What we do
Retatrutide has gone from a Phase 2 headline to one of the most searched peptides in the UK, while the market around it is crowded and hard to judge. We collect the public information that lets you compare suppliers like for like: prices per mg, vial sizes, independent test reports, business details and delivery terms.
How suppliers are scored
- Lab testing & transparency (35%): independent, batch-specific COAs; contaminant screens.
- Business trust (20%): UK address, company details, trading history, clear terms.
- Price per mg (20%): listed GBP price ÷ vial content.
- Range & availability (15%): vial sizes offered and in stock.
- Delivery & support (10%): dispatch speed, tracking, guides and contact options.
We use only information suppliers publish themselves. We can’t verify the contents of any vial, so a published COA is evidence, not proof. Prices and stock are re-checked automatically every day; the last check was on 9 October 2026.
How we are funded
Some outbound links are affiliate links. If you buy after clicking one, we may earn a commission. Suppliers can’t pay for a listing, a higher score or a better position. See our affiliate disclosure.
Editorial standards
News articles cite primary sources (trial registries, peer-reviewed papers, company releases and regulators) wherever possible. We don’t give medical advice. Read our disclaimer.