I have a friend who has severe depression, including self harm and thoughts of suicide. So far guided meditation sessions and antidepressants have had little effect. I have read that some illicit drugs can be effective in treating depression, even after just one or two uses. Can anyone suggest what might be the best option out of ketamine, shrooms, LSD or MDMA?
Ayahuasca, then MDMA.
Ketamine seems to be fast-acting for depression. A proper MDMA session with a therapist and follow up support is looking like a great way to work on things like this. (This is not advice: please don't take advice concerning illegal drugs from random people on the internet)