Tadalista 20 Mg contains an active ingredient, Tadalafil, which is used to treat Erectile Dysfunction in men. Tadalista 20 Mg is a prescription based drug which may be available at any of the drugstores, leading online pharmacy stores, and medical supply stores. Tadalafil (PDE-5 inhibitor) is an active salt in Tadalista 20 Mg tablet which is increases the blood flow to the penis by relaxing the muscles in penile blood vessels hence, treating Erectile Dysfunctioning.