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18 April at 09:06new

The little purple pill buy fildena online, Viagra, has revolutionized the treatment of erectile dysfunction since its introduction. Its magic lies in its active ingredient, sildenafil citrate, which enhances blood flow to the penis by inhibiting an enzyme called phosphodiesterase type 5 (PDE5).

When a man becomes sexually aroused, nitric oxide is released in the erectile tissue, which stimulates the production of cyclic guanosine monophosphate (cGMP). This compound relaxes the smooth muscles lining the blood vessels in the penis, allowing them to dilate and increase blood flow. However, PDE5 breaks down cGMP, leading to reduced blood flow and difficulty in maintaining an erection.

Viagra blocks PDE5, allowing cGMP levels to remain elevated, resulting in prolonged vasodilation and improved erectile function. Its effectiveness typically lasts for four to six hours, providing a window of opportunity for sexual activity. Understanding the mechanism behind Viagra's magic empowers individuals to make informed decisions about its usage and potential benefits.

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