Legendz XL is a male enhancement supplement that comes with a manufacturer’s claim of effectiveness. To promote their supplement, the company even has a commercial in which you can see what this formula dos to your body and abilities. It has been clinically proven that this supplement helps to increase blood flow in just 60 minutes. This means it shows its effects in just an hour. Many people might be wondering what blood flow has to do with performance or sexual competence. Actually, it has everything to do with performance.