Kelan Thomas, a psychiatric pharmacist with Touro University in California, is particularly concerned about the interaction of psychedelics with psychiatric medications such as serotonin reuptake inhibitor (SSRI) antidepressants. To address these concerns, Thomas and his colleague Benjamin Malcolm conducted a review of existing literature to evaluate the potential risks of combining psychedelics with psychiatric medications. Their findings, published in the journal Psychopharmacology, have helped us better understand the risks associated with the mixing of psychedelics and antidepressants.