By boosting blood flow to the penis, Vidalista 80 aids in achieving and sustaining an erection. Tadalafil, the active component of Vidalista 80mg, is a class of PDE5 inhibitor. An enzyme called PDE5 has the ability to narrow the blood vessels in the penis, which makes getting an erection harder. PDE5 is inhibited by tadalafil, which helps to open up blood vessels and supply more blood to the penis.see Vidalista 40 Side Effects and then you can used it.