Impotence, also known as ED, is a problem of male sexual function that is commonly treated with the medication Vidalista 20 mg. The medication works by reestablishing an adequate blood flow to the erectile tissue, allowing the patient's penis to solidify and hold its erection for an extended amount of time. The mechanism of action of Vidalista is based on the inhibition of phosphodiesterase, an enzyme. By locally inhibiting this enzyme, the medication prevents interfering with the body's natural process of achieving an erection. Its primary component, tadalafil, increases the intensity of circulation in the penile region when combined with appropriate sexual stimulation, allowing the man to build up an erection prior to and during physical contact.