Medication Use Among Patients Prior to Bariatric Surgery

The aims of this study were to describe the most common medications reported by candidates for weight loss surgery and to consider the potential implications for patient care. A secondary data analysis of data from bariatric surgery patients enrolled in a randomized, controlled trial. At study entry, participants recorded their use of prescription medications they had taken in the previous 90 days. The Anatomical Therapeutic Chemical (ATC)/Defined Daily Dose (DDD) Index 2014 was used to classify medications. Participants (n=265) were 85.7% female and 83.0% white. Mean body mass index was 47.9±6.5 kg/m², and age was 45.1±11 years. The average number of medications was 4.4±4.1, and the median was 3. The top three anatomical main groups were the cardiovascular system, alimentary tract and metabolism, and nervous system (28.2%, 21.6%, and 21.3% of all medications, respectively). The top therapeutic subgroups were drugs used in diabetes, psychoanaleptics, and agents acting on the renin-angiotensin system (12%, 11.3%, and 8.2% of all medications, respectively). Candidates for weight loss surgery report taking medications associated with obesity-related comorbidities such as diabetes, depression, and hypertension. Although many may be able to eliminate these medications, others will require close monitoring and dosage adjustment after surgery.