Expressing concern over the alleged use of humans as guinea pigs by pharmaceutical companies, the Supreme Court on Monday directed the Centre to submit details of clinical trials of drugs conducted across the country as well as their side effects and deaths, if any.

A bench of Justices R.M. Lodha and A.R. Dave, asking the Union government to furnish details, also issued notice to all state governments asking if they were kept in the loop on clinical trials conducted in their states.