In addition to Viagra, Rex MD offers brand-name Cialis and generic Cialis (tadalafil). Both Viagra and sildenafil are available in 25-, 50-, and 100-mg doses. Rex MD has a rating of 4.5 out of 5 ...
Viagra (sildenafil) Cialis (tadalafil) Type PDE5 inhibitor PDE5 inhibitor Dosage 25-100 milligrams (mg), but only once every ...