Sean T. McAllister is an attorney specializing in the regulatory, health care, business, and religious freedom aspects of psychedelic medicines and therapies, including ketamine.

His work in psychedelics has included: Advising doctors, therapists and licensed professionals on psychedelic-assisted therapy, including defense of licensure in disciplinary proceedings; Advising clients looking to obtain a religious exemption for the use of psychedelics; Drafter of Colorado’s Proposition 122 Natural Medicine Health Act; Denver Psilocybin Mushroom Policy Review Panel; General Counsel for the Zendo Project; Board of Directors for the Chacruna Institute; and Board of Directors of the Board of Psychedelic Medicine and Therapies. Sean is licensed to practice law in Colorado and California.