Ensure Clear nutrition drink is a fat-free nutrition drink that is a suitable choice for people on clear liquid diets. It is a great-tasting refreshing nutrition drink that comes in 2 fruit flavors. Ensure Clear contains 8 grams of protein and 15 essential vitamins and minerals to help you stay strong on the inside and achieve your health goals. From Ensure the #1 doctor-recommended brand.* * Among doctors who recommend liquid nutritional products to their patients.