Self-emulsifying composition of ω3 fatty acid

A capsulated self-emulsifying preparation having a self-emulsifying composition held in a capsule as a liquid content, with the self-emulsifying composition comprising, when the self-emulsifying composition is defined to be 100% by weight as a whole,

• a) 70 to 90% by weight of at least one compound selected from the group consisting of ω3 polyunsaturated fatty acids and their pharmaceutically acceptable salts and esters,
• b) 0.5 to 6% by weight of water, and
• c) 1 to 29% by weight of an emulsifying agent including either
• i) a polyoxyethylene sorbitan fatty acid ester or
• ii) at least two members selected from the group consisting of a sorbitan fatty acid ester, a glycerin fatty acid ester and a polyoxyethylene castor oil, or
• 1 to 29 % by weight of an emulsifying agent including
• i) a polyoxyethylene sorbitan fatty acid ester and
• ii) at least one member selected from the group consisting of a sorbitan fatty acid ester, a glycerin fatty acid ester and a polyoxyethylene castor oil,
• and having
• d) an ethanol content which is up to 4% by weight of the whole composition, and
• e) a polyhydric alcohol content which is up to 4% by weight of the whole composition,
• wherein the capsule is a hard capsule and/or a soft capsule,
• wherein the composition is free from separation and cloudiness and maintains good appearance when stored at a temperature of 5° C. for 12 hours or at a temperature of 40° C. for 12hours.