[Does synthetic psilocybin]… cause nausea?

Some participants in studies using pure, synthetic psilocybin report nausea as a side effect of their treatment.

This points the finger at [synthetic] psilocybin as a possible cause of nausea… Also, because the body quickly converts psilocybin to its active form psilocin, this suggests that psilocin may play a role in nausea.

Original Article (Psychedelic Science Review):
Why do magic mushrooms cause nausea?
Artwork Fair Use: Samara Muth