The U.S. Food and Drug Administration (FDA) has issued a recall of prazosin hydrochloride, a commonly used blood pressure medication, after detecting potential cancer-causing impurities. This action affects more than 580,000 bottles of the drug distributed nationwide by Teva Pharmaceuticals USA and Amerisource Health Services.
Why Was the Prazosin Recall Announced?
The recall was prompted by the discovery of nitrosamines, a class of chemicals that may increase the risk of cancer if consumed in high amounts over time. These impurities can form during the manufacturing or storage process of certain medicines.
The FDA classified the incident as a Class II recall, meaning the risk of serious harm is moderate but still concerning enough to warrant product withdrawal. Both Teva and Amerisource Health acted quickly to voluntarily remove affected batches from circulation to protect patients.
What Is Prazosin Used For?

Prazosin hydrochloride is prescribed to treat high blood pressure (hypertension) by relaxing blood vessels and improving blood flow. Interestingly, it’s also used for managing sleep disturbances and nightmares caused by post-traumatic stress disorder (PTSD).
Although prazosin has proven effective for many patients, this recall serves as an important reminder that even well-established medications can face quality control challenges that must be addressed quickly.
Comparison: Prazosin vs. Other Blood Pressure Medicines
| Feature | Prazosin Hydrochloride | Lisinopril / Amlodipine |
|---|---|---|
| Primary Use | Lowers blood pressure by relaxing blood vessels | Lowers BP by reducing strain on the heart or relaxing arteries |
| Additional Use | Helps reduce PTSD-related nightmares | Primarily used for hypertension and heart conditions |
| Recall Reason | Nitrosamine contamination | Usually due to formulation or packaging issues |
| FDA Risk Level | Class II (moderate risk) | Depends on issue severity |
What Should Patients Do?
If you take prazosin, don’t stop your medication without consulting your doctor. Sudden discontinuation can cause blood pressure to rise rapidly, which can be dangerous. Instead:
- Check the label for manufacturer details and batch number.
- Contact your pharmacist to verify if your bottle is part of the recall.
- Consult your doctor about safe alternatives or unaffected batches.
Your healthcare provider can help you transition smoothly to another medication if needed, ensuring your blood pressure stays under control.
The FDA’s Ongoing Monitoring

The FDA continues to strengthen its monitoring systems and manufacturing guidelines to reduce the chance of contamination in prescription medicines. The agency is working closely with drug companies to ensure safer production practices and better quality checks to prevent such impurities from recurring.
Final Thoughts
The prazosin blood pressure medicine recall highlights how critical drug safety and transparency are for public health. While the news may sound worrying, it shows the FDA’s system is functioning as intended — identifying risks early and protecting patients before serious harm occurs.
For patients, the best approach is to stay informed, stay calm, and follow professional medical advice. Regular communication with healthcare providers ensures you stay safe, even when unexpected recalls occur.
