Prescription pain pill Darvon and related brand Darvocet will be removed from the U.S. market, the Food and Drug Administration (FDA) has announced. Public health officials say the medications can cause potentially fatal heart rhythms.
The active ingredient in the dangerous drugs, propoxyphene, has been the subject of safety concerns for decades. The FDA said that it has decided to take action now because a recent study provided the first data showing that Darvon interferes with the electrical activity of the heart. Xanodyne Pharmaceuticals, which manufactures Darvon and Darvocet, has agreed to halt the drugs' marketing. The FDA has also asked generic drugmakers to stop marketing medications containing propoxyphene.
People taking Darvon and Darvocet should continue doing so until they receive a replacement prescription from their doctor, the FDA said.