On Jan. 8, 2008, Eli Lilly announced that the U.S. Food and Drug Administration (FDA) had approved Cialis(R) (tadalafil)(1) for once daily use (2.5 mg and 5 mg), an oral medication taken once per day to treat erectile dysfunction (ED).

Cialis for use as needed transformed the U.S. ED market when it was approved in 2003 as the first and only PDE5 inhibitor clinically proven to provide sustained efficacy for up to 36 hours. Cialis for once daily use provides a new option for men who may be looking for a dosing option that can be taken without regard to timing of sexual activity. In consultation with their physician, patients now have the freedom to choose the dosing regimen that is appropriate for them.