• Joseph F Merola, April W Armstrong, Sharon Phares, Steven Hass, Esther Yi, Dhaval Patil, and Mark Lebwohl.
• Brigham and Women's Hospital, Harvard Medical School, 75 Francis St, Boston, MA 02115. Email: jfmerola@bwh.harvard.edu.
• Am J Manag Care. 2022 Nov 1; 28 (11): e417e425e417-e425.

ObjectivesNonmedical switching (NMS) is a change in a patient's treatment regimen for reasons other than lack of efficacy, intolerance, adverse effects, or poor adherence. We describe the impact of NMS on patients, health care workers, and health systems, focusing on NMS to in-class biologic alternatives in US patients with chronic, immune-mediated rheumatic and dermatologic conditions. Additionally, we evaluate the ways in which the COVID-19 pandemic may exacerbate the physical, psychological, and economic impacts of NMS.Study DesignNarrative review.MethodsWe performed a search of MEDLINE's PubMed database from October 2015 to October 2020, with a repeat search in October 2021. Search terms included relevant keywords pertaining to NMS, biologics, and disease areas. Results were supplemented by a search of key congress abstracts from 2015 to 2021 and a targeted internet search.ResultsNMS increases medication abandonment, errors, and adverse effects, and it can lead to longer patient visits, increased follow-up visits, additional laboratory tests and procedures, and greater overall health care resource utilization (HCRU). The increased HCRU associated with NMS increases patients' financial burden due to additional co-pays and out-of-pocket costs.ConclusionsThe decision to switch treatments should result from shared decision-making between health care providers (HCPs) and patients to achieve the best clinical outcomes and optimal HCRU. The issues related to NMS may be compounded by the financial and psychosocial stress on HCPs and patients created by the COVID-19 pandemic. HCPs should advocate for continuous patient treatment and be familiar with continuity of care legislation, appeals processes, and manufacturer assistance programs.

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