Introduction: Mass Gathering Medicine (MGM) is a growing field within emergency medicine (EM) and providing care at electronic dance music events (EDMEs) is an increasingly popular activity with MGM groups. Often, health care students are allowed to participate. However, there is a lack of documented curricula to train junior learners in providing medical care at these events. To address this, we developed and initiated an interprofessional, simulation-based workshop for University of Alberta health care students interested in working at EDMEs. Methods: We used Kerns six-step approach to develop the workshops. Our MGM Interest Group identified a need for educational sessions in toxicology case management at EDMEs. A subsequent literature review revealed a paucity of pre-existing curricula on this topic for MGM learners. We created goals and objectives for the workshops, reflecting the knowledge, skills and attitudinal competencies required to provide appropriate medical care at these events. The workshops were implemented and evaluated in November 2016 and 2017. Results: A total of 44 medical and nursing students attended the workshops. An EM resident and staff physician, both with prior experience working at EDMEs, led each session. Each workshop began with a short didactic lecture followed by two hours of case-based training using two standardized patients and a high fidelity simulator. Topics were chosen based on previously published articles describing medical cases seen at EDMEs. The simulation replicated the actual space, noise and equipment available at the medical tents at these events. Two interprofessional learner groups took turns managing a different set of 3 patients: Set 1-opioid overdose (OD), alcohol/vomiting, sympathomimetic OD; Set 2-opioid OD not responsive to naloxone, anticholinergic/seizure, OD with hyperthermia. Initial assessment, medical management and team communication skills were emphasized. Debriefing was provided to learners immediately after each set of cases. After each workshop, the learners completed evaluation forms utilizing both Likert scale and open-ended responses. Overall, students were extremely complimentary about the workshop structure, content and communication skills teaching. They were especially appreciative of the opportunity to participate in their first interprofessional team experience. Conclusion: To address local needs, a well-received simulation-based workshop was created to train students in toxicology case management at EDMEs. Future work will include using this workshop in a just-in-time fashion before upcoming EDMEs and documenting students actual use of skills taught (Kirkpatrick level 3). The workshop will also be further modified to implement more detailed interprofessional objectives and can provide a venue for EM residents to practice teaching interprofessional education competencies as part of their CanMEDS Scholar role.