These products add enough protein, carbohydrates, fats, salts and vitamins to the human milk to meet the baby’s needs. Such fortifiers have been in use for over 30 years. While they are generally believed to be safe, some pediatricians, neonatologists, and dietitians have serious reservations about them. In the USA there is an ongoing mass action lawsuit where parents claim that their preterm babies developed a life threatening complication, necrotising enterocolitis, as a result of conventional fortifier use.