PROBLEM TO BE SOLVED: To provide a fat emulsion containing prostaglandin, which has improved stability of prostaglandin, excellent emulsion stability, excellent transparency, and long storage life.SOLUTION: A fat emulsion containing prostaglandin is a fat emulsion including a prostaglandin, an oil component, lecithin, a water-soluble acid having a dissociative group with a pKa of 4.0-6.0 or a salt thereof, and water, wherein the content of lecithin is 0.15 or more times the mass of the oil component, and having a pH of 4.5-6.0.COPYRIGHT: (C)2013,JPO&INPIT【課題】プロスタグランジンの安定性を向上させ、乳化安定性に優れ、透明性に優れ、保存期限の長いプロスタグランジン含有脂肪乳剤の提供。【解決手段】プロスタグランジン類、油成分、レシチン、pKaが4.0~6.0の解離基を有する水溶性の酸又はその塩、及び水を含んでなる脂肪乳剤であって、前記レシチンの含有量が前記油成分の0.15質量倍以上であり、かつ、pHが4.5~6.0であるプロスタグランジン含有脂肪乳剤。【選択図】なし
