An inhibitor of phosphodiesterase-5 (PDE-5) is the medication Vidalista 20mg. The medication's active component, tadalafil, is effective at treating erectile dysfunction. The erection-inducing PDE5 enzyme in the penis is directly regulated by Vidalista 20 mg. It is always advisable to use protection before engaging in sexual activity because the medication does not treat STDs. A medication named Vidalista 20mg is used to treat erectile dysfunction in men and other male sexual difficulties. A powerful erection is impossible for men who have ED, a sexual dysfunction.