Wiktionary
a. That brings on a dreamlike mental state; hallucinogenic. (from 20th c.)
Usage examples of "psychodysleptic".
Bridget Boone, in whose room a lot of the 16 and Unders used to congregate before lights-out, invited me to consider a couple of late-night bongs, as a kind of psychodysleptic Sominex, to help me sleep, perhaps, finally, all the way through a really unpleasant dream that had been recurring nightly and waking me up in medias for weeks and was beginning to grind me down and to cause some slight deterioration in performance and rank.
Bridget Boone, in whose room a lot of the 16 and Unders used to congregate before lights-out, invited me to consider a couple of late-night bongs, as a kind of psychodysleptic Sominex, to help me sleep, perhaps, finally, all the way through a really unpleasant dream that had been recurring nightly and waking me up in medias for weeks and was beginning to grind me down and to cause some slight deterioration in performance and rank.