Megalis 20 mg is a medication containing Tadalafil, commonly prescribed for treating erectile dysfunction (ED) in men. It belongs to a class of drugs called phosphodiesterase type 5 (PDE5) inhibitors. Tadalafil helps increase blood flow to the penis during sexual stimulation, enabling an erection. Tadalafil works by blocking the PDE5 enzyme, which breaks down cyclic guanosine monophosphate (cGMP). By preventing this breakdown, cGMP levels remain elevated, relaxing the smooth muscles in penile blood vessels and improving blood flow.
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