For research purposes only. Tirzepatide is a research peptide not approved for human use outside of prescription contexts. All pricing data is pulled live from vendor catalogs and updated automatically.
Tirzepatide is one of the most actively researched peptides in the metabolic science space. As a dual GLP-1/GIP receptor agonist, it has been the subject of extensive clinical research and has generated significant interest in the research community. This guide covers where to source research-grade Tirzepatide, how vendors compare on price and testing quality, and how to find the best value for your specific quantity.
What Is Tirzepatide?
Tirzepatide is a synthetic peptide that simultaneously activates two incretin hormone receptors: GLP-1 (glucagon-like peptide-1) and GIP (glucose-dependent insulinotropic polypeptide). This dual mechanism distinguishes it from earlier GLP-1 only agonists and has made it a subject of significant interest in metabolic research.
It was developed by Eli Lilly under the brand names Mounjaro and Zepbound and has been approved by the FDA for specific therapeutic indications. For research purposes, it is available as a lyophilized peptide from several vendors.
This peptide is sold for research purposes only and is not intended for human consumption, therapeutic, or diagnostic use.
What to Look for When Buying Tirzepatide
Tirzepatide is a relatively large and complex peptide — synthesis difficulty means quality varies considerably between suppliers. Testing documentation is essential.
What good testing looks like:
- Purity (HPLC or LC-MS) — Tirzepatide's molecular complexity makes mass spectrometry (LC-MS) particularly valuable for confirming identity in addition to standard HPLC purity testing.
- Endotoxin testing — Non-negotiable for any serious research application. Bacterial endotoxins are a byproduct of synthesis and can interfere with research outcomes.
- Heavy metals — Increasingly standard among top-tier vendors.
Always verify the COA is batch-specific and issued by an independent third-party lab.
Current Tirzepatide Prices by Vendor
Prices below are live, pulled directly from vendor catalogs. Price per mg is the most useful comparison metric since vial sizes vary significantly across vendors.
| Vendor | Listing | List price | Per mg |
|---|---|---|---|
| Peptide Supply Co | 10 × 100mg | $900 | $0.900 |
| PeptidePlugs | 10 × 60mg | $540 | $0.900 |
| Crush Research | 3 × 30mg | $99 | Tirzepatide.10 |
| Proved Peptides | 3 × 60mg | $200 | Tirzepatide.11 |
| Puratek Peptides | 60mg | $89.95 | Tirzepatide.50 |
| Virtus Peptides | 30mg | $45 | Tirzepatide.50 |
| Glacier Aminos | 10 × 60mg | Tirzepatide,013.94 | Tirzepatide.69 |
| Orbitrex | 60mg | Tirzepatide69.99 | $2.83 |
| Modern Aminos | 40mg | Tirzepatide15.50 | $2.89 |
| Forge Performance | 30mg | $90 | $3.00 |
| Regenerative Research | 30mg | Tirzepatide02 | $3.40 |
| Real Peptides | 60mg | $240 | $4.00 |
| PADRE Research | 10mg | $49 | $4.90 |
List prices before discounts, each vendor's lowest price per mg. For real totals with multi-vial discounts, discount codes and shipping, see Tirzepatide prices.
Use the The Peptide Plug optimizer to calculate the best price for your specific research quantity including promo codes, vial size combinations, and volume discounts.
Vendor Breakdown
Crush Research
US-based vendor with full independent third-party COAs on every product, including purity, endotoxin, and heavy metals. Tirzepatide is listed under their GLP-2 product line. Carries multiple vial sizes.
Peptide Supply Co
US-based with purity and endotoxin testing. Competitive pricing on smaller vial sizes. No heavy metals testing on file currently. Ships quickly with a solid reputation for customer service.
Peptide Partners
EU and US shipping available. Full third-party testing on all products. Notable for carrying very large vial sizes which can offer strong per-mg value for higher-volume research. Tirzepatide is available in a wide range of sizes.
Glacier Aminos
US-based with one of the most comprehensive testing protocols available — 7-point testing including sterility and conformity. Tirzepatide is listed under their GLA-2 TRZ product line and available in multiple sizes.
Orbitrex
US-based with full third-party testing. QR-coded vials link directly to batch-specific COAs. Tirzepatide is listed under the code "G2-TRZ."
Blank Peptides
US-based vendor with strong testing credentials — Freedom Diagnostics lab, HPLC + LC-MS. Newer entrant carrying Tirzepatide in smaller vial sizes with excellent purity documentation.
How to Get the Best Price
Vial size matters significantly — Tirzepatide pricing varies more across vial sizes than most other peptides due to its synthesis complexity. The difference between the smallest and largest available vials can be dramatic. The optimizer accounts for this automatically.
Promo codes — Active codes for multiple vendors are tracked on The Peptide Plug and applied automatically in the optimizer. Worth checking before purchasing.
Volume discounts — Some vendors offer tiered pricing at 5+ vials. These are factored into the optimizer.
Use the optimizer — The Peptide Plug price comparison tool calculates the true lowest cost for your exact research quantity across all vendors, factoring in vial combinations, volume tiers, promo codes, and shipping in one calculation.
Tirzepatide vs Retatrutide for Research
The primary structural difference is that Retatrutide adds glucagon receptor activation to the GLP-1/GIP dual mechanism, making it a triple agonist. From a sourcing perspective, Tirzepatide is generally available at a lower price per mg due to higher production volumes and more established supply chains.
For researchers comparing the two, Retatrutide commands a premium across most vendors currently. The Peptide Plug optimizer can run both side by side to compare total research costs.
Frequently Asked Questions
Is Tirzepatide legal to buy for research?
Tirzepatide is legal to purchase for legitimate research purposes in the United States. It should only be handled by qualified researchers in appropriate settings and is not for human consumption outside of prescribed medical contexts.
What purity should I look for?
≥98% purity by HPLC is the standard benchmark for research-grade peptides. Given Tirzepatide's complexity, LC-MS confirmation of identity is an additional quality marker worth looking for.
How should Tirzepatide be stored?
Lyophilized Tirzepatide should be stored at -20°C and protected from light and moisture. Once reconstituted, store at 4°C and use within a timeframe consistent with your research protocol.
Which vendor has the best testing?
All US vendors listed on The Peptide Plug are independently third-party tested for purity and endotoxins — that's a baseline requirement for inclusion. Some vendors go beyond that standard: Glacier Aminos, for example, uses a 7-point protocol that adds sterility, conformity, and heavy metals testing on top of the baseline. We continuously monitor vendor testing standards and prioritize vendors who go above and beyond what the industry typically requires.