Tadalista works in such a way that it is able to increase the blood flow to the penis by relaxing smooth muscles in it. Sufficient blood supply of the penis ensures lasting erections. Tadalafil, the main active ingredient of Tadalista has a half-life period of 17.5 hours, this means that Tadalista works for 36 hours at least. It is also widely known as the "weekend pill" because of its continuous operation, therefore, has become popular around the world. Once a man completed sexual intercourse, blood flow to his penis decreases, and the erection disappears. Without pre-excitation, on the contrary, Tadalista will not cause unwanted erections.