Medicine & Health17 December 2025
Mazdutide vs Dulaglutide: Is Two Better Than One for Diabetes Control?
Source PublicationNature
Primary AuthorsGuo, Zhang, Xue et al.

Imagine trying to drive a car using only the brake pedal. That is often how treating Type 2 diabetes feels; you are constantly trying to slow down rising blood sugar levels while the body's engine races on. Current treatments like dulaglutide act as a powerful brake, but new research asks: what if we could adjust the engine too?
The Matchup: Mazdutide vs Dulaglutide
To answer this, scientists organised a large-scale trial comparing a standard therapy against a new contender. Dulaglutide is a GLP-1 receptor agonist. It mimics a hormone that signals fullness. Mazdutide, however, is a 'dual agonist'. If you take mazdutide, it hits the GLP-1 receptor to curb hunger, but it also activates the glucagon receptor to potentially burn more energy. In this 28-week study, 731 participants were randomised to receive either mazdutide (at 4 mg or 6 mg doses) or dulaglutide (1.5 mg). What the Data Shows The researchers measured two main things: blood sugar control (HbA1c) and body weight. The results were stark. If a patient received mazdutide, their blood sugar levels dropped lower than those on dulaglutide. The 6 mg dose lowered HbA1c by an extra 0.30% compared to the standard drug. The difference in weight loss was even more dramatic. Participants on the higher dose of mazdutide achieved a 5.76% greater weight reduction than the dulaglutide group. The Cost of Efficacy There is, however, a trade-off. The study measured a higher incidence of tummy troubles in the dual-agonist group. Diarrhoea, nausea, and vomiting were more frequent with mazdutide. This data suggests that while targeting two receptors yields superior metabolic control, it may require patients to tolerate more initial discomfort. For those prioritising weight loss alongside glucose management, the dual-action mechanism appears to offer a significant advantage.Cite this Article (Harvard Style)
Guo et al. (2025). 'Mazdutide vs Dulaglutide: Is Two Better Than One for Diabetes Control?'. Nature. Available at: https://doi.org/10.1038/s41586-025-10031-z