The active component of the medication kamagra , which is used to treat erectile dysfunction, is sildenafil citrate.This issue will be resolved if you take this medication, which is a phosphodiesterase type 5 inhibitor. When sexually aroused, kamagra is more helpful in achieving a strong erection. It is best to take and buy kamagra online . Use this with water 20 to 30 minutes prior to sexual activity.