I looked at the study and it appears that it's 25 mg of synthetic psilocybin. So assuming that's equivalent to 100% psilocybin and mushrooms average around .6%

I looked at the study and it appears that it's 25 mg of synthetic psilocybin. So assuming that's equivalent to 100% psilocybin and mushrooms average around .6% dry then it would be like 4g dry mushrooms.