Oregon Measure 109: How Licensed Psilocybin Services Actually Work
What Oregon's Measure 109 is, who can legally access psilocybin, and what happens at a licensed service center.
What Measure 109 is
In November 2020, Oregon voters passed Ballot Measure 109, creating the country's first regulated framework for supervised adult psilocybin use. The program is run by Oregon Psilocybin Services (OPS) inside the Oregon Health Authority.
OPS licenses four types of businesses: service centers (where clients consume psilocybin), manufacturers (who grow and prepare it), testing labs, and facilitators (the people who supervise sessions).
What it is not
Measure 109 is not legalization in the recreational sense. You cannot buy psilocybin to take home. You cannot consume it outside a licensed service center. Possession outside the program is still a Class E violation under state law.
Who can participate
- You must be 21 or older.
- You do not need a medical diagnosis or a prescription.
- You do not need to be an Oregon resident.
- You complete a preparation session with a licensed facilitator before the administration session.
What a session looks like
- Preparation — at least one meeting with your facilitator to discuss intention, medical history, and what to expect.
- Administration — you consume a measured dose of psilocybin at a licensed service center and stay on site, supervised, for the full duration (typically 4–6 hours).
- Integration — an optional follow-up session to help you make sense of the experience.
We walk through this in more detail in What actually happens at a licensed psilocybin healing center.
What it costs
Sessions in Oregon currently range from roughly $1,500 to $3,500 depending on dose, group vs. individual, and the service center. Insurance does not cover psilocybin services.
How to verify a center is licensed
Oregon publishes a public OPS Licensee Directory and a license-status lookup. Mushy Guide only lists Oregon service centers that appear in that directory.
Questions & answers
5 answeredThe most common questions we hear on this topic.
Is psilocybin legal in Oregon?
Only inside the Measure 109 program. Adults 21+ can consume psilocybin at a licensed service center, supervised by a licensed facilitator. Possession or sale outside the program remains illegal under state and federal law.
Do I need to live in Oregon to participate?
No. There is no residency requirement. Many clients travel from out of state for a session.
Do I need a doctor's referral or diagnosis?
No. Measure 109 is not a medical program. You complete a screening with the facilitator, but no prescription or diagnosis is required.
How much does an Oregon psilocybin session cost?
Roughly $1,500–$3,500 depending on dose, individual vs. group, and the service center. Insurance does not cover sessions.
How do I confirm a service center is actually licensed?
Check the Oregon Health Authority's OPS Licensee Directory linked above. Mushy Guide only lists centers that appear in that directory.