoxyphene should never be taken together with a sedative (such as Valium or Xanax) or an antidepressant if you are also drinking large amounts of alcohol. Propoxyphene may be habit-forming and should be used only by the person it was prescribed for. Keep the medication in a secure place where others cannot get to it. Do not drink alcohol while you are taking propoxyphene. Dangerous side effects or death can occur when alcohol is combined with a narcotic pain medicine. Check your food and medicine labels to be sure these products do not contain alcohol.
Never take more than your prescribed dose of propoxyphene. Tell your doctor if the medicine seems to stop working as well in relieving your pain. Propoxyphene can cause side effects that may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be awake and alert. Do not stop using propoxyphene suddenly, or you could have unpleasant withdrawal symptoms. Talk to your doctor about how to avoid withdrawal symptoms when stopping the medication.