This is a special drug use surveillance (survey on long-term use) designed to investigate the safety and efficacy of long-term use of pioglitazone/metformin hydrochloride combination tablets (Metact Combination Tablets) in patients with type 2 diabetes mellitus in the routine clinical setting.~The following items will also be studied:~The effects on safety and efficacy caused by changing the administration method of metformin hydrochloride associated with switching to Metact Combination Tablets~The effects on compliance associated with switching to Metact Combination Tablets~Safety and efficacy in patients who showed inadequate response to pioglitazone hydrochloride and were then switched to Metact Combination Tablets~The planned sample size was 1000 participants. The usual adult dosage is one tablet of Metact administered orally once daily after breakfast (15 mg/500 mg or 30 mg/500 mg of pioglitazone/metformin hydrochloride).~<Precautions Related to Dosage and Administration> Edema due to pioglitazone administration has been reported with comparative frequency in women. Therefore, it is preferable to be vigilant for edema and start Metact Combination Tablets at a dosage equivalent to 15 mg of pioglitazone once daily when administering the study drug to women.
The purpose of this study is to investigate the safety and efficacy of long-term use of pioglitazone/metformin hydrochloride combination tablets in the routine clinical setting in patients with type 2 diabetes mellitus for whom therapy with pioglitazone hydrochloride combined with metformin hydrochloride is considered suitable.