Vidalista 20 mg is especially useful when someone is suffering from erectile dysfunction and impotence problems that prevent you from getting an erection. Doctors will only prescribe these pills to patients who have lost the ability to get an erection. Vidalista 20mg contains Tadalafil, which helps increase blood flow to your penis. After taking a pill this will increase inhibition of the hormone PDE-5 which causes vasodilation. Then, when nitric oxide is activated, you can notice erection results right after.