Zudena is a medication used to treat erectile dysfunction (ED). It contains Udenafil, a phosphodiesterase type 5 (PDE5) inhibitor. Udenafil works by increasing blood flow to the penis, helping to achieve and maintain an erection during sexual arousal. If you’re considering Zudena pills, it’s best to talk to a healthcare provider to ensure it’s safe based on your medical history. Do you need more details on its effectiveness, risks, or how it compares to other ED. The effects can last for up to 8 hours, which is generally longer than Sildenafil but shorter than Tadalafil.