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SYNCHRONIZE-1 · GLP Finds editorial

Survodutide: what SYNCHRONIZE-1 found

A phase 3 trial compared survodutide with placebo in adults without diabetes.

The short answer

Survodutide produced more average weight loss than placebo over 76 weeks. Digestive symptoms were common in both dose groups.

Who was studied?

This phase 3 trial randomized 725 adults with obesity or overweight plus a related complication, excluding diabetes. Everyone received lifestyle counseling.

Average weight loss at week 76; 725 adults randomized
Percent of starting weight; treatment-regimen estimand
Survodutide 3.6 mg12.2%Survodutide 6.0 mg13.0%Placebo5.4%

Original visual based on the study.

Average weight loss at week 76; 725 adults randomized
Group or measureResult
Survodutide 3.6 mg12.2%
Survodutide 6.0 mg13.0%
Placebo5.4%

What changed?

Average weight loss at week 76 was:

Survodutide 3.6 mg: 12.2%.

Survodutide 6.0 mg: 13.0%.

Placebo: 5.4%.

These estimates accounted for early treatment discontinuation and other specified treatment changes. They are group averages, not individual promises.

What were the trade-offs?

Digestive adverse events occurred in 80.9%, 89.7% and 47.9% of the respective groups. Most were mild or moderate. Those percentages describe symptoms, not the proportion who stopped treatment.

The useful takeaway

The trial supports a weight-loss effect for a medicine targeting both glucagon and GLP-1 receptors. It did not directly compare survodutide with semaglutide or tirzepatide. Separate-trial headlines cannot establish a winner.

Sources

le Roux and colleagues, New England Journal of Medicine, 2026. Funded by Boehringer Ingelheim.