Buy Semaglutide in the UK
Semaglutide, an agonist at the GLP-1 receptor alone, supplied as lyophilised vials of 2mg, 5mg and 10mg. Research use only.
from £9.993 options
- In UK stock Sent from Britain
- Leaves the same day When ordered before 2pm
- Tracked shipping No charge over £75
- Certificate of analysis Available on request
Prices for Semaglutide start at £9.99 for the 2mg vial, and all of it is already in British stock at diluents.co.uk rather than sourced to order. There are 3 strengths to choose from (2mg, 5mg, 10mg), offered as vial. Order on a weekday before 2pm and the parcel leaves that day, tracked, in a box that gives no clue to its contents.
Because the parcel never leaves the country, nothing has to clear customs, no import charge falls due and nothing is held at a border. Each batch tests at ≥99% by HPLC, and a certificate of analysis for the stock you receive is available on request.
Tracked delivery costs £4.95, or nothing above £75. The ordering steps, one by one.
Every Semaglutide size and format
3 to choose from
Other products containing Semaglutide
Stacks and kits →
Semaglutide + Cagrilintide Blend
Elsewhere on the Metabolic & GLP-1 shelf
Whole shelf →
Retatrutide
Tirzepatide
MOTS-c
SLU-PP-332
AOD-9604
5-Amino-1MQ
What is Semaglutide?
Semaglutide is an agonist at a single receptor, GLP-1. Diluent supplies it unlicensed, as a compound for laboratory research.
Specification
| Receptor | GLP-1 |
|---|---|
| Purity | ≥99% by HPLC |
| Vial strengths | 2mg, 5mg, 10mg |
| Vial state | Lyophilised powder |
| Certificate | Available on request |
What research has been published?
Among the incretin agonists on this site, semaglutide has the longest completed clinical record. It served as the comparator arm in SURMOUNT-5 (doi:10.1056/NEJMoa2416394), the phase 3b head-to-head against tirzepatide.
Buying Semaglutide in the UK: where and how
How does ordering work?
Choose a strength, add it to the basket and go through checkout; no account is needed. An order confirmation comes through at once, and since the site never takes a card, the payment details arrive separately by email.
What difference does UK stock make?
Your Semaglutide is sent from a warehouse in Britain, so it skips customs, attracts no import charge and loses no days travelling from overseas. A courier collects it the same afternoon if the order is in before 2pm on a working day; the parcel then travels tracked in a plain outer box.
What do you receive?
| Purity | ≥99%, measured by HPLC |
|---|---|
| Labelling | Compound name, strength, format, purity and a research-use statement |
| Certificate of analysis | Available on request for the stock you receive |
| Delivery | UK addresses only, tracked. £4.95, or free over £75 |
| Returns | Within 14 days for sealed, unopened items, see the terms |
Semaglutide reconstitution
What ships is a dry, freeze-dried cake, and bacteriostatic water is what turns it into a solution. The volume you choose sets how strong that solution ends up. Water only spreads the contents out; it never adds to or takes from the milligrams sealed in the vial.
The figures above are volumes and concentrations of a solution; none of them is a dose, and no guidance on dosing, protocols or administration is given on this site.
The figures open on the 2mg vial with 2ml added, and they update as soon as either control changes. For the syringe-scale conversion, a comparison of the waters and the keeping time of a mixed vial, use the full reconstitution calculator.
| Vial | + 1ml | + 2ml | + 3ml | + 5ml |
|---|---|---|---|---|
| 2mg | 2 mg/ml | 1 mg/ml | 0.67 mg/ml | 0.4 mg/ml |
| 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 |
As a worked case, the 2mg vial with 2ml of bacteriostatic water comes to 1 mg/ml, which is simply the label milligrams divided by the millilitres added. Every number in the table is the concentration of a solution, never a dose. Dosage, protocol and administration guidance appear nowhere on this site.
What care does the vial need?
- A chilled vial should warm to room temperature first.
- Before every entry through the stopper, clean it with an alcohol swab.
- Let the water run down the inside wall of the glass; never squirt it onto the cake.
- Roll, never shake: foam means protein has been damaged, and rolling between the fingers avoids it.
- Expect a few minutes before it dissolves fully; a correctly mixed vial ends up clear.
Semaglutide storage
| Vial, still sealed | Keep it dark, dry and cool; the freezer suits long-term storage best. |
|---|---|
| After mixing | Refrigerate it upright and shaded. A mixed solution should never be frozen. |
What is its shelf life?
| Condition | Typical life |
|---|---|
| Unopened, in a −20 °C freezer | Years. No other condition preserves a lyophilised peptide as well |
| Unopened, in a fridge at 2–8 °C | Months |
| Unopened, at room temperature | Weeks. It copes with the time in transit but should not be kept like this |
| Mixed, in the fridge | Weeks rather than months. With bacteriostatic water added, the usual working figure is four weeks, and making that possible is the job of its preservative |
| Mixed, then frozen | Not recommended. Peptides are torn by ice crystals, and each freeze–thaw cycle compounds the damage |
These are the standard figures for lyophilised peptides in general; no stability study on a single batch produced them. Time is gained by keeping it cold and dry, and lost to damp, warmth, light and rough handling. A certificate of analysis is available on request.
Is Semaglutide legal in the UK?
Here it is supplied strictly as an unlicensed compound for laboratory research use only. No UK marketing authorisation covers Semaglutide and it is not a licensed medicine, nor is it intended for human or veterinary use, or for food.
Compounds of this kind are not controlled drugs, and they can lawfully be sold as laboratory material; it is selling or marketing them for use by people that the law does not allow. That boundary is why this site carries no dose, protocol, route, frequency or medical claim, and why an emailed request for one is declined as well.
Some molecules in this range are also present in a licensed medicine marketed under a brand name. Its authorisation covers only the finished product for which it was granted, not the molecule in any other setting. Read the full terms.
Questions about Semaglutide
Is it the same product as the branded medicine?
Only the molecule is shared. Ours lacks a marketing authorisation, and no pharmacy hands it out.
At how many receptors does semaglutide act?
One, GLP-1, against two for tirzepatide and three for retatrutide.
Which vial sizes can I buy?
Vials of 2mg, 5mg and 10mg.
What's better Semaglutide or retatrutide?
The Semaglutide sold here is an unlicensed research compound, supplied for laboratory research only, and HPLC assay puts it at ≥99% purity. Further down this page you will find the full specification alongside the published studies.
Where in the UK can I buy Semaglutide?
In the UK, diluents.co.uk supplies Semaglutide in 3 strengths from 2mg up to 10mg, as vials, priced from £9.99. Storing and posting it from the UK keeps the cold chain short, so nothing waits in a warm container while documents are sorted. The per-milligram cost falls as the size rises, from £5.00/mg on the smallest vial to £2.60/mg at the best rate, and each size lists its own figure. Because it is supplied as freeze-dried powder, the concentration is whatever you choose when it is mixed. It is also a component of 1 other product in the range. Orders placed before 2pm on a weekday go out the same day, tracked and in plain packaging. Each batch goes through third-party lab testing and returns an HPLC result of ≥99%; the certificate covering yours is available on request, and for the steps, see how to order.
Is Semaglutide cheaper than tirzepatide?
Prices begin at £9.99 with the 2mg, £5.00 a milligram. Each of the 3 options carries a separate price and a separate per-milligram rate. Delivery costs £4.95, and above £75 there is no charge at all.
How much bacteriostatic water goes into Semaglutide?
That is up to you, since the volume added is what sets the strength. On the 2mg vial, 2 mg/ml comes from 1ml, 1 mg/ml from 2ml and 0.67 mg/ml from 3ml, while the 2mg of material inside does not change. Every one of these figures is a concentration and none is a dose.
How do you store Semaglutide?
Unopened and dry, it lasts for years in a freezer at −20 °C, for months refrigerated at 2–8 °C and for weeks at room temperature; the colder and drier the conditions, the longer it keeps. Once mixed with bacteriostatic water it belongs upright in the fridge, where four weeks is the usual working figure. A mixed vial must never be frozen, because ice crystals rip peptides apart and every freeze–thaw cycle repeats the damage.
What is the legal status of Semaglutide in the UK?
Our Semaglutide is supplied strictly for laboratory research, as an unlicensed research compound and for no other purpose. No UK marketing authorisation covers the product we sell, so it is not a licensed medicine; it is also not for human or veterinary use. Nor are we a pharmacy.
Can I see a certificate for your Semaglutide, and what purity is it?
Yes. HPLC puts it at ≥99%, and on request we send the certificate of analysis that matches the material in your order. To check where current stock stands before you place an order, just ask and we will tell you.