In the last 10 years, there have been massive developments in this area of medicine called erectile dysfunction.As a matter of fact, between 1998 and 2002, only two treatments were available for the treatment of this condition.It was in 2003 that Lilly (the manufacturers of Cialis) first released Cialis into the market and it has continued to make it available for those who have a prescription. While the most active ingredients in other ed treatments are sildenafil citrate (a pde5 inhibitor) or alprostadil (a prostaglandin), the pde5 inhibitor in Cialis is called tadalafil.There are two versions of Cialis - Cialis as needed and Cialis daily.If you plan on having sex more than three times per day, the Cialis daily is your best option.Also, in 2011, the U.S.

government approved that Cialis can be used to treat an enlarged prostate.