How long has Cialis been on the market?

Part of this evolution was the U.S. approval of Cialis for use as needed (5 mg, 10 mg, and 20 mg) on November 21, 2003 , as the first and only oral ED medication that can work for up to 36 hours. * In the time since, Cialis has grown to become global share-of-market leader in sales among PDE5 inhibitors.

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