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Retatrutide

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2 July 2026Updated 18 September 2026

Retatrutide

Overview Research16 Mechanism

Protocols Safety Discussions

Warning

Important information. The data compiled from scientific literature is provided for educational purposes. Dosage ranges reflect what is reported in studies and do not constitute a recommendation, prescription, or usage guidance. Health decisions should always be made with a qualified professional.

Mechanism of Action

Agonizes GLP-1 receptor on pancreatic beta cells to increase glucose-dependent insulin secretion

Agonizes GIP receptor to potentiate glucose-stimulated insulin release and beta-cell responsiveness

Activates hepatic glucagon receptor to increase energy expenditure and promote fat oxidation

Reduces appetite by engaging hypothalamic GLP-1/GIP pathways that enhance satiety signaling

Slows gastric emptying via GLP-1R-mediated modulation of vagal and gut motility circuits

Enhances adipose lipolysis and fatty acid mobilization through GCGR and GIPR-linked signaling

Raises intracellular cAMP in beta cells, amplifying insulin secretion and insulin biosynthesis

Suppresses inappropriate alpha-cell glucagon secretion via GLP-1R signaling to improve glycaemia

Promotes hepatic lipid oxidation and reduced liver fat through GCGR-driven metabolic programs

Synergistic tri-agonism (GLP-1/GIP/GCGR) increases basal metabolic rate to support weight loss