Like Viagra, Stendra, and Levitra, Cialis (the brand name of the active ingredient tadalafil) is highly effective as a treatment for (ED). But no medication has a 100 percent success rate, and Cialis ...

Is It Safe to Take Cialis Daily? Unlike other ED medications, such as Viagra® (sildenafil) and Levitra® (vardenafil), which work for four to five hours per dose, Cialis® (which contains the active ...