Ketamine is a World Health Organization Essential Medicine and has been safely used throughout the world since the 1970’s. It is a Food and Drug Administration (FDA) Schedule III medication (the same class as Tylenol with codeine). It is called a “dissociative anesthetic” because ketamine can create a trance-like state where the communication of the senses with the brain is turned down. This state can be profoundly creative, healing, and transformative. In this way, ketamine is considered an atypical psychedelic medicine and is used in psychedelic assisted therapy. Ketamine assisted therapy can bring rapid and durable relief from depression, PTSD, anxiety, addiction, pain, and other suffering.