How vigra works?

Viagra, or sildenafil, works by inhibiting an enzyme called phosphodiesterase type 5 (PDE5), which leads to increased levels of cyclic guanosine monophosphate (cGMP) in the body. This process relaxes the smooth muscle in the blood vessels of the penis, allowing for increased blood flow during sexual arousal. As a result, it helps achieve and maintain an erection. It’s important to note that Viagra only works in response to sexual stimulation.