Tirzepatide: what it is, how it is sold and how to track it

What it is

Tirzepatide is a dual GIP and GLP-1 receptor agonist. It is a peptide of 39 amino acids with a fatty acid chain attached, designed to act on two gut hormone receptors instead of one.

It is the active ingredient in FDA-approved prescription medicines for type 2 diabetes and chronic weight management.

How it is usually sold

• Approved medicines: prescription pens and vials from a pharmacy
• Compounded versions, which are a separate category with their own rules
• Research vials: freeze-dried powder in a wide range of milligram strengths; these are not the approved medicine

Regulatory status

Tirzepatide is approved only as part of specific prescription products. Vials sold "for research use only" are not approved for human use. Check the rules where you live.

Storage basics

Sealed research vials are usually kept cold and away from light. Mixed vials are typically refrigerated and used within a window you set from the vendor's guidance.

How The Pep Planner helps you track it

Research vials come in many strengths, so record the mg per vial carefully. After mixing, the amount per unit depends on how much liquid you added; the reconstitution calculator does that math and saves the mix with the vial, so your protocol and stock counts stay in step.

Common questions

What does GIP stand for?

Glucose-dependent insulinotropic polypeptide, another natural gut hormone. Tirzepatide acts on its receptor as well as the GLP-1 receptor.

Does this page recommend an amount?

No. The Pep Planner is an organizer and tracker. We do not give dosing or medical advice.