Vidalista 40 mg works by inhibiting the enzyme phosphodiesterase type 5 (PDE5). This enzyme normally breaks down cyclic guanosine monophosphate (cGMP), which helps relax smooth muscle and increase blood flow to the penis. By blocking PDE5, Vidalista 40 mg helps maintain higher levels of cGMP, leading to improved blood flow to the penis and facilitating an erection in response to sexual stimulation.
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