The present invention provides a preparation for injection containing a lipid A analog and a process for preparing the same. A preparation for injection prepared by dissolving a lipid A analog or a pharmacologically acceptable salt thereof in an alkaline aqueous solution, at an elevated temperature if necessary, and then adding a buffer thereto, and a process for preparing the same.
This application is the national phase under 35 U.S.C. .sctn.371 of prior PCT International Application No. PCT/JP97/02316 which has an International filing date of Jul. 3, 1997 which designated the United States of America.
