Policy Tracker · Psilocybin · United States
Is psilocybin legal in Washington?
No — psilocybin is illegal in Washington.
Recorded status
Prohibited
Prohibited: psilocybin and ibogaine remain illegal under Washington law. Both tracked bills (SB 5921 and SB 5201) died when the 2026 session ended.
Psilocybin remains a Schedule I substance under US federal law regardless of state rules.
Source
PoliPsy legislation tracker · polipsy.dev
Full details for subscribers
Quoted law sections, penalties and thresholds, bill progress, year-by-year timeline and clinical trials for Washington are free with a PSA newsletter subscription.