Order before 2pm for same-day dispatch
Retatrutide
Vial · Pen

Buy Retatrutide UK

Retatrutide in 10mg, 20mg, 30mg and 40mg, vial and pen. Held in the UK and dispatched same day before 2pm.

Choose size and format
£44.99
  • Order before 2pm for same-day dispatch
  • Royal Mail Tracked 24
  • Bank transfer
  • ≥99% purity

Buy Retatrutide in the UK — price and sizes

Retatrutide comes in 10mg, 20mg, 30mg and 40mg, as vial and pen, from £44.99. Order before 2pm on a weekday and it is dispatched the same day, tracked, and settled by bank transfer — nothing is charged automatically.

What is Retatrutide?

Retatrutide is a research peptide supplied by Peptiq. A synthetic triple agonist peptide acting at the GIP, GLP-1 and glucagon receptors. Across suppliers and literature the same compound appears as reta pen — all refer to the same material, which is worth knowing when comparing suppliers.

Also known as

Retatrutide · reta pen

Retatrutide formats: Vial and Pen

The pen arrives pre-filled and ready to use. The vial holds lyophilised powder for reconstitution. Each carries the same compound; the difference is presentation and quantity.

Individual products

Delivery and payment

Same-day dispatch before 2pm. Payment is by bank transfer — we send the bank details and your total by email once your order is placed.

Other compounds

All peptides

What the published research on Retatrutide covers

Identity. Investigational synthetic peptide acting as an agonist at three receptors: glucose-dependent insulinotropic polypeptide (GIP), glucagon-like peptide-1 (GLP-1) and glucagon. Development code LY3437943.

The best-documented compound in this catalogue, because it is an active pharmaceutical candidate rather than a legacy research peptide — its phase 2 results were published in the New England Journal of Medicine. It holds no marketing authorisation in any jurisdiction.

  1. Triple–Hormone-Receptor Agonist Retatrutide for Obesity — A Phase 2 Trial Jastreboff AM et al. · N Engl J Med, 2023;389(6):514-526 · Human, phase 2 randomised double-blind placebo-controlled · PMID 37366315 48-week trial in adults with obesity. The published design administered 1, 4, 8 or 12 mg subcutaneously once weekly against placebo; reported least-squares mean body-weight change at 24 weeks ranged from −7.2% (1 mg) to −17.5% (12 mg) versus −1.6% for placebo.
  2. Triple hormone receptor agonist retatrutide for metabolic dysfunction-associated steatotic liver disease: a randomized phase 2a trial Human, phase 2a · PMC11271400
  3. Structural insights into the triple agonism at GLP-1R, GIPR and GCGR manifested by retatrutide Structural biology · PMC11255275

References are to published literature and are summarised as reported by their authors, including the study model. They describe what was investigated — they are not instructions, and Peptiq supplies no usage guidance.

Retatrutide — frequently asked questions

What is Retatrutide?

Retatrutide is a research peptide supplied by Peptiq in vial and pen, in 10mg, 20mg, 30mg and 40mg. It is also listed as reta pen.

Where can I buy Retatrutide in the UK?

You can buy Retatrutide directly from Peptiq. We are a UK supplier, we ship tracked within the UK, and orders are settled by bank transfer — the details reach you as soon as your order is placed.

What sizes does Retatrutide come in?

10mg, 20mg, 30mg and 40mg, available as vial and pen.

How is my order delivered?

Same-day dispatch before 2pm. Dispatched once payment clears.

What purity is it?

≥99%, printed on the label alongside the compound and quantity.