Kamagra 100 is a medication used to treat erectile dysfunction in men. This medication contains sildenafil, which is the same ingredient used in Viagra. Kamagra 100 is available over the counter and online and is known to be an effective and safe medicine to cure the effect of erectile dysfunction. This drug, apart from being used to cure erectile dysfunction, is also used to treat pulmonary arterial hypertension. Sildenafil citrate is known to be one of the active ingredients present in Kamagra 100 mg. This drug is also known as the blue pill and is mainly used to treat erectile dysfunction in men, also known as impotence. When a man suffers from erectile dysfunction, it becomes difficult for him to maintain an erection during s*xual intercourse. This allows the man to be dysfunctional at the time of intercourse as he is unable to maintain his erection.