The Zydenafil length of time before results varies from product to product. This largely depends on the quality of the male enhancement supplement. They are not all made equal and of the same quality, just like with automobiles, some just simply are made better than others so they last longer. A good quality product should give you results within one month of beginning intake. What you should first begin to see is a much firmer erection, more staying power, more pleasure during sex, and a minor to moderate increase in size.