Semaglutide pen price in the UK
| Format | Price | Cost per mg | What you get |
|---|---|---|---|
| 30mg Pre-filled Quick Pen | £144.98 | £4.83 | Pen, reconstituted 30mg fill, clicks-per-mg guide |
| 30mg Replacement Cartridge | £122.98 | £4.10 | Pre-filled cartridge for an existing pen |
| 30mg Vial | £94 | £3.67 — best value | Lyophilised vial — you reconstitute |
Pen and cartridge prices are all-in — the fill, the hardware and the bacteriostatic water are included. Cost per mg is the price divided by the milligrams of peptide in the fill. The 30mg vial is the lowest cost per mg; the pen premium buys you the reconstitution work and calibrated dial-a-dose hardware.
Why choose a pre-filled Semaglutide pen
- Reconstituted in a controlled UK environment — no measuring or sterile technique at your end.
- Dial-a-dose accuracy with a clicks-per-mg guide calibrated to your exact fill.
- Faster to start and easier to store than a vial and syringe kit.
- Cross-check any dose with the free reconstitution calculator.
New to pens? Read the full How to Use a Semaglutide Pen — UK step-by-step guide, or compare against semaglutide vials for a lower cost per mg.
Storage, purity & UK delivery
- Refrigerate at 2–8°C between uses, keep out of direct light, never shake.
- Once reconstituted, generally stable for around 4–6 weeks.
- Independently HPLC and mass-spec tested at 99%+ purity, with batch Certificates of Analysis.
- Cold-shipped in insulated packaging via tracked Royal Mail 24, dispatched same working day before 1pm.
Ozempic & Wegovy pens vs our Sema Quick Pen
Semaglutide is best known through Novo Nordisk's two branded products. Ozempic uses a multi-dose pre-filled FlexTouch pen with a dose dial; Wegovy uses a single-dose pre-filled FlexTouch pen (with a refillable cartridge-based pen in some markets). Ozempic, Wegovy and FlexTouch are registered trade marks of Novo Nordisk — Peptides UK 4U is not affiliated with, endorsed by or connected to Novo Nordisk, and does not supply either medicine.
| Ozempic / Wegovy FlexTouch | Sema Quick Pen | |
|---|---|---|
| What it is | Licensed prescription medicine (Novo Nordisk) | Reusable research device filled in our UK lab |
| Intended use | Human therapeutic use under prescription | In vitro laboratory research only |
| Device | Pre-filled FlexTouch pen (multi- or single-dose) | Reusable dial-a-dose pen, £122.98 refill cartridges |
| How you get it | Registered prescriber and pharmacy | Ordered online for research use, UK stock |
We make no claim of equivalence between the two. For in vitro use only — not for human use.
Related pages
- Buy Semaglutide UK — vial pricing and stock.
- Semaglutide vials UK — 10mg, 20mg and 30mg vial prices, cost per mg and how long each vial lasts.
- Semaglutide UK guide — GLP-1 receptor mechanism.
- Peptide pens UK and GLP-1 pens UK.
- Tirzepatide pen UK — the dual-agonist pen option.
Semaglutide pen UK — frequently asked questions
How much is a Sema pen in the UK?
A pre-filled Semaglutide 30mg Quick Pen is £144.98 all-in — that is the £94 vial plus the £34.99 pre-filled Quick Pen, already reconstituted with bacteriostatic water in our UK facility. A replacement cartridge format is £122.98.
Where can I buy a Sema pen in the UK?
Peptides UK 4U holds Semaglutide 30mg in UK stock and prepares it as a pre-filled Quick Pen. Choose the Pen format on the Semaglutide product page; orders placed before 1pm Monday to Friday are dispatched the same working day, cold-shipped by tracked Royal Mail 24.
What is a Sema pen?
A Sema pen is short-hand for a Semaglutide Quick Pen — a dial-a-dose injection pen pre-loaded with reconstituted Semaglutide 30mg. Each pen is filled under sterile conditions at a set concentration, so the clicks-per-mg are calibrated before it reaches you — no bacteriostatic water measuring, no mixing.
How many clicks per mg on a Semaglutide pen?
Every 30mg Semaglutide pen ships with a clicks-per-mg guide calibrated to the fill in your pen. Any dose can be cross-checked against our free online reconstitution calculator.
What strengths are the Semaglutide pens available in?
We prepare pens from the Semaglutide 30mg vial. 30mg is the only strength currently filled as a pen, and it covers an extended research protocol before a refill is needed.
How long does a Semaglutide pen last once opened?
Once reconstituted, Semaglutide is generally stable for around 4–6 weeks. Keep the pen refrigerated at 2–8°C between uses and away from direct light. Do not shake.
Do I need needles for the Semaglutide pen?
Yes — the pen takes standard screw-on pen needles. We recommend 31G 6mm needles and stock them, so you can add a pack at checkout.
Is a Semaglutide pen 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.
What are the Ozempic and Wegovy pens called?
Both are built on Novo Nordisk's FlexTouch pen platform. Ozempic is supplied as a multi-dose pre-filled FlexTouch pen with a dose dial, and Wegovy is supplied as a single-dose pre-filled FlexTouch pen (and, in some markets, a refillable pen with cartridges). Ozempic, Wegovy and FlexTouch are registered trade marks of Novo Nordisk. Peptides UK 4U is not affiliated with, endorsed by or connected to Novo Nordisk.
Is a Sema Quick Pen the same as an Ozempic or Wegovy pen?
No. Ozempic and Wegovy are licensed prescription medicines manufactured by Novo Nordisk for human use. Our Sema Quick Pen is a reusable research device we fill with reconstituted research-grade Semaglutide in our UK facility, supplied strictly for in vitro laboratory research. The two are not interchangeable and we make no claim of equivalence.