Sildenafil may interact with prescription drugs known as nitrates, including nitroglycerin, and can dangerously lower blood pressure. The FDA is investigating the reported death of a 26-year old man, possibly associated with the use of Vigor-25.
Vigor-25, distributed by Piston Corp., is sold on Internet sites and possibly in some retail outlets.
"This product is dangerous to consumers because it claims to contain only natural ingredients when it actually contains a prescription drug ingredient," said Deborah M. Autor, director of the Office of Compliance in the FDA's Center for Drug Evaluation and Research. "Tainted products place consumers at risk of injury and death, especially those consumers with underlying health conditions."
The FDA has found many products marketed as dietary supplements for sexual enhancement during the past several years that can be harmful because they contain active ingredients in FDA-approved drugs or variations of these ingredients. Sexual enhancement products promising rapid effects (e.g., claim to work in minutes to hours) or long-lasting effects (e.g., claim to last 24-72 hours) are likely to contain a contaminant.