New Delhi, Oct. 13 -- The manufacturing licence of Tamil Nadu based Sresan Pharmaceutical company involved in making the adulterated cough syrup Coldrif has completely been revoked, and the company has been ordered to shut down, the state government informed on Monday.

The state Drug Control Department officials had during an inspection found the cough syrup contained 48.6 per cent of Diethylene Glycol (DEG), a toxic substance. This medicine is linked to the death of children in Madhya Pradesh.

The officials had also found that the company lacked proper good manufacturing practices (GMP) and good laboratory practices (GLP), and they recorded over 300 critical and major violations.

The company's owner, G Ranganathan, was recently arrest...