Tirzepatide Vials UK — 20mg, 40mg & 60mg Research Vials
Lyophilised tirzepatide peptide vials, held in UK stock and dispatched the same working day when you order before 2pm. Three strengths — 20mg £90, 40mg £140 and 60mg £170 — each independently HPLC tested at 99%+ purity with a batch-matched Certificate of Analysis.
Prefer it ready to dose? The same vials can be prepared as a pre-filled Tirz pen — just switch the Format selector on the product page. For In Vitro Use Only — Not for Human Use.
Tirzepatide vial prices & cost per mg
| Vial | Price | Cost per mg | Best for |
|---|---|---|---|
| Tirzepatide 20mg | £90.00 | £4.50 | Short research windows, low-dose work |
| Tirzepatide 40mg | £140.00 | £3.50 | Most popular — balanced value |
| Tirzepatide 60mg | £170.00 | £2.83 | Lowest cost per mg, extended protocols |
All three strengths sit on one page — buy tirzepatide vials here.
Reconstitution — mg/mL and syringe units
We recommend a maximum of 3mL of bacteriostatic water per vial. Add it slowly down the inside wall, swirl gently and never shake.
| Vial | Bac water | Concentration | 2.5mg | 5mg | 7.5mg |
|---|---|---|---|---|---|
| 20mg | 2mL | 10mg/mL | 25 units | 50 units | 75 units |
| 40mg | 3mL | 13.33mg/mL | ≈19 units | ≈38 units | ≈56 units |
| 60mg | 3mL | 20mg/mL | 12.5 units | 25 units | ≈38 units |
Working with a different fill volume? Use the free reconstitution calculator.
How long a tirzepatide vial lasts
| Weekly amount | 20mg vial | 40mg vial | 60mg vial |
|---|---|---|---|
| 2.5mg | 8 weeks | 16 weeks | 24 weeks |
| 5mg | 4 weeks | 8 weeks | 12 weeks |
| 7.5mg | ≈2.5 weeks | ≈5 weeks | 8 weeks |
| 10mg | 2 weeks | 4 weeks | 6 weeks |
Vial vs pen — what actually changes
- Vial — lowest cost per mg, full flexibility, but you supply bacteriostatic water, syringes and sterile technique.
- Pen — we reconstitute and fill a dial-a-dose Quick Pen in our UK facility and send a clicks-per-mg card; one all-in price, nothing to mix.
- The compound, batch and COA are identical — only the delivery format differs.
Full pen detail is in the Tirzepatide pen UK guide, and the compound background is in the Tirzepatide UK guide.
Purity, COAs and UK dispatch
- Independently HPLC tested at 99%+ purity, every batch.
- Batch Certificates of Analysis published openly.
- Held in UK stock — same-day dispatch before 2pm, Royal Mail Tracked 24.
- Free needles and alcohol swabs included with every order.
- Discreet, plain outer packaging.
Other GLP research vials
New to tirzepatide? Start with What is Tirzepatide? or Tirzepatide vs Mounjaro. We also stock Retatrutide vials, Semaglutide vials and Cagrilintide vials. Compare them in our Retatrutide vs Tirzepatide and Tirzepatide vs Semaglutide guides.
Browse related products
- Tirzepatide Vials — 20mg / 40mg / 60mg
- Retatrutide — 10mg / 20mg / 30mg / 40mg
- Semaglutide — 10mg / 20mg / 30mg
- Bacteriostatic Water 10mL
Frequently asked questions
Where can I buy tirzepatide vials in the UK?
Peptides UK 4U holds lyophilised tirzepatide peptide vials in UK stock in 20mg, 40mg and 60mg. Every batch is HPLC tested at 99%+ purity with a batch-matched Certificate of Analysis, and orders placed before 2pm on a working day are dispatched the same day. For In Vitro Use Only — Not for Human Use.
How much is a tirzepatide vial in the UK?
Our tirzepatide vials are £90.00 for 20mg, £140.00 for 40mg and £170.00 for 60mg. That works out at £4.50, £3.50 and £2.83 per mg respectively, so the 60mg vial is the lowest cost-per-mg option we stock.
How much bacteriostatic water do I add to a tirzepatide vial?
We recommend a maximum of 3mL of bacteriostatic water per vial. A 20mg vial in 2mL gives 10mg/mL, a 40mg vial in 3mL gives 13.33mg/mL and a 60mg vial in 3mL gives 20mg/mL. Add the water slowly down the side of the vial and swirl gently — never shake.
How many units is 2.5mg of tirzepatide from a vial?
On a U-100 insulin syringe, 2.5mg is 25 units at 10mg/mL (20mg in 2mL), about 19 units at 13.33mg/mL (40mg in 3mL) and 12.5 units at 20mg/mL (60mg in 3mL). Our free reconstitution calculator works this out for any fill volume.
How long does a tirzepatide vial last?
It depends on the dose used per week. A 40mg vial covers 16 weeks at 2.5mg per week, 8 weeks at 5mg, or roughly 5 weeks at 7.5mg. Once reconstituted, tirzepatide is generally treated as stable for around 4 weeks refrigerated at 2–8°C.
Tirzepatide vial or pen — which should I choose?
The peptide is identical. A vial is the cheapest per mg and gives full dosing flexibility, but needs bacteriostatic water, a syringe and sterile technique. A pre-filled Quick Pen arrives ready to dose with a calibrated clicks-per-mg card. You can pick either on the product page using the Format selector.
Is tirzepatide a peptide?
Yes. Tirzepatide is a synthetic 39-amino-acid peptide with dual GIP and GLP-1 receptor activity. We supply it as a research-grade lyophilised peptide vial for in vitro laboratory research only.
Do tirzepatide vials come with a Certificate of Analysis?
Yes. Every batch we sell is independently HPLC tested and the batch-matched COA is published openly on our COA page, so you can verify the exact vial you received.
How are tirzepatide vials shipped in the UK?
Lyophilised vials are shipped in protective, discreet packaging via Royal Mail Tracked 24 from our UK premises, with same-day dispatch before 2pm. No customs, no overseas transit.
How should I store an unopened tirzepatide vial?
Store lyophilised vials in a cool, dark place — a fridge at 2–8°C is ideal for long-term storage. Once reconstituted, keep refrigerated, out of light, never frozen and never shaken.
Is it legal to buy tirzepatide vials in the UK?
Tirzepatide may be purchased and possessed in the UK for laboratory research purposes only. It is not a licensed medicine and is not intended for human or animal use. For In Vitro Use Only — Not for Human Use.
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.