The present invention provides: a novel compound that has both angiotensin II receptor antagonism and a PPARγ activation effect and that is useful as a preventative and/or therapeutic agent for high blood pressure, cardiac disease, arteriosclerosis, type-2 diabetes, diabetic complications, metabolic syndrome, and the like； and a drug composition containing the compound. The present invention pertains to the compound represented by general formula (I) (in the formula: ring A represents a pyridine ring； ring B represents a tetrazole ring or an oxadiazole-5(4H)-one ring； X represents C-R
