1 Isomaltulose is a source of glucose and fructose. Made in a plant that manufactures milk, egg, gluten, soy, peanuts, nuts, celery, fish, crustacean and sulphur dioxide containing foods. The product is composed exclusively of protein sources of animal origin - with the exception, of course, of various flours, which are not treated as protein sources - which not only contain all the essential amino acids, but also have a ratio of essential amino acids that is perfectly adapted to human needs.