Zhewitra 60 is used to treat men’s erectile dysfunction trouble. Zhewitra 60 and all other Vardenafil-containing drugs must be taken exactly as prescribed by a physician. Your doctor will evaluate your particular needs and health status in order to determine the proper dosage and provide you with usage instructions. Boosts the Biologic Flow A deficiency of blood flow to the penis is frequently the cause of ankle ischemia. A man's body produces nitric oxide in response to sexual stimulation, which triggers the production of cyclic guanosine monophosphate (cGMP). An erection is defined as increased blood flow into the penis brought on by cGMP-induced blood vessel relaxation.