Most top-selling, over-the-counter sexual treatments unproven, some could be harmful

(Wake Forest Baptist Medical Center) From horny goat weed to ginseng and maca, over-the-counter dietary supplements sold to improve male sexual health contain a wide variety of "natural" ingredients. Researchers from Wake Forest Baptist Medical Center reviewed the scientific evidence for the most common ingredients to determine if they are effective -- and most importantly -- safe. The results are published online ahead of print in the Journal of Sexual Medicine.