Such specialised, ready to use feeds have been commonly used in clinical practice for many years. However, the energy density (1kcal/ml) and the protein content (4g/100ml) of some such feeds have meant that patients are often unable to tolerate the required volumes of feed either orally or via tube to meet their nutritional requirements, which are often elevated by their disease. Therefore, in order to meet the nutritional requirements of patients with poor feed tolerance, a more energy dense (1.5kcal/ml), higher protein (7.5g protein/100ml), nutritionally complete peptide-based feed for oral and tube feeding may be required.