The present invention provides: a compound represented by general formula (I) below, 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, and the like; and a drug composition containing the compound. General formula (I) (in the formula: ring A represents a pyridine ring; ring B represents a tetrazole ring or an oxadiazol-5 (4H) -one ring; X represents C-R 5 or a nitrogen atom; R 1 represents an alkyl group; R 2 represents an alkyl group or a cycloalkyl group; and R 3 , R 4 , and R 5 each independently represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group or similar.