One may wonder how Penegra improves erection. Furthermore, sildenafil mode of action is quick and simple to use. sildenafil , the primary component of this medication, begins to act 30 to 60 minutes after a dose is taken (or sooner, contingent upon sexual stimulation).
When a man is sexually aroused, sildenafil activates and starts vasodilation. It not only stimulates the cGMP enzyme cycle but also prevents its disintegration.