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Sonya C. Faber

University of Ottawa, Angelini Pharma (Italy)

13 papers in the library · 192 citations · publishing 2021-2026

Papers

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Longitudinal peripheral DNA methylation remodeling following ketamine-assisted psychotherapy in major depressive disorder

Epigenetics October 15, 2026 Arghavan Nepton, Sonya C. Faber, Zachary A. Kaminsky et al.

Ketamine produces rapid antidepressant effects, but the molecular processes associated with their persistence remain poorly defined in humans. We examined longitudinal DNA methylation changes in 10 adults with major depressive disorder undergoing ketamine-assisted psychotherapy using two pre-treatment assessments (T1, T2) and one post-treatment assessment (T3). Participants received three...

Sustained abstinence in severe ketamine use disorder following ibogaine treatment case report

Frontiers in Psychiatry July 20, 2026 Sergio Pérez Rosal, Sonya C. Faber, Markus Backmund

Substance use disorders (SUD) involving ketamine, cocaine, and alcohol present significant clinical challenges, often characterized by high relapse rates and limited pharmacological options. This case report details a 30-year-old male with a five-year history of severe polysubstance dependence, including daily intranasal ketamine use (2–3 g/day), cocaine, and alcohol, comorbid with recurrent...

Quantifying psilocybin exposure in a natural product–based retreat setting: An observational field method for dose measurement

Psychedelics July 18, 2026 Sergio Pérez Rosal, Sonya C. Faber

Background In natural product psilocybin retreats, "dose" is commonly defined by grams of dried mushrooms, despite substantial batch-to-batch variability in psilocybin content. This limits safety predictability and undermines reproducibility and between-study comparability. We report an observational field evaluation of an existing, ICH Q2(R1)-validated rapid colorimetric/photometric assay...

DOI: 10.1016/j.psyche.2026.100029 (opens in new tab) Psilocybin Observational study Natural archaeology Field mathematics +1

Changes in trauma symptoms of discrimination after MDMA-assisted psychotherapy for posttraumatic stress disorder.

Scientific Reports July 11, 2026 Monnica T. Williams, Sonya C. Faber, Jordan Sloshower et al.

This preliminary study explored the effects of MDMA-assisted therapy on trauma symptoms related to discrimination, as measured by the Trauma Symptoms of Discrimination Scale (TSDS). A total of five diverse participants, who experienced multiple types of discrimination (e.g., gender, racial/ethnic, social class, age, sexual orientation), were assessed before and after treatment. A paired-samples...

Retreat from Racism: A Psychedelic Group Experience for Racial Stress and Trauma

Psychedelics July 1, 2026 Sergio Pérez Rosal, Sonya C. Faber, M. Myriah MacIntyre et al.

Background Racism and discrimination are pervasive social determinants of health, yet mainstream mental health care often fails to address the psychological sequelae of racial trauma, or race-based traumatic stress (RBTS). While psychedelic-assisted therapy (PAT) has re-entered the scientific mainstream, empirical guidance for culturally attuned, integrative care is limited. This study explores...

DOI: 10.1016/j.psyche.2026.100031 (opens in new tab) Stress linguistics Group periodic table Posttraumatic stress Ethnic group +2

Standardization of Psilocybin Dosing in a Natural Product–Based Retreat Setting: A Practical Method for Dose Quantification and Adjustment Across Sessions

Research Square November 17, 2025 Sergio Pérez Rosal, Sonya C. Faber preprint

Abstract Natural variation in psilocybin content across mushroom samples presents a significant challenge to consistent dosing in both research and retreat settings. In this observational report, we describe a pragmatic approach for quantifying psilocybin content in naturally sourced material to ensure more standardized dosing across participants. Eleven individuals participated in a 7-day...

Wolves Among Sheep: Sexual Violations in Psychedelic-Assisted Therapy.

The American Journal of Bioethics January 13, 2025 Tahlia R. Harrison, Sonya C. Faber, Manzar Zare et al. 22 citations

The integration of psychedelic substances into modern Western therapeutic practice has sparked a critical examination of many topics including: efficacy of psychedelics to treat mental health diagnoses without psychotherapeutic intervention, what models of therapy to use, and ethical implications related to altered states of consciousness. Of utmost concern are issues of power dynamics leading...

DOI: 10.1080/15265161.2024.2433423 (opens in new tab) Patient vulnerability Patient welfare Patient security Professional abuse +10

Expert recommendations for Germany’s integration of psychedelic-assisted therapy

BMC Medical Education October 24, 2024 Susanne Birnkammer, Olga Chernoloz, Sergio Pérez Rosal et al. 10 citations

As clinical trials for psychedelics move into phase III in the USA, Europe must address its lag in integrating professional education around psychedelic-assisted therapy (PAT) and supporting psychedelic drug research. This paper evaluates the necessary frameworks for implementing PAT in Germany, emphasizing the nation's potential leadership role within the European Union. With Australia having...

Expert Opinion on Psychedelic-Assisted Psychotherapy for People with Psychopathological Psychotic Experiences and Psychotic Disorders

International Journal of Mental Health and Addiction April 1, 2024 Joseph T. Torre, Mehdi Mahammadli, Sonya C. Faber et al. 31 citations

Currently, individuals with personal or familial histories of psychopathological experiences of psychosis, psychotic spectrum disorders, bipolar disorder, and similar conditions are excluded from most psychedelic clinical trials, studies, and treatment programs. This study sought to determine why such an exclusion exists, what the implications of the exclusion criteria are, and if there was...

Psychedelics and Racial Justice

International Journal of Mental Health and Addiction April 1, 2024 Monnica T. Williams, Victor Cabral, Sonya C. Faber 22 citations

Psychedelics are being studied for the treatment of numerous mental health disorders, as well as a means of bringing people together. Nonetheless, people of color and those with other marginalized identities have not been fully included. Studies and research on psychedelic-assisted therapies have largely excluded people of color, leaving out fundamental clinical issues for these populations....

Ketamine and epigenetic processes in depression, intersection between serotonergic and glutamatergic pathways

Journal of Psychedelic Studies March 29, 2024 Arghavan Nepton, Hesam Farahani, Monnica T. Williams et al. 2 citations

Abstract Background Hypotheses surrounding the etiology of depressive disorders encompass a wide range of biological changes that can occur in a depressed individual, from gene variations to epigenetic modifications and not only serotonergic mechanisms. Once again, the therapy response of the patient to antidepressants is connected to modifications in the epigenetic regulation of genes within...

The Need for Psychedelic-Assisted Therapy in the Black Community and the Burdens of Its Provision

Frontiers in Psychiatry January 20, 2022 Darron T. Smith, Sonya C. Faber, NiCole T. Buchanan et al. 69 citations

Psychedelic medicine is an emerging field that examines entheogens, psychoactive substances that produce non-ordinary states of consciousness (NOSC). 3,4-methylenedioxymethamphetamine (MDMA) is currently in phase-3 FDA clinical trials in the United States (US) and Canada to treat the symptoms of posttraumatic stress disorder (PTSD). MDMA is used in conjunction with manualized therapy, because...

Racial/ethnic differences in prevalence of hallucinogen use by age cohort: Findings from the 2018 National Survey on Drug Use and Health

Journal of Psychedelic Studies July 15, 2021 Zoe W. Jahn, Joel A Lopez, Sara de la Salle et al. 36 citations

Abstract Background Few studies have assessed the epidemiology of hallucinogenic substance use among racial and ethnic groups of varying age cohorts. Use of psychedelic substances may differ among people of color (POC), due to factors such as stigma and discriminatory drug enforcement practices against POC. The lack of inclusion of POC in psychedelic research further underscores the importance...

DOI: 10.1556/2054.2021.00166 (opens in new tab) Full text (opens in new tab) Ethnic group Demography Population Epidemiology +2