Randomised controlled trial

Tirzepatide once weekly for the treatment of obesity in people with type 2 diabetes (SURMOUNT-2): a double-blind, randomised, multicentre, placebo-controlled, phase 3 trial

Garvey WT, Frias JP, Jastreboff AM, et al. The Lancet 2023;402:613-626.

What it found

Mean body weight change of -12.8% (10 mg) and -14.7% (15 mg) vs -3.2% with placebo; 79-83% lost at least 5% vs 32%. Side effects were mainly gastrointestinal and led to stopping treatment in under 5%.

Limitations

Weight loss was smaller than in people without diabetes (SURMOUNT-1). Lifestyle intervention in all groups.

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