well, in these studies, we are talking about really low doses. so no, "trip"
The present study focused on changes in brain function before versus after psilocybin in
patients with treatment-resistant depression who received two doses of the drug
(10 mg followed by 25 mg, one-week apart) as part of an open-label clinical trial.
25mg of pure psilocybin, the equivalent of 3.3 - 5 grams of dried mushrooms (depending on strength), is certainly enough for a trip.