GLP-1 receptor agonists and tirzepatide provide clinically meaningful additional weight loss when used as adjuncts in patients with inadequate weight loss or weight regain after bariatric surgery or endoscopic procedures.
Effective rescueGLP-1 drugs provide clinically meaningful weight loss for bariatric surgery patients experiencing weight regain
What the researchers found
GLP-1 RAs combined with ESG produced more weight loss than ESG alone. In post-bariatric weight regain, GLP-1 RAs and tirzepatide showed clinically relevant short-term weight loss, while non-GLP-1 medications and probiotics showed modest or inconsistent effects.
Why it matters
Weight regain after bariatric surgery is common and demoralizing. Having effective pharmacological options like GLP-1 drugs to augment surgical results could improve long-term outcomes for millions of bariatric surgery patients.
How the study worked
Narrative review of studies combining surgical or endoscopic bariatric interventions with anti-obesity medications or probiotics, focusing on weight loss outcomes.
What this study cannot tell us
Mostly short-term data. Studies are generally small. No standardized protocols for combining medications with surgery. Long-term safety and efficacy of combination approaches unknown.
How to read the evidence
Narrative review of mostly small, heterogeneous studies. Evidence supports the combination approach but larger, controlled trials are needed.
When this study was published
Published in 2025, reviewing the emerging practice of combining GLP-1 drugs with bariatric procedures.
The bigger picture
The integration of pharmacotherapy with bariatric procedures represents a shift toward multimodal obesity management, where GLP-1 drugs fill the gap when surgical weight loss is insufficient.
Questions still open
- Should all bariatric surgery patients receive prophylactic GLP-1 therapy to prevent weight regain?
- How long should GLP-1 drugs be continued after bariatric surgery for optimal outcomes?
- Does starting GLP-1 drugs before bariatric surgery improve surgical outcomes?
Common questions
Can I take GLP-1 drugs if I've already had bariatric surgery?
Which weight loss drug works best after bariatric surgery?
Read the original research
The effect of combining surgical or endoscopic bariatric interventions with anti-obesity medication or probiotics on weight loss: a narrative review.
Frontiers in endocrinology, 17, 1680182
Citation
de Waal, J R; Nieuwdorp, M; Gerdes, V E A. (2026). The effect of combining surgical or endoscopic bariatric interventions with anti-obesity medication or probiotics on weight loss: a narrative review.. Frontiers in endocrinology, 17, 1680182. https://doi.org/10.3389/fendo.2026.1680182