I've been in psychotherapy for DID mostly continuously since 2011 and I've come a long way. Our system has been stable for years now but really punching through to significant new information and real healing has been much slower for a few years. So with our therapist we decided to try ketamine as an aid during therapy. wikipedia article on KAP
It's an odd process. You take a troche or lozenge and dissolve in the mouth but you don't swallow. Instead, you swish it around with saliva for 15 minutes, then spit it out. It tastes very bitter, kind of metallic, but it wasn't a big deal for me since it has a numbing effect.
From these 15 minutes to an hour after that, the ketamine has strong physical-mental side effects, somewhat hallucinogenic and dissociative but not unpleasant for me, since I knew what was happening and we don't have any uncontrolled switching. During the process one focuses on a particular issue.
Our focus was trying to find out more about a pair of young alters who were threatened to remain silent by the abusive father. They were fairly locked away from us but KAP allowed them to visit therapy and tell us a little about themselves. We didn't even realize one of them was mute, but he's not now. Working with them has felt really nice and healing, with growth continuing outside therapy kind of on its own.
The first session was 50mg, then 75, then 100mg, which I've found is a good amount. The therapist you work with may need to have done KAP themselves and it would certainly help for that to have happened. Mine has had some trainings on it. Although the strongest part of the effects wear off after an hour, the "mind opening" affect stays with you physically for many hours, even a day or two. I wasn't personally aware of that much but my therapist says it's a factor. I know I didn't feel completely normal for a couple hours but I was able to take public transportation home.
I'm going to continue this ketamine-assisted psychotherapy as long as I can. It's not cheap but it's important for me. I saw a specialist to have it prescribed for $375 and the ketamine itself is costing me about $15 per session. I'm not sure how much insurance covers yet. I know that advocacy for the use of certain psychedelics in the treatment of trauma has grown tremendously in recent years. It doesn't seem common for DID but I think it will become more so.
The specialist recommended a KAP session last 2.5 hrs and there be some time afterwards to wind down, but my therapist knows and trusts me. I take a lozenge, then 15 minutes later begin therapy. An hour and a half later (my usual length of a session) and I'm ready to leave. I feel a bit dizzy for another hour as I would if I turned around in circles 3 times, so I walk carefully but no big deal. Just sharing in case this comes up for anyone else.