The present invention provides a pharmaceutical composition for preventing or treating hyperlipidemia comprising (4S 5R) 5 [3 5 bis(trifluoromethyl)phenyl] 3 ({2 [4 fluoro 2 methoxy 5 (propan 2 yl)phenyl] 5 (trifluoromethyl)phenyl}methyl) 4 methyl 1 3 oxazolidin 2 one or its pharmaceutically acceptable salt and an angiotensin II receptor blocker as active ingredients.