NONE of these methods has been shown to be effective (or safe) by any reputable scientific studies, and none have been approved by medical institutions or government agencies. Some of the ads punting such products may claim that they are backed by scientific research, but a little digging will quickly show that such research is highly dubious. You can’t trust customer testimonials either.
“Many men think that the hardest and thickest they can get it just by letting nature take its course and when that blood reaches the penis they get an erection and it ends there. I don’t think that’s the case. It’s like working out in the gym. You will have a whole different workout and your muscles will respond (and look) differently when you have taken a pre-workout, creatine or some other supplement — your pumps will be bigger and your muscles will look fuller. Well the same goes for the penis: if you pop a pill or pump it with a hydro or air pump, you will surely see a difference,” says Debois. The Extenze is one of those popular penis/erection supplements.