Kamagra Oral Jelly contains sildenafil, a type 5 phosphodiesterase (PDE5) inhibitor. Sildenafil Sildenafil in Kamagra Oral Jelly acts on the erectile tissue of the penis to increase blood flow to the penis, which is needed to cause an erection. During s*xual stimulation, nitric oxide is released into the erectile tissue of the p*nis, which activates the enzyme guanylate cyclase. This enzyme increases the levels of a chemical called cyclic guanosine monophosphate (cGMP), which relaxes the blood vessels in the p*nis and allows blood to fill the spongy erectile tissues to cause an erection. Another enzyme called phosphodiesterase type 5 (PDE5) breaks down cGMP preventing blood flow to the penis, causing you to lose an erection. The sildenafil in Kamagra Oral Jelly inhibits the action of PDE5 which resolves erectile dysfunction by allowing the natural process of s*xual stimulation to activate the cGMP mechanism to achieve and maintain an erection. Kamagra Chewable  works faster than the tablet form, as it is absorbed more quickly into the blood, being effective within 20-45 minutes.