The present invention provides a pipecolic acid derivative-containing liposome
preparation having has an excellent rapid action capable of coping with an emergent
situation such as cerebral infarction.
A liposome preparation characterized by comprising, as an active ingredient, a
pipecolic acid derivative of the ingredient described in the present specification
or a pharmaceutically acceptable salt thereof entrapped into liposomes, wherein
lecithin is mainly used as the liposome-forming lipid, said liposome preparation
containing no cholesterol as a stabilizer.