Spotlight: Ketamine Psychedelic Therapy: Review of the Results of Ten Years of Research (Krupitsky & Grinenko, 1997)
"We have been working with KPT since 1985 and have already treated with KPT more than 1000 alcoholic patients without any complications like protracted psychoses, flashbacks, agitation, or ketamine abuse. So, KPT seems to be safe and effective method of treatment of alcohol dependence."

http://whale.to/a/KPT-Review-of-the-results-of-Ten-Years-of-research.pdf