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Retatrutide 10mg & 20mg triple agonist research peptide — GLP-1, GIP, and glucagon receptor agonist
COA Verified In Stock
99%+ Purity
HPLC Verified
UK Shipping
Secure Payment
Read our Retatrutide research guide

Product Highlights

  • Independently tested by independent third-party laboratories
  • Certificate of Analysis included with every order
  • Protective tracked packaging with tracked delivery
  • Next-day delivery on orders before 2pm

Earn 20% on First Order, 10% Lifetime

20% on their first order, then 10% on every purchase for life.

99%+ Purity COA Included Secure Checkout Easy Returns
Incretin Analogues Peptide

Buy Retatrutide UK — Reta UK Stock, 10mg to 60mg

4.9 · 44 reviews

Triple agonist (GLP-1/GIP/Glucagon) peptide

1
£42.99£62.4836% OFF

Limited time offer — 36% off original price

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Janoshik-verified 99.4–99.7% — see the certificates

For Research Use Only — Not for Human Consumption

UK Shipping
Express (Next Day)£3.99 (Free £75+)
Dispatch TimeBefore 2pm
CoverageEntire UK
Research dataPubChem·PubMed
Full shipping details
Independently verified

Blind-tested by Janoshik Analytical

We sent all three vials to Janoshik, the independent laboratory used across the research-peptide industry, as a blind GLP-1 panel. They tested for Semaglutide, Tirzepatide and Retatrutide without being told which was which. Every vial came back as Retatrutide.

Retatrutide 10 mg 99.401% purity
Content found
11.14 mg
Batch
RT10-0725
Report
#213622
CertificateLive result ↗
Retatrutide 20 mg 99.602% purity
Content found
22.45 mg
Batch
RT20-0725
Report
#213623
CertificateLive result ↗
Retatrutide 30 mg 99.658% purity
Content found
32.63 mg
Batch
RT30-0725
Report
#213624
CertificateLive result ↗

Every vial was overfilled against its label — 11.14 mg in a 10 mg vial, 22.45 mg in a 20 mg, 32.63 mg in a 30 mg. You receive more than you pay for, measured by an independent lab.

View the live lab result at janoshik.com Keys: J7GPI4A85UP7 · 75EIGL5L7F29 · Y2R98TNA9168

Retatrutide (LY3437943) is a novel triple hormone receptor agonist peptide engineered for metabolic and endocrine research. Uniquely, it simultaneously activates the glucagon-like peptide-1 (GLP-1), glucose-dependent insulinotropic polypeptide (GIP), and glucagon receptors — making it one of the most advanced multi-agonist compounds available for laboratory investigation. Retatrutide has been studied extensively for its effects on energy expenditure, lipid metabolism, insulin sensitivity pathways, and body composition models. Its triple agonist mechanism distinguishes it from single or dual-agonist analogues, offering researchers a powerful tool for exploring integrated metabolic regulation. AllMyPeptides supplies Retatrutide as a high-purity lyophilised research peptide with every batch independently tested by independent third-party laboratories using HPLC and mass spectrometry to verify 99%+ purity. A comprehensive Certificate of Analysis is included with every order for complete research traceability.

CAS Number

2381089-83-2

Molecular Formula

C221H342N46O68

Molecular Weight

4731.3 g/mol

Appearance

White lyophilised powder

Sequence

Tyr-Aib-Gln-Gly-Thr-Phe-Thr-Ser-Asp-Tyr-Ser-Ile-αMeLeu-Leu-Asp-Lys(γGlu-2×AEEA-C20 diacid)-Ala-Gln-Aib-Ala-Phe-Ile-Glu-Tyr-Leu-Leu-Glu-Gly-Gly-Pro-Ser-Ser-Gly-Ala-Pro-Pro-Pro-Ser-NH2

Need Help With Reconstitution?

Use our free Peptide Calculator and step-by-step Reconstitution Guide

Need Help?

Our UK-based support team is available Mon-Fri, 9am-5pm. Fast response within 24 hours.

Frequently Asked Questions

What is the purity of your Retatrutide?+
Our Retatrutide is 99%+ pure, verified by independent third-party HPLC and mass spectrometry analysis. A Certificate of Analysis (COA) is included with every order.
How should I store Retatrutide?+
Retatrutide should be stored in a cool, dry place away from direct light. For long-term storage, refrigeration at 2-8°C is recommended. Always reconstitute with bacteriostatic water and use proper aseptic technique.
How do I reconstitute Retatrutide?+
Use our free Peptide Calculator to determine the correct amount of bacteriostatic water for your desired concentration. Slowly inject the water down the side of the vial — do not spray directly onto the peptide. Gently swirl until fully dissolved.
Is Retatrutide for human consumption?+
No. All products sold by AllMyPeptides are strictly for in vitro research and laboratory use only. They are not intended for human consumption, diagnostic, or therapeutic purposes. Purchasers must be qualified researchers aged 18 or over.
How quickly will my order arrive?+
Order before 2pm Monday to Friday (or 12pm Saturday) and we dispatch the same day on Royal Mail Tracked Express — almost always with you the next day. Free on orders over £75. We ship across the entire UK.

Where to buy Retatrutide in the UK

Retatrutide is a research compound, so it is sold for laboratory use only and not through pharmacies. Buying in the UK means choosing a supplier who can evidence what is in the vial — which is why the certificate matters more than the price.

Three things worth checking wherever you buy Retatrutide:

  • A batch-matched certificate — the lot number on the vial should appear on the report, not a generic document reused across every order.
  • Independent testing — an in-house claim is not verification. Look for a named third-party laboratory you can check.
  • A UK dispatch address — overseas orders face customs delays and no consumer recourse.

Retatrutide for sale — current UK pricing

Vial sizePriceCost per mg
10mg£42.99£4.30 per mg
20mg£72.99£3.65 per mg
30mg£92.99£3.10 per mg

Every order ships from the UK with tracked delivery, dispatched the same day when placed before 2pm. Compare cost per milligram across sizes on our value calculator, or read the Retatrutide research guide for background on the compound.

Supplied strictly for laboratory research use only. Not for human or veterinary consumption.