Drink to Your Health with ENSURE Most doctors will tell you that a key to good health is good nutrition. So how can you help guarantee that you and the ones you love get that right nutrition With ENSURE. ENSURE is more than a vitamin supplement. It’s complete, balanced nutrition. ENSURE provides an excellent balance of the protein, carbohydrate, vitamins and minerals you need every day to help stay healthy, be energetic and more active. Drink ENSURE as a healthy meal by itself or as a delicious between-meals snack. ENSURE is even recommended number one by doctors as a complete source of nutrition. What is the basic function of ENSURE It functions as a ______.