Retatrutide 5mg / 10mg / 15mg / 20mg / 30mg / 60mg

Buy high-purity Retatrutide in Australia (5mg, 10mg, 15mg, 20mg, 30mg and 60mg). Third-party lab tested at >99% purity. Australian-domestic shipping, AUD pricing, supplied for laboratory research use only.

What is Retatrutide? Retatrutide (LY3437943) is a synthetic peptide studied as a triple agonist of the GIP, GLP-1 and glucagon receptors — a single molecule acting at three metabolic receptors at once. Optic Labs supplies HPLC-tested Retatrutide (>99% purity) as a lyophilised powder in 5mg to 60mg vials for laboratory research use only, dispatched Australia-wide from Sydney.

About Retatrutide

Retatrutide (LY3437943) is a synthetic peptide studied as a triple agonist of the GIP, GLP-1 and glucagon receptors. Its single-molecule, three-receptor profile has made it one of the most closely followed compounds in current incretin and metabolic receptor research.

Optic Labs supplies Retatrutide as a lyophilised (freeze-dried) powder in sealed research vials, distributed Australian-domestic from Sydney, NSW. Every batch is independently HPLC tested, and the Certificate of Analysis is published in our COA library. The product is supplied strictly for laboratory research, development or analytical use, not for human or veterinary administration.

Retatrutide sizes available in Australia

Retatrutide is available in six vial sizes: 5mg, 10mg, 15mg, 20mg, 30mg and 60mg. Larger vials suit longer research programmes and reduce the number of vials to reconstitute and track.

Product specifications

• Compound: Retatrutide (LY3437943)
• Class: GIP / GLP-1 / glucagon receptor triple agonist peptide
• Form: Lyophilised powder in sealed research vial
• Purity: >99% (third-party HPLC, COA available)
• Available sizes: 5mg, 10mg, 15mg, 20mg, 30mg, 60mg
• Storage (lyophilised): 2–8°C, protected from light
• Storage (reconstituted): 2–8°C, used within approximately 28 days
• Shipping: Australia-wide domestic dispatch from Sydney, NSW

Research background

• Receptor profile: Retatrutide is studied for its activity at three receptors at once (GIP, GLP-1 and glucagon), whereas earlier research compounds in the class, such as semaglutide (GLP-1) and tirzepatide (GIP / GLP-1), target one or two.
• Research interest: it is a common subject in comparative receptor-pharmacology and metabolic-pathway studies alongside single and dual agonists.
• Handling: like most research peptides, it is supplied lyophilised for stability and reconstituted in bacteriostatic water for laboratory use.

For a full research overview, see our Retatrutide triple agonist research guide and our AOD-9604 vs Retatrutide comparison. Related compounds: Tirzepatide, AOD-9604, Tesamorelin and 5-Amino-1MQ.

Reconstitution and handling

Wipe the stopper with an alcohol swab, add bacteriostatic water slowly down the inside wall of the vial, and let the powder dissolve without shaking. Refrigerate at 2–8°C once reconstituted. For worked dilution examples, see our reconstitution calculator guide and peptide storage guide.

Frequently asked questions

Where can I buy Retatrutide in Australia?

Optic Labs supplies research-grade Retatrutide from Sydney, NSW, with Australia-wide dispatch, AUD pricing and a published COA for every batch.

Is Retatrutide legal to buy in Australia?

Retatrutide is not approved by the TGA as a therapeutic good. Optic Labs supplies it strictly as a laboratory research compound, not for human consumption. For an overview of how the TGA treats research peptides, see our peptide legality and TGA compliance guide.

Is Retatrutide tested?

Yes. Every batch is third-party HPLC tested, and the Certificate of Analysis is available in our COA library.

How should Retatrutide be stored?

Keep lyophilised vials at 2–8°C away from light. Once reconstituted, keep refrigerated and use within approximately 28 days. Do not freeze reconstituted stock.

Where does Optic Labs ship to?

Optic Labs ships Australia-wide from Sydney, NSW. International shipping is not currently offered.

Legal disclaimer

All products on this site are supplied for laboratory research, development or analytical use only. They are not for human consumption, clinical use, or any diagnostic, cosmetic or veterinary application. These products and statements have not been evaluated by the Therapeutic Goods Administration (TGA) or the APVMA and are not intended to diagnose, treat, cure or prevent any disease. Optic Labs is not a compounding pharmacy or manufacturing facility as defined under the Therapeutic Goods Act 1989, and is not a registered provider of scheduled medicines or therapeutic goods.