Psilocybin law in Indiana
Illegal Checked 26 October 2026
Psilocybin is illegal in Indiana: it is a Schedule I controlled substance under IC 35-48-2-4, and possession is a Class A misdemeanor, though a 2024 law created a state fund for psilocybin 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 as hallucinogenic substances in Schedule I, Ind. Code 35-48-2-4(d). [Indiana Code 35-48-2-4, Schedule I (current as of January 1, 2026), FindLaw (reproduction of Indiana Code), 2026-01-01, read 26 October 2026]
What the law says
- House Enrolled Act 1259 (Public Law 152-2024), signed 13 March 2024, established the therapeutic psilocybin research fund, administered by the Division of Mental Health and Addiction, to give financial assistance to Indiana research institutions studying psilocybin to treat mental health and other medical conditions. [House Bill 1259 (2024), Health care matters, Indiana General Assembly, 2024-03-13, read 26 October 2026]
- HB 1166 (2025), which would have appropriated state money to the therapeutic psilocybin research fund, was referred to the House Ways and Means Committee and did not advance. [House Bill 1166 (2025), Appropriation for psilocybin research, Indiana General Assembly, 2025-01-28, read 26 October 2026]
Penalties
- Knowingly possessing a Schedule I controlled substance (other than marijuana, hashish or salvia) without a prescription is possession of a controlled substance, a Class A misdemeanor, or a Level 6 felony if an enhancing circumstance applies (Ind. Code 35-48-4-7(a) and (b)). [Indiana Code 35-48-4-7, Possession of a controlled substance (current as of January 1, 2026), FindLaw (reproduction of Indiana Code), 2026-01-01, read 26 October 2026]
Bills
HB 1166 2025
Appropriation for psilocybin research
Would have appropriated money from the state general fund to the therapeutic psilocybin research fund.
Status: Referred to House Ways and Means 8 January 2025; died at end of 2025 session, 8 January 2025
HB 1259 2024
Health care matters
Established the therapeutic psilocybin research fund and set clinical study requirements for grant recipients.
Status: Signed 13 March 2024 (Public Law 152), 13 March 2024
Dated changes
- 8 January 2025: Would have appropriated money from the state general fund to the therapeutic psilocybin research fund. Status: Referred to House Ways and Means 8 January 2025; died at end of 2025 session. Source
- 13 March 2024: Established the therapeutic psilocybin research fund and set clinical study requirements for grant recipients. Status: Signed 13 March 2024 (Public Law 152). Source
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