Kamagra Oral Jelly 100mg consists of sildenafil, a phosphodiesterase kind 5 (PDE5) inhibitor. Sildenafil Sildenafil in Kamagra Oral Jelly acts on the erectile tissue of the penis to amplify blood drift into the penis, which is wished to motive an erection. During sexual stimulation nitric oxide is launched in the erectile tissue of the penis which prods the enzyme guanylate cyclase.