What is Tirzepatide?
A plain-English, research-use-only guide to Tirzepatide: what it is, its research-use status, and how to tell a verified source from a risky one.
- US vendors carry it
- 74
US vendors carry it
- Top certificate score
- 9.5/10
Top certificate score
What Tirzepatide is
Tirzepatide is a single synthetic peptide that is an agonist at both the GIP and GLP-1 receptors (two incretin-hormone receptors). Like semaglutide, it is sold by research-peptide vendors and is the same molecule found in certain branded medications.
Research-use status
Tirzepatide is the active molecule in FDA-approved prescription medications, but research-grade tirzepatide is not the approved branded product. This guide does not summarise effects or uses. Research-grade material is sold for laboratory research use only.
This describes research-use status only. It is not medical advice and says nothing about effects, uses or dosing. Tirzepatide is sold for laboratory research use only.
How to find a verified Tirzepatide source
Per-mg prices for tirzepatide differ by a wide margin across the vendors we track. As with all GLP-1-class research peptides, verifiable third-party COAs matter most, and the GLP-1 safety caveats apply: research use only, and dosing errors with research material can be dangerous.
Compare 74 US Tirzepatide sources
See every vendor ordered by certificate score, then vendor score; Zeptix Labs is listed first in our 2026 audit.
Tirzepatide: Frequently Asked Questions
How is tirzepatide different from semaglutide?
Semaglutide activates the GLP-1 receptor; tirzepatide activates both the GLP-1 and GIP receptors. They are different molecules and should be evaluated (and COA-verified) separately.