Like other medications containing Sildenafil Citrate, Kamagra Oral Jelly works by increasing blood flow to the penis during sexual stimulation, thereby facilitating an erection. It does this by inhibiting the enzyme phosphodiesterase type 5 (PDE5), which leads to increased levels of cyclic guanosine monophosphate (cGMP) in the body. This results in relaxation of the smooth muscles in the blood vessels of the penis, allowing for improved blood flow and erection.