Cenforce 120 oral dose of sildenafil citrate begins to work after it breaks down in the system and its onset period is over. Once the tablet initiation period of Cenforce 120mg is over, Sildenafil Citrate enters its active phase. In its active phase, sildenafil citrate begins to block the PDE5 enzyme and allows the body to generate nitrate oxide from the breakdown of nitrates. The nitric oxide then reaches different parts of the body and vasodilates the blood vessels that line the parts, such as the shaft of the p*nis. When a man feels a desire for s*xual intercourse or physical affection due to s*xual arousal, the brain directs blood flow to the p*nis, which hardens due to the expansion of blood vessels by the p*nis. The whole process is the means by which a man experiences relief from poor erectile functions, with the help of Cenforce 100, but sildenafil citrate must be active in the body and s*xual arousal must occur concurrently for it to occur. this relief.