Reviews and ratings for levitra when used in the treatment of erectile dysfunction. Had to increase over the years to more than mg and still not a sure thing. . or Cialis when I was still recovering from surgery, before nature helped make them unnecessary. Cut it in half, and still effective (though not as dramatic). Medications like sildenafil, vardenafil and tadalafil can be highly effective for treating erectile dysfunction, more commonly known as ED. If you expect to have sex, make sure you take your sildenafil, vardenafil, tadalafil or other ED treatment. Mar 9, About 70% of men respond well to Viagra, Levitra, or Cialis, but the success The most effective way to take alprostadil is to inject it directly into the out of the cylinder to create a vacuum, which increases penile blood flow.