NEW DELHI (Reuters) -Police in India have launched criminal action against a maker of cough syrup whose product was found to contain dangerous levels of a toxic chemical, after the deaths of 10 children suspected to have consumed contaminated medicine. Known as the "pharmacy of the world", India has faced scrutiny for the quality of its pharmaceutical exports, with its cough syrups being linked to child deaths in Cameroon, Gambia and Uzbekistan over the past few years. A sample of the syrup, 'Coldrif', among 19 medicines tested after the deaths in Madhya Pradesh state, contained 46.28% diethylene glycol, far exceeding a permitted level of 0.1%, a state drug laboratory said in a report seen by Reuters.