Kamagra 50 is a lower-dose version of Kamagra, which contains 50 mg of sildenafil citrate. Like other forms of Kamagra, it is used to treat erectile dysfunction (ED) by increasing blood flow to the penis, which helps achieve and maintain an erection.Kamagra 50 should be taken approximately 30 to 60 minutes before sexual activity. It is usually taken as a single dose and can be effective for several hours.