In stock · Same-day dispatch before 12PM AEST
Buy Retatrutide Australia
Research-grade Retatrutide (LY3437943) — the GLP-1/GIP/glucagon triple receptor agonist — supplied as lyophilised vials at 99.738% HPLC purity, independently tested and COA verified. Available in 10mg and 20mg strengths. Dispatched same business day from our Melbourne warehouse on orders confirmed before 12PM AEST.
Retatrutide Pricing — Australia
Retatrutide 10mg
$139.99
AUD · per vial
10mg lyophilised vial · 99.738% HPLC purity · COA verified · same-day dispatch
Buy Retatrutide 10mg →
Retatrutide 20mg
$239.99
AUD · per vial · best $/mg
20mg lyophilised vial · double strength · same purity standard · same-day dispatch
Buy Retatrutide 20mg →
Best ValueResearch Bundle
From $259.99
AUD · everything you need
2× Retatrutide vials + BAC water + 31G insulin needles · save vs buying separately
Buy the bundle →
Free standard shipping on all orders over $199 AUD. Wholesale tiered pricing available — see /wholesale.
Why buy Retatrutide from Peptide Warehouse Australia
Independently tested every batch
Our current Retatrutide batch (PW-260301) is tested by Janoshik Analytical — HPLC for 99.738% purity, mass spectrometry for identity confirmation, sterility screening. Full COA at /coa.
Australian-owned, Melbourne stock
Stock physically held in our Melbourne warehouse — no overseas drop-shipping, no customs risk. Same-day dispatch on orders confirmed before 12PM AEST via Australia Post tracked.
Five payment methods incl. PayPal
PayID and Bank Transfer (both fee-free), Credit/Debit Card, and PayPal. PayPal availability is unusual in this category and gives you an extra layer of buyer protection.
Discreet plain packaging
All Retatrutide orders ship in plain Australia Post packaging with no external branding. Tracked Standard (2–6 days) or Express (1–3 days). Free over $199 AUD.
What is Retatrutide?
Retatrutide (development code LY3437943) is a 39-amino acid acylated synthetic peptide developed by Eli Lilly. It is the first triple receptor agonist in the GLP-1 class — engaging GLP-1, GIP, and glucagon receptors simultaneously. Earlier-generation compounds engage one (semaglutide) or two (tirzepatide) of these targets; Retatrutide engages all three.
In published Phase 2 clinical research, Retatrutide demonstrated dose-dependent effects on body weight and energy homeostasis, with the 12mg arm of the TRIUMPH-2 trial reporting up to 24.2% body weight reduction over 48 weeks. It remains a research compound — not yet TGA-approved for therapeutic use — and is supplied here strictly for in-vitro laboratory research.
For deeper context, read our research blog: Retatrutide vs Tirzepatide vs Semaglutide, Phase 3 TRIUMPH Results 2026, and Retatrutide Price Australia 2026.
Frequently Asked Questions
Retatrutide is available in Australia from Peptide Warehouse Australia (auspeptidewarehouse.com.au), an Australian-owned research peptide supplier based in Melbourne. We stock Retatrutide as both 10mg and 20mg lyophilised vials at 99.738% HPLC purity, dispatched Australia-wide via Australia Post with full tracking. Orders placed before 12PM AEST dispatch the same business day from our Melbourne warehouse.
Retatrutide 10mg is $129.99 AUD per vial. Retatrutide 20mg is $199.99 AUD per vial. The Retatrutide Research Bundle (2× 10mg vials + BAC water + 31G insulin needles) is priced as a value pack — see the bundle page for the live discount. Tiered wholesale pricing is available for verified labs, clinics, and resellers — submit an enquiry via our /wholesale page.
Our current Retatrutide batch (PW-260301) is independently tested at 99.738% HPLC purity by Janoshik Analytical. The Certificate of Analysis includes HPLC purity quantification, mass spectrometry identity confirmation, and sterility screening results. The full COA is publicly viewable in our /coa library — match the lot number on your vial to the COA on the site to verify.
Yes — Retatrutide is legal to purchase in Australia for legitimate in-vitro laboratory and research purposes. It is not listed as a scheduled substance under the Therapeutic Goods Act or Poisons Standard when sold for research use. Purchasers must be 18+ and confirm research-only intent at checkout. It is not TGA-approved for human consumption, therapeutic, or veterinary use. See our /legal page for full information.
Orders placed before 12PM AEST on a business day are dispatched the same business day from our Melbourne warehouse via Australia Post with full tracking. Orders after 12PM AEST dispatch the next business day. Standard Post (2–6 business days) is $8.99; Express Post (1–3 business days) is $13.99. Free standard shipping on orders over $199 AUD. All packages are sent in plain discreet packaging.
Yes. LY3437943 is Eli Lilly's internal development code for Retatrutide — both names refer to the same compound. Retatrutide is a 39-amino acid acylated peptide and triple receptor agonist (GLP-1, GIP, and glucagon receptors). Our research-grade Retatrutide is supplied as lyophilised powder at 99.738% HPLC purity. Not for human consumption — for research use only.
We accept PayID and Bank Transfer (both fee-free), Credit/Debit Card (Visa, Mastercard, Amex), and PayPal. PayPal acceptance is unusual in this category and provides an extra layer of buyer protection at checkout. All payment fees are displayed transparently before you confirm your order.
Yes. Lyophilised Retatrutide must be reconstituted with bacteriostatic water (BAC water) before use in research protocols. You'll also need 31G insulin syringes for precise transfer. Both are available on the same order — see /products/bac-water-10ml and /products/insulin-needles-31g. For convenience, the Retatrutide Research Bundle includes everything pre-packed.
Ready to Order Retatrutide?
10mg and 20mg vials in stock. Same-day dispatch from Melbourne on orders confirmed before 12PM AEST. Full COA at /coa.
Research Use Only: Retatrutide is supplied strictly for in-vitro laboratory and research purposes. It is not approved or intended for human consumption, therapeutic, or veterinary use, and has not been evaluated by the TGA for therapeutic use. You must be 18 years of age or older to purchase.