WA HB1433

Legalizes regulated access to psilocybin and potentially other psychedelic substances (DMT, ibogaine, MDMA, mescaline after December 31, 2029) for adults 21 and older through licensed service centers and facilitators

Establishes a two-tier licensing system: the Department of Health oversees facilitators, clinical facilitators, and service centers, while the Liquor and Cannabis Board regulates manufacturers and testing laboratories

Creates the Washington Psychedelic Substances Board (11 members) to advise the Department of Health, with a two-year program development period from September 1, 2025 to September 1, 2027, and license applications beginning November 1, 2027

Requires administration sessions to be supervised by licensed facilitators at approved locations (service centers, registered health care facilities, clinical facilitator offices, or client residences with limitations), with mandatory preparation and integration session offerings

Protects licensed participants from state criminal prosecution and adverse professional licensing actions, prohibits employment discrimination based on psychedelic substance use, and preempts local governments from banning licensed establishments except in residential zones