Cialis is a cure that is used for treatment of male E.D. or E.P.. This medication is from the similar group of medicines as Sildenafil, or viagra. However there are several differences. These two types of medicines are named PDE-5 inhibitors. But Tadafil, or Cialis can could be used for treatment of P.E. - premature ejaculation. cure can be prescribed to men who experience both erectile dysfunction and P.E.