Retatrutide (20mg) vial
Currently unavailable

Retatrutide

20mg Lyophilised Powder

$229.99AUD per vial

Concentration

20mg

CAS Number

2381089-83-2

Volume Savings

1
Express shipping available Australia-wide
Independently laboratory tested with CoA available

Currently unavailable

Purity as reported on CoA: 99.635%

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Product Information

Retatrutide 20mg Research Peptide – Extended-Volume Compound for Laboratory Use

Retatrutide (20mg) from Aus Peptide Supply is a high-purity research peptide formulated for controlled laboratory and in-vitro research applications requiring greater compound volume. Manufactured under strict quality standards, this triple GLP-1/GIP/Glucagon receptor agonist is supplied for scientific investigation and analytical purposes only.

Product Highlights

  • High Purity Standard – Produced using advanced synthesis and purification processes, batch-verified at 99.635% purity as reported on the CoA.
  • Research-Grade Quality Control – Subjected to rigorous third-party analytical testing for identity and purity verification via HPLC and mass spectrometry.
  • Secure Packaging – Delivered in sterile, sealed vials to preserve compound integrity throughout transport and storage.
  • Reliable Domestic Sourcing – Dispatched from within Australia in compliance with established laboratory handling and quality assurance protocols.

Intended Use

Retatrutide (20mg) is intended exclusively for laboratory research and scientific study. It is not intended for human or veterinary use, therapeutic application, or consumption. Researchers are responsible for ensuring proper handling, storage, and application in accordance with applicable regulations and institutional guidelines.

Storage & Handling

  • Store in a cool, dry environment away from direct light. Lyophilised vials should be kept at -20°C.
  • Reconstitute using appropriate laboratory-grade solvents (such as bacteriostatic water) where applicable.
  • Follow standard laboratory safety procedures when handling peptide compounds.

For researchers requiring a larger compound volume for extended experimental investigations, Retatrutide (20mg) provides the same verified purity and consistent formulation as the 10mg format in a single higher-capacity vial. Fast domestic shipping to all Australian states and territories, with batch-specific CoA information available in our CoA Library.

⚠ For in-vitro research and laboratory use only. Not for human consumption.

Frequently Asked Questions

What is Retatrutide?
Retatrutide is a synthetic peptide that acts as a triple agonist at the GLP-1, GIP, and glucagon receptors simultaneously. This tri-receptor activity profile is what separates it from earlier compounds like semaglutide (GLP-1 only) and tirzepatide (GLP-1/GIP), and is the basis for the significant fat loss results observed in Phase 2 clinical trials.
Why choose the 20mg vial over the 10mg?
The 20mg vial is the right call if you've already done a first run and know you want to continue. You get twice the compound for less than twice the price — better value per milligram, fewer reconstitution cycles, and no risk of running short mid-protocol. The compound, purity standard, and CoA verification are identical to the 10mg format. Think of the 10mg as the entry point and the 20mg as the commitment.
What is Retatrutide also known as?
In the research community, Retatrutide is commonly referred to as Reta peptide or simply Reta. It is also sometimes searched for as Reda peptide or Retatrude — both common misspellings. The shorthand r3ta peptide (using a numeral 3) also appears frequently in online research communities. One particularly common autocorrect error is 'ratatouille peptide' — if that's what brought you here, you're in the right place.
What does the research show about Retatrutide?
Phase 2 clinical trials observed mean body weight reductions of up to 24% over 48 weeks — significantly outperforming semaglutide and tirzepatide in head-to-head comparisons. Subjects showed dramatic reductions in waist circumference, visceral fat, and improvements across cardiometabolic markers including blood pressure and LDL cholesterol. The appetite suppression was described as profound, with energy intake reductions sustained throughout the full trial period.
How does Retatrutide work?
Retatrutide hits three separate pathways at once: GLP-1 receptors suppress appetite and slow digestion; GIP receptors improve insulin sensitivity and amplify fat loss; glucagon receptors increase energy expenditure by driving the liver to burn more fuel. Most weight loss compounds only target one or two of these. Retatrutide targets all three simultaneously — which is why the Phase 2 results were so far ahead of semaglutide and tirzepatide.
How does Retatrutide compare to semaglutide and tirzepatide?
Semaglutide (Ozempic/Wegovy) targets one receptor — GLP-1. Tirzepatide (Mounjaro) targets two — GLP-1 and GIP. Retatrutide targets three — GLP-1, GIP, and glucagon. In Phase 2 trials, Retatrutide produced a mean 24% body weight reduction over 48 weeks. Tirzepatide achieved around 20% in comparable studies, semaglutide around 14–15%. The glucagon component — which drives energy expenditure directly — is the key differentiator.
How do you reconstitute Retatrutide?
Retatrutide is supplied as a lyophilized powder and should be reconstituted with bacteriostatic water (BAC water) immediately before use. Inject the BAC water slowly into the vial, directing the stream down the inside wall. Gently swirl to dissolve — do not shake. Once reconstituted, store at 2–8°C and use within 28 days. For a full step-by-step walkthrough, see our complete peptide reconstitution guide.
How should Retatrutide be stored?
Store lyophilized Retatrutide vials at -20°C, away from light and moisture. After reconstitution, refrigerate at 2–8°C and use within 28 days. Do not freeze reconstituted solution.
Where to buy Retatrutide 20mg in Australia?
Retatrutide (20mg) is available through Aus Peptide Supply with fast domestic shipping to all Australian states and territories. Every vial is dispatched from within Australia — no customs delays, no international freight uncertainty. Each batch undergoes third-party analysis and the Certificate of Analysis is available to view in our CoA library.

Purchase Other Quantities

Retatrutide is also available in other vial sizes. Compare the current formats below and jump straight to the quantity that fits your protocol.

Retatrutide (10mg)

PEP-007-10MG

$139.99

Available to purchase now

View this quantity →

Retatrutide (20mg)

PEP-024-20MG

Current

$229.99

Currently unavailable

Viewing this quantity →

Retatrutide (30mg)

PEP-019-30MG

$329.99

Currently unavailable

View this quantity →

Retatrutide (60mg)

PEP-025-60MG

$549.99

Currently unavailable

View this quantity →