Ensure Compact Nutrition Shake provides the complete, balanced nutrition of Ensure Original in half the size. Perfect for those having difficulty drinking a full shake or looking for a more convenient nutrition option, Ensure Compact provides 9 grams of high-quality protein, 220 calories, and 26 essential vitamins and minerals, in an easy-to-drink 4 fl oz shake. Ensure Compact has the same great taste you expect from Ensure and is available in Milk Chocolate and Vanilla flavors. Survey of 321 independent-living adults aged 50-80 years old, who reported a lack of energy or appetite, added 1-2 servings of Ensure Original daily to their regular diet. Participants self-reported improvements in strength, energy, and activity. 4 fl oz in Ensure Compact compared to 8 fl oz in Ensure Original.