Yadav made the statement after being repeatedly questioning by newspersons about the abysmal state of government hospitals in Bihar.
The world's second-largest drug maker, GlaxoSmithKline (GSK), is making India a major manufacturing hub for its free global drug supply to treat neglected diseases.
About 200 children were taken to hospitals in Bihar, Rajasthan, Haryana and Chhattisgarh as they complained of uneasiness after being administered deworming tablets.