Obesity

Indirect Comparative Efficacy and Safety of Tirzepatide Versus Oral Semaglutide for the Treatment of Overweight and Obesity

Diabetes Obes MetabPublished Indirect treatment comparison using multilevel network meta-regression

Authors' conclusion

Tirzepatide was associated with statistically significantly greater weight and waist circumference reduction versus oral semaglutide and improved or similar cardiometabolic benefits and safety.

Study context

Population
Adults without T2D with obesity (BMI ≥ 30 kg/m²), or overweight (BMI ≥ 27 kg/m²) with ≥ 1 obesity-related complication2 pivotal trials
Comparison
Weekly injectable tirzepatide 5, 10 and 15 mg vs daily oral semaglutide 50 mg
Outcome
Weight reduction
Methodological detailsMultilevel network meta-regression (ML-NMR), adjusted for differences in sex, ethnicity and outcome baselines
  • ML-NMR
  • Adjusted for differences in sex, ethnicity and outcome baselines

Main finding

As reported in the abstract

Each group vs oral semaglutideMean difference, % (CI)
Tirzepatide 10 mg
−4.48(−6.35 to −2.61)
Tirzepatide 15 mg
−5.59(−7.52 to −3.77)

Further findings

OutcomeMean difference (cm) (CI)
Waist circumferenceTirzepatide 10 mgvs Oral semaglutide−3.60 (−5.59 to −1.72)
Waist circumferenceTirzepatide 15 mgvs Oral semaglutide−4.32 (−6.30 to −2.40)

Achieving ≥ 5%/10%/15%/20% weight reduction

Tirzepatide 10 and 15 mg: higher odds vs oral semaglutide

Cardiometabolic benefits

Improved or generally comparable for tirzepatide vs oral semaglutide

Original publication

Indirect Comparative Efficacy and Safety of Tirzepatide Versus Oral Semaglutide for the Treatment of Overweight and Obesity. Diabetes Obes Metab. Published 28 April 2026. doi:10.1111/dom.70773

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