Vidalista 20: A Perfect Approach To Developed ED | Vidalista 20 mg Tablet is a phosphodiesterase 5 (PDE5) inhibitor used for the treatment of impotence (ED), also known as the inability to get a hard erection, in men. Following sexual stimulation, Tadalafil 20mg works by helping the blood vessels in the penis to relax, allowing the flow of blood into the penis. Take this medication after consulting your doctor for complete enjoyment.