
Metabolic Research
Retatrutide
20mgBuy retatrutide peptide from UK stock, sent the same day you order. 99.99% pure, with the signed lab certificate on this page.
Vial size
Quantity
Handling
Retatrutide storage
- Sealed vial
- -20°CProtect from light
- Before opening
- Room temperatureStops condensation getting in
- Once reconstituted
- 2–8°CUse within 28 days
- Shipping
- Tracked 24Royal Mail, dispatched the same day

The range
One vial, or the set.
Every vial in the range is lyophilised, labelled and lot-numbered the same way, with the certificate for its lot linked from its own product page. Pictured: BPC-157, TB-500, GHK-Cu, Glow and Retatrutide.
Browse the rangeRetatrutide UK: common questions
- What's the retatrutide price for each size?
- 10mg £49.99, 20mg £89.99, 30mg £124.99. Same batch, same 99.99% purity. The 30mg is the cheapest per mg, at £4.17.
- Is the retatrutide lab tested?
- Yes. An independent lab tests every batch for purity (HPLC) and identity (mass spectrometry). The signed certificate is on this page to read before you buy.
- How fast is delivery?
- Same day, from Manchester, whenever you order. Royal Mail Tracked 24 aims for next working day delivery. Free over £40, otherwise £3.99.
- What else do I need with retatrutide?
- Bacteriostatic water, to dissolve the freeze-dried powder. We stock it, and you can add it from the Storage section above.
- How should I store retatrutide?
- Sealed vial: -20°C, away from light. Once reconstituted: 2-8°C, use within 28 days, and don't refreeze.
- Can I buy retatrutide in the UK?
- Yes, for laboratory research. Retatrutide isn't a controlled drug or a licensed medicine, so it's sold for research use only, not for human use. You must be 18 or over.
About the Retatrutide peptide
Retatrutide (LY3437943) is a synthetic 39-amino-acid peptide developed by Eli Lilly. It acts on three receptors at once: GLP-1, GIP and glucagon. We sell it as freeze-dried powder in 10mg, 20mg and 30mg vials, for laboratory research only.
Research areas
- GLP-1, GIP and glucagon receptor signalling
- cAMP and β-arrestin recruitment assays
- Adipocyte and hepatocyte in-vitro models
- Comparative incretin receptor pharmacology
Further reading on Retatrutide
Every batch independently tested by an accredited independent laboratory before dispatch. The signed certificate for this lot is published on this page.
Legal notice
This product is sold strictly for in-vitro laboratory research purposes only. It is not approved for human or veterinary use, is not a drug, food, or cosmetic, and should not be misused as such. UK Peptides accepts no liability for misuse. By purchasing you confirm you are a qualified researcher aged 18 or over.
Retatrutide 20mg
£89.99


