🇺🇸 PROUDLY AMERICAN COMPANY — U.S. owned & operated · Ships from the USA 🇺🇸
For research purposes only · Not for human consumption · You must be 21+ to purchase
Zeus Aminos
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● Third-party tested (COA verified)

Zeus Aminos — precision research starts here

Zeus Aminos provides high-purity peptides and biochemicals to support and advance the scientific community. Every batch is independently analyzed for consistency and quality.

🇺🇸 U.S. Company 🧪 ≥99% Purity — COA on every batch 🚚 Same-day shipping before 12PM ET 🔒 Secure checkout
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Catalog

Featured products

Selected research compounds. See the full shop for our entire catalog.

⚠ RESEARCH USE ONLY — Products are intended for in-vitro laboratory research only and are not for human or animal consumption.
Why Zeus Aminos

Trust that science demands

From synthesis to your bench — every step documented, tested and verified.

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Purity ≥ 99% — Verified

Every single batch is HPLC-tested and independently analyzed. If it doesn't meet the standard, it never ships.

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COA on Every Batch

Third-party Certificates of Analysis published right here on the site — check your compound's lab results before you buy.

See lab results →
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Same-Day Dispatch

Order before 12PM ET and it ships the same business day — tracked, insured and in discreet packaging.

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Secure & Compliant

Encrypted checkout, strict 21+ research-only policy and full adherence to applicable U.S. regulations.

Why Researchers Choose Zeus Aminos

Researcher using AI-assisted analysis in a peptide research laboratory

Unmatched Purity & Quality: Every batch is rigorously analyzed to ensure the highest standards, so you can trust your results.

Same-Day Shipping: Orders placed before 12:00 PM ET, Monday–Saturday, are typically shipped the same business day. Orders after the cutoff ship the next business day. We ship via FedEx or UPS (PO Boxes via USPS).

Secure & Compliant: All operations are conducted with strict adherence to safety and legal regulations, providing you with a trustworthy source.

Competitive Pricing: Access premium research materials at fair prices. Use code WELCOME10 to save 10% on your first order!

High-purity research peptides, tested and documented

Zeus Aminos supplies research peptides and laboratory research compounds to scientists, universities and independent labs across the United States. Every compound in our catalog is manufactured to a 99% HPLC purity specification and released only against a batch-specific third-party tested COA (Certificate of Analysis) documenting identity by mass spectrometry, purity by HPLC, and the lot number printed on the vial.

We ship high purity peptides from the USA — orders placed before 12:00 PM ET, Monday to Saturday, are typically dispatched the same business day via FedEx or UPS, tracked, insured and in discreet packaging. Our catalog covers research peptides such as BPC-157, TB-500, GHK-Cu, Semax, Selank, Epithalon, MOTS-c, SS-31, Tesamorelin and CJC-1295/Ipamorelin, the GLP research class including Retatrutide, plus the reconstitution supplies a bench protocol needs.

All laboratory research compounds sold here are supplied strictly for in-vitro and analytical research. They are not drugs, are not for human or animal consumption, and are not intended to diagnose, treat, cure or prevent any disease. Purchasers must be 21 or older.

GLP research compounds compared

The three compounds researchers most often ask us to compare differ in how many receptors they target and in how far along the regulatory path they are. This table is informational only — it is not dosing guidance and not a claim of efficacy.

Compound Receptor targets Regulatory status Available at Zeus Aminos
Retatrutide (GLP-3) Triple agonist — GLP-1, GIP and glucagon receptors Investigational. Not FDA-approved for any indication. 30 mg · 50 mg
Tirzepatide Dual agonist — GLP-1 and GIP receptors FDA-approved as a prescription medicine (Mounjaro / Zepbound). Not offered
Semaglutide Single agonist — GLP-1 receptor FDA-approved as a prescription medicine (Ozempic / Wegovy). Not offered

Frequently asked questions

What is a research peptide?

A peptide is a short chain of amino acids linked by peptide bonds — smaller than a protein, larger than a single amino acid. A research peptide is one manufactured and sold for laboratory experimentation: characterising a mechanism, running an assay, validating an analytical method. It is not a medicine and carries no approved therapeutic indication.

What does "research use only" actually mean?

It means the material is sold for in-vitro and analytical work by qualified people, and for nothing else. It is not for human or animal consumption, it has not been evaluated by the FDA, and it is not intended to diagnose, treat, cure or prevent any condition. Buying from this site means agreeing to use the material within those limits and within applicable law.

What is a COA and how do I get the one for my vial?

A Certificate of Analysis is the independent lab report for a specific production lot. It documents compound identity (usually by mass spectrometry), purity (by HPLC), the lot number and the date of analysis. Published certificates are on our Analysis page; to get the one matching your vial, send us the lot number printed on the label through the contact page.

What purity do you supply?

Our specification is 99% HPLC purity. The figure that matters is the one on the certificate for your particular lot, not a number on a marketing page — which is why every lot has its own COA rather than a single site-wide claim.

How should peptides be stored?

Lyophilised (freeze-dried) peptide is stable for long periods when kept cold, dark and dry — typically −20 °C for extended storage. Once reconstituted, stability drops sharply: refrigerate and use within the window appropriate to that compound. Repeated freeze–thaw cycles degrade material, so aliquot rather than thawing the same vial repeatedly.

How is a lyophilised peptide reconstituted?

Solvent is added slowly down the inside wall of the vial — never squirted directly onto the powder — and the vial is swirled, not shaken, until dissolved. Bacteriostatic water is used where a preserved multi-use solution is wanted; sterile water where no preservative is acceptable. We cover the full procedure in our Research Center.

Where do you ship from, and how fast?

We ship from the United States. Orders placed before 12:00 PM ET, Monday to Saturday, are typically dispatched the same business day; later orders go the next business day. Domestic shipping is a flat $15 and free above $250, sent via FedEx or UPS (PO Boxes via USPS), tracked, insured and discreetly packaged.

Do you ship internationally?

Yes. International orders are priced in US dollars and paid by international credit or debit card through Stripe, with a single flat shipping rate per destination country shown at checkout and transit of up to 30 days. The customer is responsible for any import duties and for confirming the material may lawfully be imported for research in their country.

Do I need a licence or an institution to order?

You must be 21 or older and ordering for legitimate laboratory research. We reserve the right to refuse, cancel or limit any order at our discretion; where an order is refused after payment, it is refunded in full.

What is your refund and replacement policy?

All sales are final — we do not accept returns or exchanges. These are research chemicals whose integrity depends on storage and handling conditions we cannot verify once the package leaves our control, so returned material cannot be resold. What we do cover, at no cost to you: if the wrong item arrived, the shipment was damaged in transit, or items were missing, we refund or replace it. Tell us within 24 hours of delivery, send a photo of the issue and keep the product unopened. Full terms are on the Legal page.

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From the Zeus Aminos research desk

Evidence-based explainers on the compounds in our catalog, written from primary literature and cited to PubMed. Research use only.

All research news

Research guides by compound

Practical, bench-level guides for every compound we supply: sequence and structure, what the preclinical literature actually reports, storage and reconstitution, and how to read the Certificate of Analysis. Written from primary sources. Research use only.

All research guides