Zenegra 50 is a medication used to treat erectile dysfunction (ED) in men. It contains an active ingredient called Sildenafil Citrate, which is a PDE-5 inhibitor. This helps to increase the blood flow to the penis, resulting in an erection. It is recommended to be taken 30-60 minutes before sexual intercourse, and the effects can last up to 4-5 hours. However, it is important to consult a doctor before taking this medication, as it may not be suitable for everyone. It is also important to be aware of the possible side effects, such as headache, flushing, dizziness, and stomach discomfort.