What’s the history of Cialis?

Cialis is the brand name for the drug tadalafil, used to treat erectile dysfunction. Made by Lilly ICOS, LLC, Cialis is available in dosages of 5 mg, 10 mg, and 20 mg. It gained approval by the U.S. Food and Drug Administration (FDA) in 2003 and was the third prescription drug made for erectile dysfunction, following Viagra and Levitra.

Cialis entered the market in 2003 for treatment of erectile dysfunction.

Cialis eventually surpassed Viagra in sales and is currently the best-selling erectile dysfunction drug. On the Pharma Compass list of top pharmaceuticals for the year 2015, Cialis ranks at number 190, with revenues of US$2.3 billion for that year. For comparison, Viagra ranked at number 473 on the same list. Cialis, therefore, is not only the best-selling drug for erectile dysfunction, it is one of the best-selling drugs worldwide, period.