The Use of Weight Loss Medication in Korea: An Analysis of Prescriptions Voluntarily Posted Online

Abstract

Background: Multiple medications have been used for weight loss (WL); however, research on the regimens of WL treatment in Korea have been limited. This study aimed to characterize the medications prescribed for WL in real-world settings. Methods: The study sample comprised WL prescriptions (Rxs) shared via a portal site for 1 year (from June 2022 to May 2023). WL drugs were classified into four categories: (1) on-label WL drugs; (2) off-label WL drugs; (3) medication-induced symptom management drugs; (4) dietary supplements and others. We calculated prescribing occurrence rates for each category and drugs. Further, we investigated the usage of off-label and psychotropic drug prescribing. Results:The study sample included 66 Rxs consisting of 63 active ingredients. The average number of medications per Rxs was seven (range, 1-13). Acetaminophen/caffeine/(pseudo)ephedrine (59.1%) and topiramate (54.5%) were the most commonly used medicines. The most frequently prescribed drug regimen involved a combination of on-label WL, off-label WL, and medication-induced symptom management drugs. Conclusion: Psychotropic appetite suppressants have been prescribed with unapproved WL drugs or psychotropic anti-anxiety/hypnotics. Further research is needed to provide evidence on drug combinations to ensure the safety of WL treatments.