A Disgraced Ex-Doctor Says He's Behind the Use of Ketamine to 'Cure' a Child with Autism FDA Warning Letter Roby Mitchell claims that ketamine can cure autism symptoms—and has been boasting on social media that he's persuaded a family to try it on their six-year-old. By Anna Merlan April 9, 2020, 10:00am… Continue reading A Disgraced Ex-Doctor Says He's Behind the Use of Ketamine to 'Cure' a Child with Autism