Statewide legal status
Massachusetts classifies psilocybin and psilocyn as Class C controlled substances. Knowing possession remains unlawful unless authorized by law.
MA legal and access quick reference
Reviewed July 22, 2026Psilocybin law and access in Massachusetts
A concise, source-dated explanation of statewide law, regulated access, and the difference between state and local policy.
Laws and implementation can change quickly. This page is educational information, not legal advice.
Programs and services
Massachusetts has no current statewide psilocybin service-center, personal-use, dispensary, or retail program.
Controlled · proposals are not current access
Voters rejected Question 4 in 2024. Bills pending in the 2025–2026 session remain proposals unless they are enacted and implemented.
What local policy means
Massachusetts has documented municipal actions in Cambridge, Northampton and Somerville. Those actions affect local priorities only; they do not create statewide legalization, licensed retail, or medical suitability.
Cities covered by the Massachusetts guide
The statewide explanation above covers Boston, Cambridge, Northampton, Somerville and Worcester. A separate page appears below only where a documented municipal action adds material local context.
BostonCovered in Massachusetts guide
CambridgeDocumented local policyNorthamptonDocumented local policySomervilleDocumented local policyWorcesterCovered in Massachusetts guide
Sources used for this review
The statewide baseline was checked against the Massachusetts controlled-substance and possession statutes. The official ballot record and current bill pages are included to separate rejected or pending proposals from enacted law.
- Massachusetts General Laws — Class C controlled substances (c. 94C, §31) ↗
- Massachusetts General Laws — Unlawful possession (c. 94C, §34) ↗
- Massachusetts Secretary of the Commonwealth — statewide ballot-question results ↗
- Massachusetts Legislature — H.2203 pilot proposal ↗
- Massachusetts Legislature — H.4986 therapeutic-center proposal ↗
- Massachusetts Legislature — S.1113 decriminalization proposal ↗
Common questions
Is psilocybin legal in Massachusetts?
Massachusetts classifies psilocybin and psilocyn as Class C controlled substances. Knowing possession remains unlawful unless authorized by law. Massachusetts has no current statewide psilocybin service-center, personal-use, dispensary, or retail program.
Does Massachusetts have a regulated psilocybin access program?
Massachusetts has no current statewide psilocybin service-center, personal-use, dispensary, or retail program.
Do city policies change Massachusetts law?
No. Cambridge, Northampton, and Somerville actions affect local priorities only. They do not legalize commercial sale, establish statewide access, or override Massachusetts or federal law.
Continue at the right depth
The product-site link provides product-format and business-policy information. It does not change the law described on this page or establish legal access in any jurisdiction.