Does psilocybin work for rheumatoid arthritis?
More information: Psilocybin as an anti-inflammatory | Psilocybin

Yes, psilocybin may potentially help with rheumatoid arthritis thanks to its anti-inflammatory properties. Research has shown that psilocybin can reduce the production of key inflammatory markers such as TNF-α, IL-6, and CRP. These substances are directly involved in the inflammatory processes characteristic of autoimmune diseases such as rheumatoid arthritis.
On this page about psilocybin and inflammation This mechanism is discussed in detail. Psilocybin appears not only to have an anti-inflammatory effect but also to have a positive effect on the brain, for example by reducing glutamate in the hippocampus. This can contribute to better emotional balance and stress reduction, which in turn also influences inflammation levels.
Some people even claim that after regular use of psilocybin, they can go into remission of a rare form of arthritis. While this is not scientific proof, it does underscore the potential of psilocybin as an adjunctive treatment.