Generic Udenafil - Zydena

Generic Zydena - the drug udenafil, marketed under the trade name Zydena developed by Dong-A Pharmaceutical in South Korea. It is used to treat erectile dysfunction, it has fairly rapid onset of action with long duration (from 11 to 13 hours). The pills are available in 100 and 200 mg dosages. Udenafil is available in Korea and the Philippines.