PROBLEM TO BE SOLVED: To provide self-emulsifying compositions excellent in at least one of the self-emulsification, dispersibility, emulsion stability and absorbability, with no or low ethanol addition.SOLUTION: Provided is a self-emulsifying composition comprising at least one compound selected from the group consisting of &omega；3-polyunsaturated fatty acids, pharmaceutically acceptable salts and esters thereof in a range of 50-95 mass% in total, and an emulsifier of which hydrophilic-lipophilic balance is 10 or higher in a range of 5-50 mass%, where the composition contains ethanol not more than 4 mass% of the total mass of the compound and the emulsifier.【課題】自己乳化性、組成物分散性、乳化安定性および吸収性の少なくとも１つに優れ、エタノール非添加または添加濃度の低い自己乳化組成物を提供する。【解決手段】ω３多価不飽和脂肪酸、その製薬学上許容しうる塩およびエステルからなる群から選ばれる少なくとも１つの化合物の合計量５０ないし９５質量％の範囲、および親水性親油性バランスが１０以上の乳化剤を５ないし５０質量％の範囲で含有する自己乳化組成物であって、前記化合物と乳化剤の合計質量に対する質量％でエタノール含有量が４質量％以下である自己乳化組成物。【選択図】なし
