A case in which SGLT2 inhibitor is a contributing factor to takotsubo cardiomyopathy and heart failure.

SGLT2 inhibitors are reported to have advantages in protecting against heart failure events. However, there are also reports of concerns when given to older persons or persons with geriatric syndrome. Our case is an example of a patient with a history of chronic thyroiditis where the SGLT2 inhibitor triggered a thyroid crisis, and blood catecholamine overload caused takotsubo cardiomyopathy and heart failure. .