Zudena 100 mg is a medication used to treat erectile dysfunction (ED) in men. It contains Udenafil as the active ingredient, which is a PDE5 inhibitor, similar to other ED medications like Sildenafil (Viagra), Tadalafil (Cialis), and Vardenafil (Levitra). Udenafil works by increasing blood flow to the penis, helping men with ED achieve and maintain an erection during sexual activity. https://www.genericday.com/zudena-100-mg.html