Click Here To Order Official Vidalista 20mg Vidalista 20 is a phosphodiesterase type 5 (PDE5) inhibitor. PDE5 is an enzyme that breaks down cGMP, a chemical that helps relax the muscles in the penis. By blocking PDE5, Vidalista allows cGMP to build up, which helps to relax the muscles and create an erection. Vitalista tablets are available in different dosages like 2.5mg, 5 mg, 10mg, and 40mg. you can take this tablet at least 30 to 60 minutes before intercourse. If you take the first time, you must consult your healthcare provider or ED consultant.