An unusual case of metformin associated lactic acidosis.

: Metformin Associated Lactic Acidosis (MALA) is a rare, but serious complications of Type 2 diabetes mellitus treatment with a mortality rate of around 50%. It most commonly occurs in the setting of hepatic, cardiac or renal insufficiency. We report the case of an elderly female with MALA and concomitant starvation ketosis in the absence of any known risk factor, who went undiagnosed for a period of at least a month and made a complete recovery in the hospital.