Buy Retatrutide UK
A triple receptor agonist available in five strengths, as vials and pens. Research use only.
from £28.998 options
- In stock Ships from the UK
- Same-day dispatch Order before 2pm
- Tracked delivery Free over £75
- Certificate of analysis On request
Retatrutide is held in stock at incrementins.co.uk and dispatched from within the United Kingdom, priced from £28.99 for the 5mg vial. Offered across 5 strengths, 5mg, 10mg, 20mg, 30mg, 40mg, as vial and pen. Place an order before 2pm on a working day and it leaves the same day, tracked, inside plain outer packaging.
Since the parcel originates within the United Kingdom, there is nothing to clear through customs, no duty on import, and no consignment stuck at a border awaiting release. Each batch is tested to ≥99% purity by HPLC, and the certificate for the exact lot you are sent can be requested against the number shown on the label.
Shipping runs £4.95, free over £75, tracked end to end. See how ordering works.
Choose your Retatrutide
8 options
Retatrutide 40mg
Pen · £3.02/mg
Retatrutide is also supplied in
All combinations →
Dual Agonist Stack
Metabolic Stack
Pen Starter Kit
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Retatrutide Starter Kit
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What is Retatrutide?
Retatrutide binds the GIP, GLP-1 and glucagon receptors. Development code LY3437943. It carries no marketing authorisation in the UK or anywhere else.
Specification
| Development code | LY3437943 |
|---|---|
| Receptors | GIP, GLP-1, glucagon |
| Purity | ≥99% by HPLC |
| Vial strengths | 5mg, 10mg, 20mg, 30mg, 40mg |
| Pen strengths | 20mg, 30mg, 40mg |
| Vial state | Lyophilised powder |
| Certificate | On request, against the batch number |
What has Retatrutide been studied for?
The published record for Retatrutide includes 2 human studies, something only a handful of the compounds listed here can claim. Here is what each paper set out to examine, sorted by the model it relied on:
Human studies
- Triple–Hormone-Receptor Agonist Retatrutide for Obesity, A Phase 2 Trial, Human, phase 2 randomised double-blind placebo-controlled (PMID 37366315)
- Triple hormone receptor agonist retatrutide for metabolic dysfunction-associated steatotic liver disease: a randomized phase 2a trial, Human, phase 2a
Structural work
- Structural insights into the triple agonism at GLP-1R, GIPR and GCGR manifested by retatrutide, Structural biology
Each line records what a study looked at. None of it asserts an outcome in a person, and nothing on this site amounts to guidance on use.
Where and how to buy Retatrutide in the UK
How do you order?
Pick a strength from the list above, drop it into your basket and proceed to checkout. Setting up an account is not needed. A confirmation lands straight away and the payment details follow by email; no charge is taken on the site itself.
Why does UK stock matter?
Order Retatrutide here and it departs from within the United Kingdom. Nothing clears customs, no charge is levied on import and there is no overseas leg to wait through; an order in before 2pm on a working day goes out the same day on a tracked service, and the outer packaging says nothing about what is inside.
What arrives in the box?
| Purity | ≥99%, by HPLC |
|---|---|
| Labelling | Compound, strength, format, purity, research-use statement and a batch number |
| Certificate of analysis | On request, matched to your batch number |
| Delivery | Tracked, UK only. £4.95, free over £75 |
| Returns | 14 days on unopened, sealed items, terms |
Reconstituting Retatrutide
Retatrutide arrives as lyophilised powder. Adding bacteriostatic water brings it into solution, and the volume you add fixes the concentration. The vial holds what the label states whatever volume you choose.
Concentrations and volumes only. This site puts out no dosage, protocol or administration guidance, and no figure here is any of those.
Preset for 5mg and 2ml. Change either and the figures follow. The full reconstitution calculator handles syringe units, which water to reach for and how long a made-up vial lasts.
| Vial | + 1ml | + 2ml | + 3ml | + 5ml |
|---|---|---|---|---|
| 5mg | 5 mg/ml | 2.5 mg/ml | 1.67 mg/ml | 1 mg/ml |
| 10mg | 10 mg/ml | 5 mg/ml | 3.33 mg/ml | 2 mg/ml |
| 20mg | 20 mg/ml | 10 mg/ml | 6.67 mg/ml | 4 mg/ml |
| 30mg | 30 mg/ml | 15 mg/ml | 10 mg/ml | 6 mg/ml |
| 40mg | 40 mg/ml | 20 mg/ml | 13.33 mg/ml | 8 mg/ml |
Worked example: a 5mg vial with 2ml of bacteriostatic water comes to 2.5 mg/ml. Divide the milligrams on the label by the millilitres you add. These are concentrations, not doses; this site puts out no dosage, protocol or administration guidance.
Asked about mixing Retatrutide
How to mix Retatrutide?
Let the vial reach room temperature, swab the stopper, and send the bacteriostatic water down the inside wall rather than straight onto the cake. Swirl until the solution runs clear, never shake. The volume you pick is what fixes the concentration: for the 5mg vial, 1ml gives 5 mg/ml, 2ml gives 2.5 mg/ml, 3ml gives 1.67 mg/ml, 5ml gives 1 mg/ml.
How much bac water for 20mg Retatrutide?
The 20mg dissolves at whatever concentration the volume sets: 1ml gives 20 mg/ml, 2ml gives 10 mg/ml, 3ml gives 6.67 mg/ml, 5ml gives 4 mg/ml. That is a size we hold, so it has its own row in the table above and its own option in the picker.
How much bac water for 5mg Retatrutide?
The 5mg dissolves at whatever concentration the volume sets: 1ml gives 5 mg/ml, 2ml gives 2.5 mg/ml, 3ml gives 1.67 mg/ml, 5ml gives 1 mg/ml. That is a size we hold, so it has its own row in the table above and its own option in the picker.
How should it be handled?
- Let a cold vial warm to room temperature before you add anything.
- Wipe the stopper with an alcohol swab ahead of each entry.
- Send the water down the inside wall of the vial rather than onto the powder.
- Swirl gently. Do not shake, since foaming is protein damage you can see.
- Give the cake several minutes to dissolve. A finished solution is clear.
Storing Retatrutide
| Sealed vial | Cool, dry and away from direct light. A freezer suits long holding. |
|---|---|
| Once reconstituted | Refrigerated, upright, out of light. Never freeze a solution. |
| Pen | Turns up in solution, refrigerate from the outset. |
How long does it keep?
| Stored as | Keeps for |
|---|---|
| Sealed, frozen at −20 °C | Years, the longest-lasting state for a lyophilised peptide |
| Sealed, refrigerated at 2–8 °C | Months |
| Sealed, at room temperature | Weeks. Fine for transit, not for keeping |
| Reconstituted, refrigerated | Weeks rather than months. Around four weeks is the figure usually worked to with bacteriostatic water, which is what the preservative is there for |
| Reconstituted, frozen | Not advised, ice crystals damage peptides, and repeated freeze–thaw cycles add to it |
These are the general figures for lyophilised peptides, not a tested result for one particular batch. Dry and cold is what draws it out; water, warmth, light and agitation are what cut it short. The batch certificate of analysis can be requested.
Is Retatrutide legal in the UK?
Retatrutide is provided as an unlicensed research compound, for laboratory research use only. No UK marketing authorisation covers it, it is not a licensed medicine, and it is not offered for human use, veterinary use or use in food.
Compounds of this sort are not controlled drugs, and selling them as laboratory materials breaks no law. Offering or promoting them for human use is the part that does, and that is why not one page on this site sets out a dose, a protocol, a route, a frequency or a medical claim. Nor will we hand one over by email.
A number of compounds in this range share a molecule with a licensed medicine marketed under a brand name. The authorisation attaches to that finished product and travels no further than it, not to the molecule. Full terms.
Retatrutide questions
Is retatrutide approved in the UK?
No. It carries no marketing authorisation in the UK or anywhere else, and is provided here as a research compound.
What receptors does retatrutide act on?
GIP, GLP-1 and glucagon.
What sizes do you stock?
We keep vials at 5mg, 10mg, 20mg, 30mg and 40mg, and pens at 20mg, 30mg and 40mg.
Where can I buy Retatrutide online?
Retatrutide is available to buy in the UK from incrementins.co.uk, from £28.99, 5 strengths, 5mg to 40mg, as vials and pens. There is no overseas leg involved, so no import VAT turns up on your doormat a week on and no broker charges a fee to release it. The larger sizes come out cheaper per milligram, £1.82/mg at the best rate against £5.80/mg at the smallest, and each size displays its own figure. It arrives as lyophilised powder, so you fix the concentration when you reconstitute it. It also features in 5 other products on the site. Order before 2pm on a working day and it leaves the same day, tracked, in plain packaging. Every batch is third-party tested to ≥99% purity by HPLC with a certificate available for your batch, see how to order.
How much is Retatrutide?
From £28.99 for the 5mg, £5.80 per mg. That is 8 options, each priced on its own with its own rate per milligram. Delivery is £4.95, free over £75.
How to store Retatrutide?
Sealed as lyophilised powder it lasts for years at −20 °C, months refrigerated at 2–8 °C, and weeks at room temperature; dry and cold is what draws it out. Once reconstituted it belongs in a fridge, upright, and is usually worked to around four weeks with bacteriostatic water. Never freeze a solution: ice crystals damage peptides and repeated freeze–thaw cycles make it worse.
Is Retatrutide FDA approved?
Retatrutide is provided as an unlicensed research compound for laboratory research use only. No UK marketing authorisation covers it, it is not a licensed medicine, and it is not provided for human or veterinary use. We are not a pharmacy.
What purity is your Retatrutide, and can I see a certificate?
≥99%, determined by HPLC. A certificate of analysis for the batch you were sent can be requested against the batch number printed on the label, and we can let you know what current stock shows before you order.
References
- Triple–Hormone-Receptor Agonist Retatrutide for Obesity, A Phase 2 Trial. N Engl J Med, 2023;389(6):514-526. PMID 37366315
- Triple hormone receptor agonist retatrutide for metabolic dysfunction-associated steatotic liver disease: a randomized phase 2a trial
- Structural insights into the triple agonism at GLP-1R, GIPR and GCGR manifested by retatrutide
Each one is linked so the source can be read in full.