Peptide Watchdogs
Price index / Tirzepatide
Weight-loss

Tirzepatide

CAS 2023788-19-2 Also sold as Tirzep, Tirz, GLP-2T, TR, Mounjaro

A weight-loss research peptide. Live vendor vial prices, sorted lowest first.

For research use only. Not for human consumption. No health, dosing, or usage claims are made.

What Tirzepatide is

Tirzepatide is a modified peptide that activates two gut-hormone receptors (GIP and GLP-1). As an approved medicine it is sold under the brand names Mounjaro and Zepbound. Important: peptide material sold to laboratories as a research chemical is not the FDA-approved drug and is not intended for human use.

Typemodified single-chain peptide (GIP/GLP-1 dual receptor agonist)
Molecular formulaC225H348N48O68
Molecular weight4813 g/mol
CAS number2023788-19-2
PubChem CID166567236 ↗
CategoryWeight-loss

Regulatory status: Tirzepatide is FDA-approved as Mounjaro (type 2 diabetes, NDA 215866, approved May 2022) and Zepbound (weight management, NDA 217806, approved Nov 2023); research-chemical versions sold to labs are not the approved drug product.

Vial price (low)
$50
Vial price (high)
$170
Vial sizes
5, 10, 20, 30 mg
Vendors listing
5
Verified
—

Price by vial size

sourced market ranges · Jul 2026
5 mg vial
$50–$70
10 mg vial
$70–$110
20 mg vial
$90–$90
30 mg vial
$170–$170

Typical vendor vial prices, Jul 2026. Exact prices load with verified listings.

Compare vendors

vendor prices · lowest first
VendorVial priceCoupon
Simple Peptide
$0.05Best — View vendor ›
Precision Research Peptides
$0.13 WATCHDOG20 View vendor ›
Prime Lab Peptides
$0.16 — View vendor ›
Koi Peptides
$0.18 — View vendor ›
Protide Health
$0.20 — View vendor ›
BioInfinity Lab
$0.22 — View vendor ›
Kaia Peptides
$0.33 — View vendor ›
BioLongevity Labs
$0.50 — View vendor ›
Mile High Compounds
$1 — View vendor ›
PSPeptides
$3.60 — View vendor ›
Skye Peptides
$8.80 — View vendor ›
Comparing vial prices. Vial price is what you actually pay — no derived math to get wrong. Just match the vial size across vendors: a 10 mg vial against another 10 mg vial. Sizes for this compound are listed above. Need to plan a reconstitution? Use the calculator.

Where it shows up in research

literature areas · not a health claim
Glucose-regulation and type-2-diabetes research (clinical)Body-weight and metabolic research (clinical)Dual-incretin (GIP/GLP-1) receptor pharmacology research (preclinical and clinical)

These are areas explored in the scientific literature; research-chemical material is not the approved medicine and these notes are not health claims for that material.

Storage & handling

Planning a reconstitution? Use the calculator — it is math for handling a vial, not dosing.

Looking at this for yourself? Tirzepatide is a research compound — whether it is right for a person is a medical question we cannot answer. Talk to a licensed clinician. Everything on this page is for laboratory research use only.

Sources & further reading: PubChem CID 166567236 — Tirzepatide identity (NCBI) · FDA — Zepbound (tirzepatide) medical review, NDA 217806 · Incretin hormones and type 2 diabetes (NCBI PMC review)
How we source this ›

Frequently asked

How much does Tirzepatide cost?
About $50–$170 per vial, depending on vial size. Compare the same size across vendors.
Why do Tirzepatide prices vary so much?
Vial sizes differ, so always compare the same vial size across vendors. Batch testing, stock, and pack discounts move the true cost too — see what "Verified" means.
How are Tirzepatide vendors verified?
A vendor earns a Verified badge only after independent batch testing (HPLC purity + mass-spec identity) checks out against its COA. Verification is never for sale.

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