Cenforce 25 mg works by blocking the PDE5 enzyme, which normally breaks down a chemical called cyclic guanosine monophosphate (cGMP). During sexual arousal, nitric oxide increases cGMP levels, relaxing blood vessels in penile tissue. This allows more blood flow into the penis, supporting a natural erection response when stimulated. It usually begins working within 30 to 60 minutes after taking it. The effects typically last for about 4 to 6 hours, depending on the individual, food intake, and overall health.

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