The FDA believes several products being marketed as natural supplements have the same active ingredient that Viagra has in it, according to a FDA warning letter.
The letter, sent to R Thomas Marketing and Just Enhance, reads in part, "...your websites at www.herbviagra.com and www.herbsviagra.com. Based on our review, FDA has determined that you offer products for sale in violation of the Federal Food, Drug, and Cosmetic Act."
According to the letter, four of their products, Black Ant, Herb Viagra, Real Skill and Stree Overlord all contain the undeclared active pharmaceutical ingredient sildenafil – the active active pharmaceutical ingredient in Viagra.
"The distribution or sale of these products without approved applications violates these provisions of the FD& C Act," reads the letter dated July 31, 2015.