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C. Michael White | The Conversation
A generic blood pressure drug called prazosin, made by Teva Pharmaceuticals, is being recalled by the Food and Drug Administration because it contains elevated levels of cancer-causing chemicals called nitrosamines.
The recall, which Teva announced on Oct. 7, 2025, affects more than 580,000 prazosin capsules. Prazosin is prescribed to around 510,000 patients yearly and is used to treat post-traumatic stress disorder as well as high blood pressure.
I am a pharmacologist and pharmacist who has studied nitrosamine contamination of popular blood pressure, diabetes and heartburn drugs, as well as other issues in generic drug manufacturing.
Prazosin has been available as a generic medication for more than 25 years and, like many generics that have been around that long, is now produced by multiple manufacturers. This ratchets up competition on price, which may explain why older generics are more prone to manufacturing issues that may harm patient health.
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