The Food and Drug Administration (FDA) is warning consumers to not buy or use the following tainted sexual enhancement supplements:

  • Diablos Eca Fire Caps
  • Stiff Nights
  • La Pepa Negra
  • Herb Viagra

An FDA analysis has found Stiff Nights, La Pepa Negra, and Herb Viagra to contain sildenafil, the active ingredient in the prescription drug Viagra (Pfizer). Viagra is a phosphodiesterase type 5 inhibitor approved for the treatment of erectile dysfunction. It may interact with nitrates found in nitroglycerin and lower blood pressure levels.

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Diablos Eca Fire Caps were found to contain sildenafil, phenolphthalein, sibutramine, and deisobutylbenzylsibutramine. Phenolphthalein is a chemical that is not found in any approved drug in the United States. It may present a risk of cancer and may interact with other medications a consumer is taking. Sibutramine is a controlled substance that was pulled from the market in October 2010 for safety concerns. Sibutramine is known to increase blood pressure and/or pulse rate in some patients. It may pose a significant risk in patients with a history of coronary artery disease, congestive heart failure, arrhythmias, or stroke.

For more information visit FDA.gov.