Kamagra Oral Jelly/ contains sildenafil citrate, which helps improve blood flow to the penis by relaxing blood vessels. It works by inhibiting the PDE5 enzyme, allowing a substance called cyclic guanosine monophosphate (cGMP) to remain active for longer and relax the smooth muscles in penile blood vessels. This helps increase blood flow during sexual stimulation, supporting the ability to achieve and maintain an erection. Kamagra Oral Jelly does not automatically cause an erection; sexual stimulation is necessary for it to work. Sildenafil can also lower blood pressure slightly throughout the body and must never be combined with nitrate medications, as this can cause a dangerous drop in blood pressure.