Ketamine-assisted psychotherapy is a process whereby the effects of a dose or multiple doses of ketamine are accompanied by psychotherapy. This process generally has two approaches: the first includes sessions whereby a mild, sub-psychedelic dose of ketamine is used as a kind of catalyst for the psychotherapeutic process; that is, it facilitates dialogue between the individual and their therapist. Ketamine-assisted psychotherapy can also refer to a therapeutic process that involves longer immersive sessions whereby a full psychedelic dose of ketamine is administered for the purposes of a more internal, visionary experience. These sessions are typically accompanied by a number of preparatory and integration sessions.