Psychotropic or psychedelic? I very much doubt Psilocybin containing mushrooms are a problem on skid row compared to meth, heroin, and cocaine. They arent even addictive.
Psychelic compounds are just as bad to someone whose brain has been eaten away from psychotropic drugs or narcotics, and are known to trigger schizophrenia-family of disorders in individuals with latent susceptibility. Marijuana, for example, is only mildly psychotropic but triggers schizophrenic episodes in individuals with schizophrenia...