Vigora 100 mg is a medication that contains the active ingredient Sildenafil Citrate. Sildenafil Citrate is commonly used to treat erectile dysfunction (ED) in men. It works by increasing blood flow to the penis, allowing a man to achieve and maintain an erection when sexually aroused. Sexual arousal plays a crucial role when taking Vigora 100 mg or any medication containing Sildenafil Citrate.Sildenafil Citrate does not cause an automatic or spontaneous erection. Instead, it enhances the body's natural response to sexual stimulation. This means that sexual arousal and stimulation are essential for the medication to be effective. When a man is sexually aroused, the brain sends signals to the nerves in the penis, leading to the release of nitric oxide. Nitric oxide then triggers the production of cyclic guanosine monophosphate (cGMP), a substance that relaxes and dilates the blood vessels in the penis. Sildenafil Citrate inhibits the action of an enzyme called phosphodiesterase type 5 (PDE5), which can break down cGMP. By inhibiting PDE5, Sildenafil allows cGMP to accumulate in the penis, promoting increased blood flow. This increased blood flow leads to an erection when combined with sexual arousal. In summary, Vigora 100 mg does not create an erection on its own; it enhances the body's natural response to sexual stimulation. Sexual arousal is necessary to trigger the processes that lead to an erection when using this medication.