Drugs Home > Propoxyphene Hydrochloride

Propoxyphene hydrochloride is a type of narcotic used for relieving pain. This prescription medication comes in the form of a capsule and is taken every four hours as needed for pain. Although it is considered a weak narcotic, this drug is extremely dangerous in the case of an overdose. The medication's most common side effects include nausea, drowsiness, and dizziness.

What Is Propoxyphene Hydrochloride?

In November 2010, the United States Food and Drug Administration (FDA) withdrew all medications that contain propoxyphene from the market. It has been determined that the risks of propoxyphene outweigh the possible benefits. In particular, the FDA was concerned about the drug's ability to cause serious changes in the heart rhythm, even at normal doses. Pharmacies will no longer sell this medication, and people who take it should stop and ask their healthcare provider for a more suitable pain medication.
Propoxyphene hydrochloride (Darvon®) is a prescription medication approved to treat mild-to-moderate pain.
(Click What Is Propoxyphene Hydrochloride Used For? for more information, including possible off-label uses.)

What Are the Side Effects?

As with any medicine, propoxyphene hydrochloride can cause side effects. However, not everyone who takes the drug will experience side effects. Most people tolerate it quite well.
If side effects do occur, in most cases, they are minor and either require no treatment or are treated easily by you or your healthcare provider. Serious side effects are less common.
Common side effects of propoxyphene hydrochloride include but are not limited to:
  • Dizziness
  • Drowsiness
  • Nausea
  • Vomiting.
(Click Side Effects of Propoxyphene Hydrochloride to learn more, including potentially serious side effects that you should report immediately to your healthcare provider.)
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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