Kamagra 50mg is a medication used primarily to treat erectile dysfunction (ED) in men. It contains sildenafil citrate, which is the same active ingredient found in Viagra. Sildenafil citrate works by increasing blood flow to the penis when a man is sexually stimulated, which helps him achieve and maintain an erection. It is typically taken orally, with or without food, about 30 minutes to 1 hour before sexual activity. The effects of Kamagra usually last for about 4 hours.