Tests on cough syrups made in India that are thought to be connected to the deaths of close to 70 children in The Gambia revealed no contamination.
Initial testing of four products revealed unacceptable levels of potentially toxic chemicals, according to the World Health Organization.
Following the administration of the drugs made by Maidan Pharma and exported to The Gambia, the children passed away from acute kidney failure.
Maiden Pharmaceuticals says it adheres to internationally recognised quality-control standards.
But some of its products have failed to meet national or state-level quality-control standards in India.
India produces a third of the world’s medicines, mostly in the form of generic drugs.