The Medical Board of Australia has gagged a pro-euthanasia GP, claiming her campaign for assisted-dying reform is undermining confidence in the medical profession.

Dr Alida Lancee has been targeted by the board after being quoted in a series of media articles and appearing on a 60 Minutes show, where she repeated her claims that she administered a lethal injection to one of her patients — Mavis Scott — who at the time was terminally ill with emphysema and suffering intolerable pain not alleviated by morphine.