The energetic ingredient in Kamagra 100 is Sildenafil Citrate. It belongs to the household of PDE-5 inhibitory vasodilators. These capsules work by means of dilating blood vessels in the body, specially round the genital area. This in flip will expand the blood furnish which will permit for an erection. Sildenafil citrate is presently one of the general remedies for erectile dysfunction.