Zydenar, an anti-impotence drug, to launch from Dec. 22.

Zydenar, a 4th anti-impotence drug developed in the world by Dong-A, will be launched to the market from Dec. 22, which will be available under the physician's prescriptions at any pharmacies across the nation.

Dong-A said that the clinical study showed its excellent efficacy lasting for over 12 hours, and any patients could get Zydenar at far reasonable price.

Marketing manager of Zyden...