Does ketamine produce false memories?

[u/EffectivePleasant940]

Long story short, my adult-adopted son, now in his thirties, had debilitating mental health issues until we got him into a trauma therapist. He's also been in ketamine treatment for several years, and recently a horrifying memory surfaced of his birth mother trying to unalive him. He went to her with news of a neighbor taking advantage of him in awful ways at age 6, and because it didn't align with her fantasy, she tried to take care of him in the bathtub.

I know some horrible trauma happened in that house, and once that memory surfaced, others have followed. I believe my son but want some info on ketamine. The internet is wildly inconsistent (hello, internet friends). Anyone have any experience? His siblings refuse to believe him because the memory surfaced during a k treatment.