The invention pertains to a liquid complete nutritional composition suitable for feeding cachectic patients, having an energy density of at least 1.45 kcal/ml. The composition comprises a protein fraction in an amount of 7.8-12 g per 100 ml, a carbohydrate fraction, and a lipid fraction. At least 70 wt.% of the protein fraction can be obtained by demineralising milk, e.g. by ultrafiltration. The carbohydrate fraction (17-27 g per 100 ml) can comprise 0-35 wt.% of sucrose, 15-45 wt.% of other non-reducing mono-, di- and/or tri-saccharides, especially trehalose, 5-50 wt.% of other mono-and disaccharides and 5-40 wt.% of tri- and higher saccharides. The product is suitably packaged in small volumes (10-150 ml).
