After the invention of sex came the products intended to make sex better. Some of them were bogus, like rhino horn, while certain herbs did actually affect the male libido. Viagra and Cialis were game-changers in treating erectile dysfunction, but their availability only by prescription frequently leaves people looking at over-the-counter options for increasing sexual stamina. But do the herbal concoctions promising an all-natural way to improve erections with no side effects really live up to their claims? Here’s the 7 things to know about pills for men, and other options for making erections more magnificent.