Psilocybin law in Connecticut
Illegal Checked 26 October 2026
Psilocybin is illegal in Connecticut: it is a Schedule I controlled substance under Conn. Agencies Regs. 21a-243-7, and possession is a class A misdemeanor, though a state pilot program provides psilocybin-assisted therapy through FDA-approved research.
Psilocybin is a controlled substance with no lawful route for retreats or personal use. Some of these states fund research or trials. A summary of published sources, not legal advice.
Source status: Research only. Psilocybin remains a Schedule I drug under US federal law.
Scheduling
Psilocybin and psilocyn are listed in Schedule I of the Connecticut controlled substance regulations, Regs. Conn. State Agencies 21a-243-7(c)(32) and (33). [Regulations of Connecticut State Agencies Sec. 21a-243-7, Controlled substances in schedule I, Connecticut eRegulations System (Department of Consumer Protection), 2026-05-13, read 26 October 2026]
What the law says
- Connecticut runs a psychedelic-assisted therapy pilot program in the Department of Mental Health and Addiction Services, administered by a medical school (currently Yale University), in which participants receive MDMA- or psilocybin-assisted therapy as part of an FDA-approved research program. [Public Act Summary, PA 26-108 (SB 191), Connecticut Office of Legislative Research, 2026, read 26 October 2026]
- Public Act 26-108 (SB 191), signed 4 June 2026 and effective 1 July 2026, opens the pilot to Connecticut residents aged 18 or older who meet clinical criteria; previously it was limited to veterans, retired first responders and direct health care workers. [SB 191 (2026), An Act Concerning the Psychedelic-Assisted Therapy Pilot Program, bill status, Connecticut General Assembly, 2026-06-04, read 26 October 2026] [Public Act Summary, PA 26-108 (SB 191), Connecticut Office of Legislative Research, 2026, read 26 October 2026]
- HB 7065, which would have decriminalized possession of small amounts of psilocybin, passed the House on 19 May 2025 but was not taken up by the Senate. [HB 7065 (2025), An Act Concerning the Decriminalization of Possession of Small Amounts of Psilocybin, bill status, Connecticut General Assembly, 2025-05-20, read 26 October 2026]
Penalties
- Possessing any quantity of a controlled substance other than cannabis without authorization is a class A misdemeanor for a first offense (Conn. Gen. Stat. 21a-279(a)(1)). [Conn. Gen. Stat. Chapter 420b, Sec. 21a-279, Connecticut General Assembly, read 26 October 2026]
Bills
SB 191 2026
An Act Concerning the Psychedelic-Assisted Therapy Pilot Program
Expands eligibility for the DMHAS psilocybin and MDMA therapy pilot to residents 18 and older and removes its automatic end on DEA approval.
Status: Signed 4 June 2026 (Public Act 26-108), effective 1 July 2026, 4 June 2026
HB 7065 2025
An Act Concerning the Decriminalization of Possession of Small Amounts of Psilocybin
Would have decriminalized possession of small amounts of psilocybin.
Status: Passed House 19 May 2025; placed on Senate calendar 20 May 2025; died at end of session, 20 May 2025
HB 5456 2025
An Act Allowing the Use of Psilocybin for Medicinal and Therapeutic Purposes
Would have allowed psilocybin use for medicinal and therapeutic purposes.
Status: Referred to Public Health Committee 17 January 2025; died in committee, 17 January 2025
HB 6380 2025
An Act Decriminalizing the Possession of Psilocybin
Would have decriminalized possession of psilocybin.
Status: Referred to Judiciary Committee 23 January 2025; died in committee, 23 January 2025
SB 855 2025
An Act Concerning Funding for the Psychedelic-Assisted Therapy Pilot Program
Would have appropriated funding for the psychedelic-assisted therapy pilot program.
Status: Referred to Appropriations Committee 22 January 2025; died in committee, 22 January 2025
Dated changes
- 4 June 2026: Expands eligibility for the DMHAS psilocybin and MDMA therapy pilot to residents 18 and older and removes its automatic end on DEA approval. Status: Signed 4 June 2026 (Public Act 26-108), effective 1 July 2026. Source
- 20 May 2025: Would have decriminalized possession of small amounts of psilocybin. Status: Passed House 19 May 2025; placed on Senate calendar 20 May 2025; died at end of session. Source
- 23 January 2025: Would have decriminalized possession of psilocybin. Status: Referred to Judiciary Committee 23 January 2025; died in committee. Source
- 22 January 2025: Would have appropriated funding for the psychedelic-assisted therapy pilot program. Status: Referred to Appropriations Committee 22 January 2025; died in committee. Source
- 17 January 2025: Would have allowed psilocybin use for medicinal and therapeutic purposes. Status: Referred to Public Health Committee 17 January 2025; died in committee. Source
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