Vidalista 20 mg contains the active ingredient Tadalafil, which belongs to a class of medications called phosphodiesterase type 5 (PDE5) inhibitors. It is primarily used to treat erectile dysfunction (ED) in men.

Tadalafil works by inhibiting the enzyme PDE5, which is responsible for the degradation of cyclic guanosine monophosphate (cGMP).

When sexual stimulation occurs, nitric oxide is released in the erectile tissue of the penis, which activates the enzyme guanylate cyclase. This, in turn, increases the levels of cGMP, causing the smooth muscles in the penile blood vessels to relax and allowing increased blood flow into the penis.

By inhibiting PDE5, Tadalafil helps to maintain higher levels of cGMP, enhancing the erectile response and enabling a firmer and longer-lasting erection. It is important to note that sexual stimulation is still necessary for the medication to work, as Tadalafil alone does not produce an erection.

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