Zudena 100 mg can be a highly effective short-term treatment for erectile dysfunction, but it does not cure the condition. It is important to consult a doctor before using Zudena 100 mg, especially if you have any underlying health conditions or are taking other medications. It should be taken about 30 minutes to 1 hour before sex, and its effects can last for 4-6 hours. Individuals with severe liver or kidney problems, as the drug may not be processed properly.