Retatrutide Price UK — Cost Per mg by Vial Size
Current retatrutide price in the UK: 20mg £89.00, 30mg £119.00 and 40mg £154.00 — that is £3.85–£4.45 per mg. Every vial is held in UK stock, independently HPLC tested with a batch-matched Certificate of Analysis, and shipped the same day when ordered by 1pm, Monday to Friday.
Vials are the cheapest way to buy retatrutide. For In Vitro Use Only — Not for Human Use.
Retatrutide price list & cost per mg
| Vial | Vial price | Cost per mg |
|---|---|---|
| Retatrutide 20mg | £89.00 | £4.45/mg |
| Retatrutide 30mg | £119.00 | £3.97/mg |
| Retatrutide 40mg | £154.00 | £3.85/mg |
Buy at these prices on the retatrutide product page — or read the full retatrutide vials guide.
Why the vial is the cheapest way to buy retatrutide
- Lowest cost per mg — down to £3.85/mg on the 40mg vial.
- Same peptide, same batch, same COA — only the delivery format differs.
- Same-day dispatch on orders by 1pm, Monday to Friday, Royal Mail Tracked 24.
- Supplied as a sealed lyophilised vial for in vitro research only.
How our retatrutide pricing compares
Cost per mg is the fair way to compare suppliers — a cheap headline price on a small vial is usually more expensive per mg once shipping is added. Our vials ship from UK stock, so there are no customs charges, no overseas reshippers and no seizure risk.
Compare across compounds on our tirzepatide vials, semaglutide vials and all peptide vials pages.
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View full shopFrequently asked questions
How much does retatrutide cost in the UK?
Retatrutide costs £89.00 for a 20mg vial, £119.00 for 30mg and £154.00 for 40mg at Peptides UK 4U — that is £4.45, £3.97 and £3.85 per mg respectively. All strengths are held in UK stock with same-day Royal Mail Tracked 24 dispatch (order by 1pm, Mon-Fri). For In Vitro Use Only — Not for Human Use.
How much is retatrutide per mg?
£4.45 per mg on the 20mg vial, £3.97 per mg on the 30mg vial and £3.85 per mg on the 40mg vial. Cost per mg falls as vial size rises because the vial, packaging and tracked postage are fixed costs spread over more peptide.
Does retatrutide get cheaper if I buy a bigger vial?
Yes. Going from the 20mg to the 40mg vial drops the cost from £4.45 to £3.85 per mg — around 13% cheaper per mg — and halves the number of orders and shipping charges over a study window.
Disclaimer: All products sold by Peptides UK 4U are for laboratory and research purposes only. They are not intended for human or animal consumption, diagnosis, treatment or prevention of any disease.