The old saw is that the dose makes the poison. If small amounts of the stuff, administered continuously, have a scientifically proven therapeutic use under proper care of physicians, that isn’t the same as shooting or popping a single huge dose of the junk. I don’t imagine this would be used on everybody, but only for acute suicidal cases. It probably beats electroshock all hollow for lack of harmful side effects.
Researchers synthesizing the drug...http://www.vice.com/read/interview-with-ketamine-chemist-704-v18n2