An effective technology? Yes, does more good than harm, according to my test of it.
TvF lists homeopathy at 200, therefore additional context is needed to clarify what is effective and what is not.
"Psilocybin is a naturally occurring psychedelic prodrug compound produced by more than 200 species of fungus." wikipedia
From the iboga plant, "a psychedelic with dissociative properties. Preliminary research indicates that it may help counter drug addiction." wikipedia
"Effects typically include altered thoughts, feelings, and awareness of one's surroundings. Many users have visual or auditory hallucinations." wikipedia
alcohol and alcoholic beverages
100% alcohol, shots, beer, wine, sake, cocktails, social drinking, wine with meal. 14 calibrations total.
"a chemical substance that occurs in many plants and animals and which is both a derivative and a structural analog of tryptamine. It is used as a recreational psychedelic drug and prepared by various cultures for ritual purposes as an entheogen." wikipedia
Psychotropic beverage served up by a shaman. Also, calibration of ayahuasca.