Washington Senator Prefiles Bill to Create State-Regulated Medical Psilocybin Program

OG article by Anthony Martinelli

December 23, 2025

Washington State Senator Jesse Salomon (D) prefiled a bill for the 2026 session to establish a state-regulated medical psilocybin program under the Department of Health, called the “Washington medical psilocybin act.” It would allow adults 18+ access to psilocybin treatment when a licensed clinician deems it appropriate, focusing strictly on medical use without general adult legalization. Qualifying conditions remain at clinician discretion. The program includes supervised inpatient administration and limited outpatient microdosing, with regulations covering dosage, monitoring, follow-up, training, product standards, security, and recordkeeping. The Department of Health would license clinicians and producers, maintain a confidential registry, and exclude synthetic psilocybin—only naturally derived is permitted. Products dispense directly from clinicians; pharmacies are excluded. Compliant participants, clinicians, and producers gain state prosecution protection, though impaired driving and non-program use remain penalized. If passed, the program would take effect July 1, 2028.