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Propoxyphene overdose

Propoxyphene is medicine used to relieve pain. Propoxyphene overdose occurs when someone takes too much of this medicine.

The U.S. Food and Drug Administration (FDA) took this drug off the market in December 2010 because of the potential to cause deadly heart disturbances.

This is for information only and not for use in the treatment or management of an actual poison exposure. If you have an exposure, you should call your local emergency number (such as 911) or 1-800-222-1222 to find a local poison control center.

Poisonous Ingredient

Propoxyphene

Where Found

Brand names include:

  • Darvocet
  • Darvon
  • Darvon-N
  • Dolene

Note: This list may not be all-inclusive.

Symptoms

Eyes, ears, nose, and throat:

  • Hearing loss
  • Pinpoint pupils

Heart and blood vessels:

  • Heart rhythm disturbances
  • Low blood pressure
  • Weak pulse

Lungs:

Muscles:

Nervous system:

Skin:

Stomach and intestines:

Home Care

Seek immediate medical help. DO NOT make a person throw up unless told to do so by Poison Control or a health care professional.

Before Calling Emergency

Determine the following information:

  • The patient's age, weight, and condition
  • The name of the product (ingredients and strengths if known)
  • The time it was swallowed
  • The amount swallowed
  • If the medication was prescribed for the patient

Poison Control

In the United States, call 1-800-222-1222 to speak with a local poison control center. This hotline number will let you talk to experts in poisoning. They will give you further instructions.

This is a free and confidential service. All local poison control centers in the United States use this national number. You should call if you have any questions about poisoning or poison prevention. You can call 24 hours a day, 7 days a week.

What to Expect at the Emergency Room

The health care provider will measure and monitor the patient's vital signs, including temperature, pulse, breathing rate, and blood pressure. Symptoms, including heart rhythm disturbances and seizures, will be treated as appropriate

The patient may receive:

  • Activated charcoal
  • Antidote for acetaminophen (Tylenol) if the patient took a form of the drug that contained this medicine (such as Darvocet)
  • Fluids through a vein (IV)
  • Medicine to block the effect of the overdose drug on the central nervous system (narcotic antagonist)
  • Medicine (sodium bicarbonate) to help manage serious heart problems that occur in the most severe poisonings
  • Tube through the mouth or nose into the stomach to wash out the stomach (gastric lavage)

Outlook (Prognosis)

If the proper narcotic antagonist can be given, recovery from an acute overdose occurs within 24 - 48 hours.

Alternative Names

Propoxyphene hydrochloride; Dextropropoxyphene

References

Goldfrank LR, ed.Goldfrank's Toxicologic Emergencies

Update Date 1/30/2013

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