npr.org popular Jan 30, 12 09:17 pm — Currently, there's no quick fix for severe depression. Antidepressants usually take weeks to work, if they work at all. But patients who received experimental doses of ketamine long used as an anesthetic, and an illegal club...
MacThulhu
It also prevents 70% of the damage done by an ischemic stroke if it's given immediately when they show up t the ER.