Ensure® Prebiotics Powder Chocolate 400g is the number 1 doctor recommended adult nutritional supplement¹ and a convenient nutritional shake that is scientifically designed to provide essential nutrients. It is a supplemental source of nutrition that can be used as a meal replacement that is free of gluten and lactose. Ensure® contains 21 Vitamins and minerals and is high in omega 3. It is a source of protein, calcium and prebiotics. This product is not for use in galactosaemia. Available in 400g and 850g in 3 delicious flavours - vanillia, strawberry and chocolate.