The best medication for treating erectile dysfunction in urology is zudena 100mg. It is a member of the PDE5 inhibitor medicine class, which also includes several other erectile dysfunction medications including avanafil, sildenafil, tadalafil, and vardenafil. It is sold under the brand name Udzire and was created by Dong-A Pharmaceutical. Udenafil has been used on-demand and once daily, with a maximum blood plasma concentration attained after 1.0 to 1.5 hours and a half life of 11 to 13 hours. Visit genericvilla site for more details.