Dartiu Xavier da Silveira is a well-known Brazilian psychiatrist, professor at Unifesp’s Escola Paulista de Medicina. In his four decades of experience, he has developed an academic and clinical career focused on addiction and substance abuse treatments. At the same time, he became a pioneer in research with ayahuasca, psilocybin, ibogaine and MDMA in Brazil, having participated in some of the main studies with these substances in the country, including clinical trials with MDMA and observational studies with ibogaine. He is a member of the American Psychiatry Association, the International Association for Analytical Psychology, and a research fellow at the University of California (UCLA). In the early 2000s, in collaboration with Charles Grob (UCLA), he carried out a series of safety studies on ayahuasca. As a consultant, he coordinated the work group of the National Secretariat for Drugs that guided the sanction of the religious use of ayahuasca in the country. Currently, he coordinates two studies with psilocybin at Unifesp.

40 years of clinical experience in psychiatry, with a focus on addiction and substance abuse.

Associate Professor at the Department of Psychiatry at the Federal University of São Paulo (UNIFESP/EPM).

Collaborating Researcher at UCLA.

Coauthor of a series of ayahuasca safety studies in the 2000s.

Coordinator of the research center on psychedelics at UNIFESP and coauthor of dozens of Other studies about psychedelics, including safety studies with ayahuasca, phase 3 studies with MDMA and observational studies with ibogaine.

Founder and director of Proad, Program for Guidance and Assistance to Dependents, linked to the Department of Psychiatry at the Federal University of São Paulo (UNIFESP).

Consultant to the National Secretariat of Drugs in the process of regulating the religious use of ayahuasca in Brazil.

Currently conducts two studies at Unifesp about psilocybin for depression.