Following trials that showed dexamethasone was effective in treating serious cases of Covid-19, the Health Ministry director-general Dr Noor Hisham Abdullah has advised the public against using the steroid without a doctor’s prescription.

This, he said, is due to the drug’s side effects.

“We have to be careful in terms of usage of this medicine because it has its side effects and complications as well. So the doctors have to actually prescribe this...