Donna Rosenthal

Donna graduated with a B.A. in Sociology from the University of Toronto in 1967 and completed 3 yrs. of graduate studies in Sociology and Religion at McMaster University in Hamilton, Ontario.

She was certified by Stan & Christina Grof in Holotropic Breathwork and has led Holotropic Breathwork Workshops for 15 yrs. She teaches courses in Mindfulness Based Stress Reduction.

For many years, Donna was  involved in the efforts to legalize the Santo Daime religion and has years of experience screening individuals seeking to participate in group religious ceremonies. The Santo Daime religion uses a psychoactive sacrament called “Daime” (also known as ayahuasca).

She is currently offering Ketamine-assisted psychotherapy. 

Sean O’Sullivan, M.D.

Sean was born in Dublin, Ireland and graduated from medical school in 1968.  During medical school, he did a two year training with the Irish Psychoanalytic Society.  He began a family medicine practice with a strong focus on psychotherapy in 1970.

Sean was certified by Stan and Christina Grof in Holotropic Breathwork in 1987.  He has taught courses in Mindfulness Based Stress reduction.  

For many years, Sean and Donna were  involved in the efforts to legalize the Santo Daime religion in Canada. Sean has a keen understanding of the Santo Daime psychoactive sacrament called “Daime” (also known as ayahuasca).

Sean currently practices Emergency Medicine and has a private psychotherapy practice  that includes the use of non-ordinary states of consciousness occasioned  by Ketamine (currently the only legal psychedelic substance in Canada). 

Sean worked with Dr. Bruce Tobin and his team to move Psilocybin towards legal status in Canada, focusing initially on patients in End Of Life Distress (EODS).