The present invention provides a pharmaceutical composition comprising a compound represented by the formula (I): wherein each symbol is as defined in the description, or a salt thereof, in combination with a dipeptidyl peptidase IV inhibitor, an insulin preparation, a PPAR function modulator, an ±-glucosidase inhibitor, a biguanide, a sulfonylurea, mitiglinide or calcium salt hydrate thereof or nateglinide.
