A drug imported from Tamil Nadu to treat diabetes patients have found with some blackish substance similar to a fungus developed on the tablet.

The brand ‘Metformin," manufactured by Kausikh Therapeuticals (P) Ltd in Tamil Nadu was found with the black substance on it.

Medical practitioners in the Western Province have informed Director General Health Services (DGHS) of the possible dangers of ‘Metformin, brand in this condition and has asked for an immediate inquiry.

Samples of the drug have been sent to the National Drug Quality Assurance Laboratory (NDQAL) for testing.