Of nonfat milk or soymilk and enjoy! ® to complete the Herbalife Core Cellular Nutrition program. Herbalife products do not treat diabetes, but diabetics can use them. With a dense mix of protein, carbs, fiber and essential vitamins and minerals, Formula 1 is everything you need in a glass, is suitable for diabetics and, with over 10 flavors to choose from, it’s easy to customize for your taste and nutritional needs.