Sexual Enhancement Supplements Contain Hidden Drugs, FDA Warns

The Food and Drug Administration is warning consumers today (March 21) that several supplements advertised as sexual enhancements contain hidden drugs.

A supplement called "Stiff Days" contains sildenafil, the active ingredient in prescription drug Viagra, which is used to treat erectile dysfunction; "Rock-It Man" contains a similar compound called hydroxythiohomosildenafil; and "Libido Sexual Enhancer" contains both of those ingredients as well as tadalafil, which is the active ingredient in the prescription drug Cialis, according to the FDA.

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Karen Rowan
Health Editor
Karen came to LiveScience in 2010, after writing for Discover and Popular Mechanics magazines, and working as a correspondent for the Journal of the National Cancer Institute. She holds an M.S. degree in science and medical journalism from Boston University, as well as an M.S. in cellular biology from Northeastern Illinois University. Prior to becoming a journalist, Karen taught science at Adlai E. Stevenson High School, in Lincolnshire, Ill. for eight years.