A diabetes drug has been recalled because it contains high levels of cancer-causing agent

An Indian pharmaceutical company is recalling some metformin tablets because they may contain higher-than-normal levels of a carcinogen.

(CNN)A widely-used diabetes drug has been recalled after manufacturers found it contained unacceptably high levels of a cancer-causing contaminant.

Indian pharmaceutical company Marksans Pharma Limited is recalling metformin hydrochloride extended-release tablets because their levels of NDMA, a "probable human carcinogen," were higher than the acceptable daily intake limit of 96 nanograms per day, according to a recall published this week by the US Food and Drug Administration (FDA).
Metformin tablets are used to treat type 2 diabetes and are designed to lower glucose levels.