The U.S. Food and Drug Administration is warning men that "Rhino" products promising better sex may pose serious health risks.
Since 2007, the FDA has identified more than 25 products marketed with variations of the name Rhino that contained hidden drug ingredients, the agency reported Tuesday.
The FDA has received reports of chest pain, severe headaches and prolonged erections after taking a Rhino male enhancement product. Some men have been hospitalized due to extreme drops in blood pressure.
"Over the past few years, the FDA has been combating the retail sale of male enhancement drug products that are frequently misrepresented as dietary supplements and that contain hidden and potentially harmful active drug ingredients," said Donald Ashley in an agency news release. He's the compliance director in the FDA's Center for Drug Evaluation and Research.
The unapproved products are sold at gas stations and convenience stores, on websites such as eBay and Amazon, and have been found in international mail shipments to the United States.