Compositions comprising 2-((5Z,8Z,11Z,14Z,17Z)-icosa-5,8,11,14,17-pentaenyloxy)butanoic acid, an ester derivative, or a pharmaceutically acceptable salt thereof; a triglyceride; and a surfactant, as well as methods for their use. The present disclosure further relates to self-emulsifying drug delivery systems, such as SEDDS, SMEDDS, or SNEDDS comprising 2-((5Z,8Z,11Z,14Z,17Z)-icosa-5,8,11,14,17-pentaenyloxy)butanoic acid.本發明關於一種包含2-((5Z,8Z,11Z,14Z,17Z)-二十-5,8,11,14,17-五烯氧基)丁酸、酯衍生物或其藥學可接受之鹽;三酸甘油酯及界面活性劑的組成物,以及使用該等組成物之方法。本發明另外關於自乳化(self-emulsifying)藥物遞送系統,諸如包含2-((5Z,8Z,11Z,14Z,17Z)-二十-5,8,11,14,17-五烯氧基)丁酸之SEDDS、SMEDDS或SNEDDS。