Why do Mazdutide prices vary so much between vendors?

Vial sizes differ, so always compare the same vial size across vendors. Batch testing, stock status, and pack discounts also move the true cost.

How does Peptide Watchdogs verify Mazdutide vendors?

A vendor earns a Verified badge only after independent batch testing (HPLC purity plus mass-spec identity) checks out against its published COA. Verification is never for sale.

Price index / Mazdutide

Weight-loss

Mazdutide

Also known as IBI362

CAS 2259884-03-0 Also sold as IBI362, LY3305677, Mazi

A weight-loss research peptide. Current market pricing by vial size, and vendor listings as they are verified.

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

What Mazdutide is

Mazdutide (IBI362 / LY3305677) is a GLP-1 receptor and glucagon receptor dual agonist and oxyntomodulin analog developed by Innovent Biologics under license from Eli Lilly. In the literature it is studied mainly for obesity and type 2 diabetes. Outside its approval in China it is an investigational research compound, and the version sold to laboratories is a research chemical, not an approved medicine.

Type29 amino acids (a lipidated oxyntomodulin analog)

Molecular formulaC210H322N46O67

Molecular weight4563.06 g/mol (average; PubChem's summary string lists C207H317N45O65 — supplier and reference sources use C210H322N46O67)

CAS number2259884-03-0

Amino-acid sequenceSynthetic 29-residue oxyntomodulin analog with a C20 fatty-diacid lipid side chain attached through a linker to a lysine; no single canonical one-letter sequence is published.

CategoryWeight-loss

Regulatory status: Not FDA-approved and investigational in the US and most of the world as of 2026. Its injectable form was approved by China's NMPA in June 2025 for weight management in adults with obesity or overweight; that approval does not apply elsewhere.

Vial price (low)

$70

Vial price (high)

$240

Vial sizes

5, 10 mg

Vendors listing

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Verified

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Price by vial size

sourced market ranges · Jul 2026

5 mg vial

$70–$140

10 mg vial

$120–$240

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

Compare vendors

vendor prices · lowest first

Vendor	Vial price	Coupon
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

Weight-loss and obesity research (clinical trials)Type 2 diabetes and glycemic-control researchMetabolic and lipid-regulation studies

These are areas where the compound appears in the scientific and clinical-trial literature. Listing a research area is not a health claim and does not indicate any effect you should expect.

Storage & handling

Freeze-dried (lyophilized) vials are typically kept cold and out of direct light.
Once mixed with bacteriostatic water, peptides are generally refrigerated and used within a limited window.
Always follow the storage details on the vendor's COA and vial label.

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

Looking at this for yourself? Mazdutide 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 167312357 — identity (NCBI) · Mazdutide Phase 1b study (NCBI PMC) · Mazdutide — overview (Wikipedia)
How we source this ›

Frequently asked

How much does Mazdutide cost?

About $70–$240 per vial, depending on vial size. Compare the same size across vendors.

Why do Mazdutide 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 Mazdutide 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.

Related compounds

Weight-loss

Semaglutide $45+ / vial Tirzepatide $50+ / vial Retatrutide $85+ / vial Cagrilintide $95+ / vial