Foods for invalids and infants for medical purposes, namely, medicinal food supplements for nutritional purposes; nutritional supplements for medical use; dietary food preparations, namely, dietary and nutritionally fortified food products adapted for medical use; dietary food supplements for medical use; dietetic food and beverages, namely dietary nutritionally fortified bars, gels, powders, drinks and drink mixes, all adapted for medical purposes; dietetic beverages adapted for medical purposes; medicated supplements for fortifying foodstuffs adapted for medical purposes for persons with special dietary requirements; invalids' foods, namely, dietetic foods adapted for medical purposes for persons with special dietary requirements due to a medical condition; medicated foodstuffs, namely, medicated supplements for foodstuffs for persons with special dietary needs due to a medical condition; protein foods for dietetic purposes, namely, protein reduced food for medical purposes for persons with a disorder of the digestive system; protein substitutes, namely, amino acid based nutritional supplements in powder, liquid and gel form for medical use for the management of metabolic disorders, including, phenylketonuria, maple syrup urine disease and tyrosinemia