Retatrutide
Also known as LY3437943, triple agonist
Retatrutide is an investigational molecule targeting three receptors: GIP, GLP-1 and glucagon. It is in clinical trials and is not approved anywhere in the world. That is the single most important fact about it: unlike semaglutide and tirzepatide, its trial programme has not concluded and its long-term safety profile is not established.
Who has Retatrutide in stock
| Supplier | Listing | Price | Per mg | |
|---|---|---|---|---|
| EuroPeptidesBest valueEU | Triple Receptor Agonist 10mg | €89.90 | €8.99 | In stock, go |
| Certa PeptidesEU and UK | GLP-3 Reta | €44.49 | – | In stock, go |
| Baltic PeptidesEU and UK | BP-3 RT | €49.99 | – | In stock, go |
| HiPeptidesUK | GLP-3 (Reta) | £89.99 | – | In stock, go |
Live stock is checked hourly at 10 suppliers. A further 7 vetted suppliers have no live feed yet, so we never show them as in stock. We earn a commission from some supplier links when you buy. It costs you nothing extra and never changes the order, which is by price per mg.
What it has been studied for
- Phase 2 trials in obesity and type 2 diabetes
- Ongoing Phase 3 programme
- Comparative effect against dual and single agonists
Evidence level: Early human data. Human data exists, but read the details above before assuming it applies to you.
What happened in human trials
Still in trials and not licensed anywhere. Stomach side effects were the most common and rose with dose. Resting heart rate rose with dose. Phase 3 reported skin tingling or burning (dysaesthesia) in roughly 6% to 21% on the top dose depending on the trial, and about 13% in the main obesity trial.
Prohibited in drug-tested sport under the World Anti-Doping Code.
UK legal status
Not licensed anywhere. It is an investigational medicinal product. There is no lawful route to it outside a clinical trial, and material sold online as retatrutide carries no assurance of identity, purity or sterility.
Handling
Not applicable to any lawfully obtained product, since the only legitimate supply is within a trial where it is handled by the study site. Not lawfully supplied to individuals.
Questions
Is retatrutide approved?
No. It is in clinical trials and is not approved in the UK, the EU, the United States or anywhere else. Its trial programme has not concluded.
Why do so many sites sell it then?
Because there is demand ahead of approval. Anything sold outside a trial is unlicensed, and the buyer has no way to verify what is actually in the vial. That is the position, stated plainly.
Before you buy anything, run the four-question check for red flags that apply to you.