Why do supplement makers keep putting Viagra in their pills?

Over-the-counter supplements are incredibly popular all over the world, and the United States is no exception. The regulations for what supplement makers can claim are relatively lax in the US, with most supplements making bold claims about how they can improve various aspects of your health, all of which are accompanied by a tiny asterisk that says the claim wasn't evaluated by the FDA. In most cases, supplements packed with vitamins and various other minerals or blends are fine, but may not de...