Complete, balanced nutrition. Artificial flavor. Helps promote digestive system health. 24 Essential vitamins & minerals, lactose free. No. 1 nutritionist recommended (among fiber-added nutritional shakes). The complete, balanced nutrition of Ensure Fiber helps promote digestive system health. Lactose and gluten free. It can be difficult to eat healthy every day. That's why we created delicious Ensure shakes to help you stay healthy, active, and energetic. Ensure is a nutritionist-recommended shake and is loaded with food energy and 24 vitamins and minerals. Ensure, nutrition for a healthier you. Ensure Fiber is a source of complete, balanced nutrition with fiber to help promote digestive system health. Many Americans do not get enough fiber in their daily diet. While leading health authorities recommend 25 to 30 grams of fiber a day, most of us get only about half that amount. Ensure Fiber is a good source of fiber providing a blend of oat hull fiber, soy fiber, and Fructooligosaccharides (FOS). FOS are soluble fibers found naturally in many foods such as bananas, onions, and garlic.