Tadalis SX 20 mg works by inhibiting the phosphodiesterase type 5 (PDE5) enzyme, which is responsible for regulating blood flow in the penis. In the presence of sexual stimulation, nitric oxide is released, which promotes the production of cyclic GMP. This compound relaxes the smooth muscles in the blood vessels of the penis, enhancing blood flow and allowing an erection to occur. By inhibiting PDE5, Tadalafil helps to maintain the levels of cyclic GMP, ensuring that the blood vessels remain relaxed and that the penis receives sufficient blood flow during sexual activity.

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