Semaglutide price in the UK
| Vial | Price | Cost per mg | Format |
|---|---|---|---|
| Semaglutide 30mg | £94 | £3.67 | Lyophilised vial, or pre-filled pen add-on |
30mg is the only Semaglutide strength we stock — we do not supply 5mg or 10mg vials.
Semaglutide vial life vs Ozempic/Wegovy-equivalent dosing
Researchers often compare Semaglutide allocations to the Ozempic / Wegovy dose range. The table below shows how long each vial lasts at common weekly research allocations, and the equivalent weekly cost.
How long does a Semaglutide vial last?
Weekly research allocations matched to the Ozempic / Wegovy dose range. See vial life and weekly cost for each strength.
| Weekly allocation | 10mg vial £49.99 | 20mg vial £72.99 | 30mg vial £94.00 | Best value |
|---|---|---|---|---|
| 0.25mg/week Ozempic/Wegovy-equivalent | 40 weeks £1.25/week | 80 weeks £0.91/week | 120 weeks £0.78/week | £0.78/week £94.00 30mg vial Save 98% vs Ozempic/Wegovy |
| 0.5mg/week Ozempic/Wegovy-equivalent | 20 weeks £2.50/week | 40 weeks £1.82/week | 60 weeks £1.57/week | £1.57/week £94.00 30mg vial Save 96% vs Ozempic/Wegovy |
| 1mg/week Ozempic/Wegovy-equivalent | 10 weeks £5.00/week | 20 weeks £3.65/week | 30 weeks £3.13/week | £3.13/week £94.00 30mg vial Save 92% vs Ozempic/Wegovy |
| 1.7mg/week Ozempic/Wegovy-equivalent | 5w 6d £8.50/week | 11w 5d £6.20/week | 17w 5d £5.33/week | £5.33/week £94.00 30mg vial Save 86% vs Ozempic/Wegovy |
| 2.4mg/week Ozempic/Wegovy-equivalent | 4w 1d £12.00/week | 8w 2d £8.76/week | 12w 4d £7.52/week | £7.52/week £94.00 30mg vial Save 81% vs Ozempic/Wegovy |
For in vitro research use only — not for human use. Ozempic and Wegovy are licensed prescription medicines; this table is a cost-per-milligram illustration for researchers, not medical advice or a recommendation to replace a prescription. The comparator price is editable so you can match the figure you see quoted by UK private clinics.
Calculations assume the entire vial is allocated at the stated weekly dose. Actual vial life depends on the exact protocol.
Reconstituting Semaglutide
- Wipe the stopper with an alcohol swab and allow it to dry.
- Add bacteriostatic water slowly down the inside wall of the vial.
- Swirl gently until the solution is completely clear — never shake.
- Label the vial with the concentration and reconstitution date.
- Store at 2–8°C, protected from light, and avoid repeated freeze-thaw cycles.
For the exact bacteriostatic water volume and unit measurements for a 30mg vial, use the free peptide reconstitution calculator.
Purity, testing & UK delivery
- Independently HPLC and mass-spec tested at 99%+ purity.
- Batch Certificates of Analysis published openly.
- UK-held stock — same working day dispatch before 2pm, Mon–Fri.
- Cold-shipped in insulated packaging via tracked Royal Mail 24.
- Plain, discreet outer packaging with no product names on the label.
Read more before you order
- Semaglutide vials UK — 10mg, 20mg and 30mg vial prices, cost per mg and how long each vial lasts.
- Semaglutide UK guide — how the GLP-1 receptor mechanism is studied.
- Semaglutide pen UK — pre-filled Quick Pens.
- Tirzepatide vs Semaglutide and Retatrutide vs Semaglutide.
- Semaglutide research overview.
Semaglutide UK — frequently asked questions
Where can I buy Semaglutide in the UK?
Peptides UK 4U holds Semaglutide 30mg in UK stock. Orders placed before 2pm Monday to Friday are dispatched the same working day by tracked Royal Mail 24, in plain unbranded packaging.
What Semaglutide strength do you sell?
We supply a single strength — Semaglutide 30mg — as a lyophilised, tamper-sealed research vial at £94. We do not stock a 10mg or 5mg vial.
How much does Semaglutide cost in the UK?
The Semaglutide 30mg vial is £94, which works out at approximately £3.67 per milligram.
What purity is your Semaglutide?
Every Semaglutide batch is independently tested by RP-HPLC at 99%+ purity with mass-spec confirmation. The batch number on the vial matches a Certificate of Analysis published on our COA page.
How is Semaglutide reconstituted?
Add bacteriostatic water slowly down the inside wall of the vial and swirl gently until the solution is completely clear — never shake. Use the free peptide reconstitution calculator for the exact volume and unit measurements for a 30mg vial.
Can I get Semaglutide as a pre-filled pen?
Yes. We reconstitute the vial under sterile conditions in our UK facility and cold-ship it ready-to-use as a pre-filled Quick Pen. See the Semaglutide pen page for details.
Is Semaglutide legal to buy in the UK?
Semaglutide is legal to buy and possess in the UK for laboratory research purposes. It is not a licensed medicine in the UK and is supplied strictly for in vitro research use only — not for human or animal consumption.
How is Semaglutide shipped in the UK?
Cold-shipped in insulated packaging via tracked Royal Mail 24, in discreet plain outer packaging. Order before 2pm Monday to Friday for same working-day dispatch.