Your Mounjaro price guide · October 2026
How Long Is Tirzepatide Good for at Room Temperature? (October 2026)
Once you have started using it, a Mounjaro (tirzepatide) KwikPen can be kept at room temperature, below the limit on the label, for up to 30 days (not above 30°C), after which it should be discarded.1 Unopened pens belong in the fridge until first use. Figures from other countries' labels do not apply to UK pens.
One pen. Four weekly doses.
New customers£40 off your first order with code FIRST40. Standard price £169.99.
From your first consultation to ongoing care.
- GPhC-registered UK pharmacy
- Prescriber assessment
- Temperature-controlled delivery
- Advice from our pharmacy team
Room temperature and tirzepatide
Most storage worries come down to two questions: is the pen already in use, and has it been kept below the labelled temperature limit?
- Price includes prescriber assessment and standard delivery — no consultation fees
- Orders approved by 3pm for next-day tracked delivery
- GPhC-registered pharmacy 9012878
- Needles and sharps disposal included
Compare UK Mounjaro Prices
Prices checked 12 October 2026
| Provider | 2.5mg | 5mg | 7.5mg | 10mg | 12.5mg | 15mg | Notes |
|---|---|---|---|---|---|---|---|
 £40 off first order | £129.99First orderReorders £144.99 | £178.99First orderReorders £193.99 | £239.99First orderReorders £254.99 | £250.99First orderReorders £265.99 | £279.99First orderReorders £294.99 | £289.99First orderReorders £304.99 | Consultation and next-day tracked delivery included |
| Boots Online Doctor | £179.00 | £199.00 | £259.00 | £299.00 | £319.00 | £339.00 | Free click & collect; cold-chain home delivery chargeable |
| Asda Online Doctor | £148.97 | £188.97 | £248.97 | £278.97 | £287.47 | £298.97 | Refrigerated delivery from £4.50; free click & collect |
| MedExpress | £179.99 | £189.99 | £249.99 | £279.99 | £299.99 | £309.99 | Delivery £2.90 to £3.95; new-customer discount at checkout |
| Simple Online Pharmacy | £169.00 | £199.99 | £259.99 | £279.99 | £299.99 | £319.99 | Delivery £4.99 per order |
| Oxford Online Pharmacy | £143.96 | £188.96 | £248.96 | £278.96 | £288.96 | £309.95 | Free consultation; cold delivery £5.49 |
| Chemist4U | £148.00 | £188.00 | £248.00 | £278.00 | £288.00 | £298.00 | Consultation included; free temperature-controlled delivery |
| Chemist Click | £163.99 | £173.99 | £232.99 | £259.99 | £279.99 | £299.49 | Cold-chain delivery charged; £20 off with code |
| Click Pharmacy | £169.99 | £189.99 | £239.99 | £269.99 | £289.99 | £299.99 | Free assessment; delivery £3.50 to £7.95 |
| Medino | £147.99 | £169.99 | £249.99 | £269.99 | £299.99 | £319.99 | Consultation and delivery included |
Prices collected weekly from each provider's published price list.
A quick overview
What to know
before you start.
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An in-use UK KwikPen can stay out of the fridge for up to 30 days (not above 30°C), then it should be discarded.
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Unopened pens go in the fridge at 2–8°C and keep until the printed expiry date.
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Never freeze a pen, and never use one that has been frozen.
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Day limits quoted online often come from other countries' labels, so rely on the UK leaflet.
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If an unopened pen has warmed up, check with the pharmacy before injecting.
In this guide
01 · The core answer
How long can Mounjaro stay out of the fridge?
An in-use pen can stay out of the fridge for up to 30 days (not above 30°C). Once in use, a pen can be kept out of the fridge at a temperature not above 30°C for up to 30 days, which is useful for short trips, and must then be thrown away.1 Keep the cap on to protect it from light.13
That window is for a pen you have already started. It is not a general allowance for any pen in any condition. For a closer look at the same rule, see our guide on how long Mounjaro lasts at room temperature.
02 · What to do next
Which situation are you in?
If your pen is in use and has been kept cool, simply count the days from the first injection and discard it when the window ends. A KwikPen holds four weekly doses, so a pen used on schedule is normally finished well inside the window.1
If your pen is unopened and has been out of the fridge, do not guess. Check with the pharmacy before using it rather than relying on a remembered day limit.1 If you need a replacement, you can review the Mounjaro pen and consultation options, and our weight loss clinic page explains how treatment works from the start.
03 · Unopened pens
Unopened pens: fridge first
Unopened pens should be kept in the fridge at 2–8°C and keep until the expiry date printed on the box.1 Never freeze them, and never use a pen that has been frozen.1
If an unopened pen has been out of the fridge, check with the pharmacy before using it rather than relying on a remembered day limit — figures circulating online often come from other countries' labels.1 That is why a number you see in a forum or a search snippet may not match your own pen's leaflet.
04 · Warm or hot pens
What if my tirzepatide got warm?
The in-use allowance applies only at a temperature not above 30°C, for up to 30 days after first use. A pen left in a hot car, in direct sun or on a radiator has gone outside the tested conditions, so sterility and potency are no longer assured.13 Do not inject from it. Contact the pharmacy that supplied it and explain how long and how warm it was.
The same caution runs the other way: hold luggage can fall below freezing, so pens travel in hand luggage.1 Our page on Mounjaro temperature covers both extremes.
05 · Does it go bad?
Does Mounjaro go bad at room temperature?
Once the in-use window has passed, a pen should be thrown away even if medicine remains.1 There is no reliable way to judge potency by eye, so the label dates matter more than appearance. Never use a pen past the printed expiry date or one that has been frozen.
Warmth does not make the medicine work better. Room temperature is simply a permitted short-term storage condition for a pen in use, which is useful for trips. Questions about injecting a cold pen are answered in our guide on whether a pen needs to warm up before injecting.
06 · Travel and refrigeration
Travelling, and going back in the fridge
In-use pens tolerate up to 30 days not above 30°C, so most holidays need no special arrangements; for hot climates use an insulated pouch.1 Carry pens in hand luggage, ideally in a cool bag with the prescription label or a copy of your prescription.1
Putting a pen back in the fridge does not reset the clock for the in-use window. See refrigerating Mounjaro after room temperature for detail, or leaving Mounjaro at room temp for everyday situations.
07 · Expiry and shelf life
Expiry dates and overall shelf life
Two dates matter: the expiry printed on the box for an unopened pen, and the end of the in-use window once you start. Whichever comes first decides when to stop.1 Note the first-use date on the pen or in your diary.
For the wider picture, read how long Mounjaro is good for and our summary on whether Mounjaro can be stored at room temp.
How ordering works
How ordering works at EverydayMeds
Three steps, with our pharmacy team alongside you.
Step 1: Online consultation — 5–10 minutes
Complete a confidential health questionnaire covering BMI, medical history and current medication. No payment is taken until you're approved.
Step 2: Prescriber review — usually same day
A UK registered prescriber checks your suitability against the licensed criteria (BMI ≥30, or ≥27 with a weight-related condition) and contraindications, and confirms your starting dose.
Step 3: Next-day tracked delivery
Dispensed by our GPhC-registered pharmacy in temperature-controlled packaging with needles and a sharps bin included. Orders approved by 3pm for next-day tracked delivery.
Prescription and dispatch follow clinical approval. Confirm current delivery options when ordering.
Afterwards you're not on your own: dose-change reviews are built in before each step up, our pharmacist team is available for side-effect questions, and repeat orders re-check suitability rather than auto-shipping.
Your questions, answered
Mounjaro price UK — frequently asked questions
Answers to common questions about Mounjaro prices, NHS access and ongoing treatment.
Ask our pharmacy teamHow long can tirzepatide be out of the fridge?
What happens if I use Mounjaro after 30 days?
What if my tirzepatide got warm?
How to tell if Mounjaro has gone bad?
What happens if you use expired tirzepatide?
Does tirzepatide lose potency over time?
Does Mounjaro work better at room temperature?
Clinically reviewed by
Mahommed Zunaid Ayub Patel
Superintendent Pharmacist
Accountable for the safe running of our registered pharmacy — from dispensing checks to delivery.
GPhC registration no. 2217101 · check the GPhC register
- Reviewed
- Last updated
- Next review
How we source our information
How we source our information: every clinical statement on this page is drawn from the sources below. Our prices are shown live from our pharmacy's product listings, and competitor prices show the date they were collected.
EverydayMeds is operated by OVIO Ltd · GPhC-registered pharmacy 9012878 · Registered premises, Leicester · Superintendent Pharmacist: Mahommed Zunaid Ayub Patel