Research

Hormonal

GLP-1 receptor agonists (GLP1RAs) do not increase the risk of adverse events compared to other anti-obesity medications in patients who have undergone bariatric surgery.

If you have had bariatric surgery and are considering GLP-1 medications (like Semaglutide or Liraglutide) for weight regain, current data indicates they are not more dangerous than other standard weight loss drugs. The risk of serious complications is low and similar to other options. However, starting these medications more than 12 months after surgery appears to have a lower risk of adverse events than starting them earlier.

ModerateRefutesMEDIUM confidence
GLP1RAs were not associated with an increased risk of AEs compared to non-GLP1RA AOMs in patients who previously underwent bariatric surgery.
Jason M. Samuels et al. · medRxiv · 2024

Why this rating

Retrospective cohort study with large sample size (n=599) but inherent observational biases and lack of dosing data.

Source

Adverse Event Comparison between Glucagon-like Peptide-1 Receptor Agonists and Other Anti-Obesity Medications Following Bariatric Surgery

Jason M. Samuels et al. · medRxiv · 2024

DOI 10.1101/2024.04.21.24306138

preprint · n=599Cited 1×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

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