There are a lot of companies that make claims that are debatable. For instance, do people really think there is a pill that will make your junk bigger? Apparently they do, they sell millions of them. But who is going to argue when it doesn't work and admit they needed the pill to begin with? VERY few over the counter supplements on the market are going to have a huge effect that you can literally feel as you use them. Most effects are more subtle and are experienced over a period of time. Bottom line, if it sounds to good to be true it almost always is.