What makes something psychedelic? What happens in the brain? Here we discuss the preparation, integration, benefits, and side effects of working with psychedelic medicines. 

Links: 

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4813425/

https://www.sciencedirect.com/science/article/pii/S1053811920304663?via%3Dihub