Dietetic food and beverages adapted for medical use or designed as dietetic supplements for medical use, including gluten-free, low in gluten, lactose-free and/or low in protein food and drink, particularly preparations made from cereals, oat flakes, bars, snacks, non-alcoholic beverages, energy drinks, fruit juices, fruit syrups, vegetable juices, non-alcoholic beverages; food supplements and nutritional supplements for human beings, particularly for athletes; food for babies