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RestockedRetatrutide 10mg / 20mg / 30mg / 40mg / 60mg research peptide vial — buy Retatrutide 10mg / 20mg / 30mg / 40mg / 60mg UK | Peptides UK 4U
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Retatrutide 10mg / 20mg / 30mg / 40mg / 60mg

Also known as Reta

Investigational triple agonist targeting GLP-1, GIP and glucagon receptors — 20mg, 30mg, 40mg and 60mg lyophilised vials at 99%+ purity for in vitro research.

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Best value · Same-day dispatch by 1pm Mon-Fri
Lowest cost per mg - sealed lyophilised vial
£49.99 – £209.99

Made to order: we reconstitute your peptide under sterile conditions and load it into a dial-a-dose Quick Pen, sent in discreet packaging with screw-on needles and a clicks-per-mg guide. Allow extra prep time versus a vial.

£49.99 – £209.99

For In Vitro Use Only — Not for Human Use

Lab-Verified Purity
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99%+
HPLC purity
Mass-Spec
Identity verified
Batch CoA
Independent lab

Factory independent testing is reviewed for every batch, and we go the extra mile with our own independent HPLC & mass-spec testing in Europe. Where our certificate has been published, it is batch-numbered so you can match it to your vial.

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99%+ HPLC purity
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UK-registered Ltd
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Overview

Retatrutide (LY-3437943) is an investigational triple-receptor agonist that combines activity at the GLP-1, GIP and glucagon receptors in a single 39-residue peptide backbone. Supplied as a sterile lyophilised powder in 20mg, 30mg, 40mg and 60mg vials, each batch is verified to 99%+ purity by RP-HPLC and mass spectrometry.

Research

Retatrutide is used in vitro to study the combined pharmacology of incretin (GLP-1, GIP) and glucagon receptor signalling in a single molecule. Research groups compare it head-to-head against dual agonists (e.g. Tirzepatide) to characterise receptor bias, cAMP response, and peptide stability across long incubation windows.

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