Oral Jelly Kamagra contains sildenafil, a strong inhibitor of phosphodiesterase type 5 (PDE5). 

It contributes to the increase of cyclic guanosine monophosphate (cGMP) by inhibiting the enzyme PDE5. 

Increased blood flow is made possible by the penile blood vessels relaxing as a result of elevated cGMP. 

By enabling the penis to fill with blood and stay rigid during sexual activity, this aids in the production of an erection.