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Answer · metabolic

What is tirzepatide?

Short answer

Tirzepatide is a dual GIP and GLP-1 receptor agonist with greater weight reduction and glycemic improvement than GLP-1 monotherapy in head-to-head trials.

Reviewed by Dr. Laura PurdyMay 29, 2026

Full answer

Tirzepatide is a once-weekly injectable that activates both GIP and GLP-1 receptors. In head-to-head trials it produced greater A1C reduction and greater weight loss than semaglutide. The mechanism combines GLP-1 effects on appetite and insulin secretion with GIP effects on lipid handling and adipose tissue function. Within oMeds review, tirzepatide candidacy is determined by a licensed provider against a comprehensive baseline panel and is paired with nutritional and behavioral support. Side-effect profile mirrors GLP-1 monotherapy and is dose-dependent.

Educational. Not a substitute for individualized provider review.

References & sources
  • Metabolic Optimization pathway — Primary source · oMeds
  • Reviewed by Dr. Laura Purdy, MD, MBA · Clinical Director, oMeds · Last reviewed 2026-05-29

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Related answers

Semaglutide vs tirzepatide?
Tirzepatide produces greater weight loss and A1C reduction than semaglutide in head-to-head trials. Choice depends on goals, tolerability, prior response, and provider review.
What is semaglutide?
Semaglutide is a GLP-1 receptor agonist used for type 2 diabetes and weight management. It improves glycemic control and produces meaningful, sustained weight loss.
Primary source
Metabolic Optimization pathway