Pharmaceutical and veterinary preparations to treat diseases of the nervous system, infectious diseases, neoplasms, diseases of the immune system, endocrine and metabolic diseases, diseases of the circulatory system, diseases of the eye; diagnostic preparations to diagnose diseases of the nervous system, infectious diseases, neoplasms, diseases of the immune system, endocrine and metabolic diseases, diseases of the circulatory system, diseases of the eye; food for medically restricted diets