not sure if i can wrap my brain around this notion of separating hallucination from psychedelics ... i'll spend an hour trawling for articles that might offer some perspective, even clarity ...

https://www.theguardian.com/science/2021/apr/28/non-hallucinogenic-psychedelics-scientists-close-in-on-compound

https://www.nature.com/articles/s41586-020-3008-z

https://en.wikipedia.org/wiki/Psychedelic_drug

https://en.wikipedia.org/wiki/Hallucinogen

https://www.technologynetworks.com/neuroscience/news/new-psychedelic-drug-could-treat-addiction-and-depression-without-hallucinations-344072

https://academic.oup.com/schizophreniabulletin/article/46/6/1396/5908041

https://goop.com/wellness/health/the-science-and-shamanism-of-psychedelics/

https://psychologycompass.com/psychedelics/

https://www.quantamagazine.org/a-math-theory-for-why-people-hallucinate-20180730/

https://ajp.psychiatryonline.org/doi/10.1176/appi.ajp.2019.19010035