GNC Mega Men® Diabetic Support is a multivitamin and nutrition plan that contains nutrients that help with insulin production and glucose utilization. Specially formulated to help men with diabetes maintain overall health and well-being, this GNC diabetic multivitamin contains nutrients that can help with circulation and eye health. GNC Mega Men Diabetic Support caplets provide ginkgo biloba and arginine that aid healthy circulation. Vitamin B in the caplets can aid energy production. Muscles are fueled by the inclusion of glutamine, carnitine and leucine in the caplets.