The invention relates to a terapeutical composition comprising a protein hydrolysate and a plant sterol, wherein the weight ratio of the plant sterol to the protein hydrolysate is from 1:0.02 to 1:150. The invention also relates to a terapeutical composition comprising a protein hydrolysate and a synthetic emulsifier and/or a lipid based grain fraction having emulsifying properties. Said compositions can be used in a pharmaceutical, nutraceutical or food product for improving serum lipid profile.