Foodstuffs for invalids and babies for medical purposes, food supplements for medicinal or nutritional use, nutritional additives for medical purposes, dietetic food preparations adapted for medical purposes, dietetic food supplements for medical purposes, dietetic foodstuffs for medical use, dietetic substances for babies and invalids, dietetic beverages adapted for medical purposes, food fortifiers for persons with special dietetic needs, dietetic food supplements for persons with special dietetic needs, foodstuffs for invalids on a diet for medical reasons, medicinal food supplements for persons on a diet for medical reasons, mineral dietetic supplements for human consumption, protein-enriched foodstuffs for dietetic purposes for persons suffering from disorders of the digestive system, protein-enriched meal substitutes for medical use for managing metabolic disorders, including phenylketonuria, acute maple-syrup disease and tyrosinemia, fortifying substances for medical use for managing problems of malnutrition