Efficacy of liraglutide 3.0 mg treatment on weight loss in patients with weight regain after bariatric surgery

PURPOSE: Bariatric surgery, as Roux-en-Y gastric bypass (RYGB), laparoscopic gastric banding (LGB), and laparoscopic sleeve gastrectomy (LSG), is considered the gold standard treatment to achieve long-term weight loss in severe obesity. In patients who fail to maintain the achieved weight, pharmacological treatment may be required. Here, we reported our real-life experience on the efficacy of liraglutide therapy in 62 patients who regained weight after bariatric surgery. METHODS: We retrospectively evaluated 62 (60 F-2 M; mean age: 43.6 ± 9.9 years) patients received liraglutide for weight loss after bariatric surgery (17 RYGB, 22 LGB, and 23 LSG). Body mass index (BMI) before and after surgery was, respectively, of 45.4 ± 5.5 kg/m(2) and 29.5 ± 4.9 kg/m(2). Patients were followed up from 2016 until 2021. Liraglutide was administered after weight regain once-daily subcutaneously at starting dose of 0.6 mg and with weekly increases up to 3.0 mg. Treatments were administered when a weight regain of 10–15% occurred after reaching a minimum weight loss from bariatric surgery or if weight loss after bariatric surgery was unsatisfactory. RESULTS: After a mean of 70.7 ± 43.7 months from any bariatric surgery, all patients started liraglutide therapy. At this time, mean BMI was 34.2 ± 4.8 kg/m(2) (mean increased BMI: 4.7 ± 2.8 kg/m(2)). After a mean of 10.5 ± 4.4 months from the beginning of liraglutide, 9 patients achieved normal weight (BMI 24.1 ± 0.9 kg/m(2)), and 28 were overweight (BMI 26.9 ± 1.6 kg/m(2)). Twenty patients achieved grade I (BMI 32.1 ± 1.5 kg/m(2)), 5 grade II (BMI 37.3 ± 2.0 kg/m(2)) obesity, and none had grade III obesity (mean BMI change: − 5.1 ± 2.5 kg/m(2)). The treatment was well tolerated, and no serious adverse events were recorded. CONCLUSION: These data confirm the efficacy and safety of liraglutide in patients who experienced weight regain after bariatric surgery. Considering the long-term follow-up, patients should be followed up regularly and the pharmacological treatment should be adapted to the weight fluctuations observed during the clinical history. LEVEL OF EVIDENCE: V. Opinions of authorities, based on descriptive studies, narrative reviews, clinical experience, or reports of expert committees.