USA. The Food and Drug Administration (FDA) has warned consumers not to purchase or to consume Actra- Rx or Yilishen, two products promoted and offered for sale on websites as dietary supplements for treating erectile dysfunction and enhancing sexual performance in men. The FDA has found that these products contain undeclared prescription strength sildenafil. Sildenafil, when taken together with certain prescription drugs containing nitrates (such as nitroglycerin) may cause a significant lowering of blood pressure to an unsafe level.
These drugs should therefore be taken only under medical supervision. The FDA is advising consumers who use Actra-Rx or Yilishen to stop taking these products and to consult their health-care providers regarding erectile dysfunction treatment.
FDA Talk Paper, 2 November 2004. Available on the Internet at www.fda.gov