“psycholytic” means “mind loosening,” which is what LSD and psilocybin seem to do—at least at low doses. Therapists who administered doses of LSD as low as 25 micrograms (and seldom higher than 150 micrograms) reported that their patients’ ego defenses relaxed, allowing them to bring up and discuss difficult or repressed material with relative ease. This suggested that the drugs could be used as an aid to talking therapy, because at these doses the patients’ egos remained sufficiently intact to allow them to converse with a therapist and later recall what was discussed.
