Psilocybin Laws in Massachusetts

How Massachusetts law treats magic mushrooms (psilocybin), from the state code and official state agencies.

Short answer: Psilocybin and psilocyn are Class C controlled substances in Massachusetts. Possessing them is punishable by up to 1 year in jail and/or a fine of up to $1,000; G.L. c. 94C, §31 (Class C(a)(13)-(14)); G.L. c. 94C, §34

Magic mushrooms (psilocybin)	Psilocybin and psilocyn are Class C controlled substances in Massachusetts. Possessing them is punishable by up to 1 year in jail and/or a fine of up to $1,000; after a prior drug possession conviction (or a drug felony under chapter 94C), the maximum is 2 years in a house of correction and/or a $2,000 fine. Class list: https://malegislature.gov/Laws/GeneralLaws/PartI/TitleXV/Chapter94C/Section31. §34 was amended by St. 2026, c. 65, effective April 19, 2026 (marijuana amounts). Source: G.L. c. 94C, §31 (Class C(a)(13)-(14)); G.L. c. 94C, §34

Magic mushrooms (psilocybin)

Psilocybin and psilocyn are Class C controlled substances in Massachusetts. Possessing them is punishable by up to 1 year in jail and/or a fine of up to $1,000; after a prior drug possession conviction (or a drug felony under chapter 94C), the maximum is 2 years in a house of correction and/or a $2,000 fine.

Class list: https://malegislature.gov/Laws/GeneralLaws/PartI/TitleXV/Chapter94C/Section31. §34 was amended by St. 2026, c. 65, effective April 19, 2026 (marijuana amounts).

Source: G.L. c. 94C, §31 (Class C(a)(13)-(14)); G.L. c. 94C, §34

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FAQ

Are magic mushrooms legal in Massachusetts?

General legal information, not legal advice. Laws change and local rules can differ; check the linked official source or talk to a lawyer about your situation.