Everything on this site is supplied as a laboratory reference material for in-vitro research use only. Nothing here is a medicine, and nothing here is licensed for administration to humans or animals.
By entering you confirm you are aged 18 or over, that you are acquiring these materials for legitimate research purposes, and that you will not administer them to any person or animal.
Retatrutide
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What is Retatrutide?
Retatrutide (LY3437943) is a synthetic 39-amino-acid peptide that acts as a triple agonist at the GLP-1, GIP and glucagon receptors. It is studied in metabolic research as a single molecule engaging three incretin pathways simultaneously, and is supplied here as a lyophilised powder for in-vitro laboratory investigation only.
Each vial is produced by solid-phase peptide synthesis, purified by reverse-phase HPLC and verified by mass spectrometry before release. Purity and identity for the batch you receive are published on the certificate of analysis above.
When buying Retatrutide from any UK supplier, check that a batch-specific certificate of analysis is available before ordering — ours is downloadable directly from this page.
Retatrutide reconstitution reference
Reconstitute with bacteriostatic water. The table shows the concentration and syringe volume produced by common dilutions of a 20mg vial, for reference when preparing research stock solutions.
Storage & handling
Frequently asked questions
Is Retatrutide third-party tested?
Yes. Every batch is tested by an independent laboratory for HPLC purity and mass-spectrometry identity. The certificate for the batch you receive is linked on this page before you buy — no account needed.
How should I reconstitute Retatrutide?
Add bacteriostatic water slowly down the inside wall of the vial, aimed away from the powder, then swirl gently until clear. Never shake. Use the reconstitution calculator to work out the volume for your target concentration.
How long does Retatrutide last once reconstituted?
Refrigerated at 2–8 °C and protected from light, a reconstituted vial is generally used within 28 days. Unopened lyophilised powder stored at −20 °C is stable far longer.
How quickly does it ship?
Orders placed before 3pm on a working day are dispatched the same day by Royal Mail 24h tracked. EU orders go by Royal Mail, typically 3–5 working days.
Where can I buy Retatrutide in the UK?
Connect Peptides stocks Retatrutide as a lyophilised vial, HPLC-verified with a batch certificate of analysis, dispatched within 24 hours on UK orders.
Is Retatrutide available as a pen instead of a vial?
Yes — see the Retatrutide Pen for a ready-to-use, prefilled format that needs no reconstitution.
