Standardization of Psilocybin Dosing in a Natural Product–Based Retreat Setting: A Practical Method for Dose Quantification and Adjustment Across Sessions
Research Square November 17, 2025 Sergio R. Perez Rosal, Sonya C. Faber
Natural variation in psilocybin content across mushroom samples makes consistent dosing difficult in research and retreat settings. In an observational report, psilocybin content was chemically analyzed rather than inferred from weight, revealing large variability across samples. Eleven individuals participated in a 7-day psilocybin retreat, receiving two doses of psilocybin-containing mushrooms. Standardization based on measured psilocybin concentration allowed for dose adjustments, including a planned increase of the second dose to approximately twice the first to compensate for known acute tolerance effects. This method provides a model for responsible natural product use in community or retreat settings and can inform future translational research.