Quick answer: in Ireland in 2026, Mounjaro costs from €229 for your first month with Slimbr (a €49 service fee plus medication from €180 at the 2.5 mg starting dose). After that, expect an all-in monthly cost of roughly €253–€455 depending on your dose and how you pay.
Because the dose typically steps up over your first few months, your monthly cost changes too — this guide walks through what you'll actually pay, month by month. If you want a provider-by-provider comparison instead, see our full Mounjaro prices in Ireland comparison. New to the medication itself? Start with our complete Mounjaro Ireland guide.
What makes up your monthly Mounjaro price
Every doctor-led provider's monthly figure is really two or three parts, and quotes only make sense once you know which parts they include:
- The medical service — your prescribing doctor, dose reviews and ongoing support. With Slimbr this is €49 in your first month, then €99 a month paid monthly (or €75 a month if you pay six months up front — ask our team about that option when you join).
- The medication itself — this is the part that changes with your dose. Mounjaro medication starts from €180 a month at 2.5 mg and rises as you titrate up.
- Cold-chain delivery — Mounjaro must be shipped refrigerated. Slimbr adds delivery at checkout rather than hiding it in the headline price; always check whether any quote you compare includes it.
Month by month: what a typical first six months costs
Mounjaro follows a stepped dosing schedule: the standard approach is 2.5 mg weekly for the first four weeks, then 5 mg, with any further increases made in steps of at least four weeks — always guided by your doctor, and only if you need them. That schedule is why your monthly cost usually changes over the first few months:
| Month | Typical dose | Typical all-in monthly cost |
|---|---|---|
| Month 1 | 2.5 mg (starting dose) | from €229 (€49 service + medication from €180) |
| Months 2–3 | usually 5 mg | from ~€276–€300 |
| Months 4–6 | 5–7.5 mg, doctor-guided | from ~€276–€369 |
Two important caveats. First, higher doses aren't a target — many people stay at 5 mg for months if their doctor is happy with how they're responding, and the schedule can be held or slowed at any point. Second, the figures above use the word from deliberately: they exclude cold-chain delivery, and the exact medication price depends on your dose that month.
Mounjaro price per month in Ireland, by dose
Here is the same picture organised by dose rather than by month — useful if you already know where you are in the titration schedule:
| Dose | Medication | All-in, paid monthly (€99 service) | All-in, 6 months up front (€75 service) |
|---|---|---|---|
| 2.5 mg | from €180 | from €279 | from ~€253 |
| 5 mg | ~€201 | ~€300 | ~€276 |
| 7.5 mg | ~€270 | ~€369 | ~€345 |
| 15 mg | ~€356 | ~€455 | ~€431 |
Intermediate doses (10 mg and 12.5 mg) are priced between the figures above — ask our team if you're on one of them. Your first month is the exception: the €49 first-month service fee means starting costs from €229 — less than continuing.
Across the Irish market, all-in monthly costs for the same doses typically run from about €253 to over €600 depending on the provider — the full comparison table breaks down Slimbr vs myBMI, ZAVA, Inish Pharmacy and others. If you'd rather have a doctor walk you through what your months would look like, start with the two-minute quiz.
How to bring the real monthly cost down
The sticker price isn't necessarily what the month really costs you, because two supports apply to doctor-led weight-loss treatment in Ireland:
- Health insurance: some Irish health insurance plans refund part of the cost of doctor consultations under their day-to-day or outpatient benefits. What's covered varies a lot by insurer and plan, so it's worth checking yours.
- Revenue's medical-expense relief: qualifying medical expenses — including doctor fees and prescribed medication — attract 20% tax relief when you claim them through Revenue. On a ~€300 month, that's roughly €60 back at year end for those who qualify.
We've verified how both work in practice — see our full guide to insurance cover and tax relief on weight-loss treatment in Ireland, including what to ask your insurer and how to keep the right receipts.
Did you know you can claim up to 75% back on your health insurance?
See how the claim works →What the monthly cost pays for
The monthly figure isn't just the pen. With a doctor-led programme, your month includes prescribing, monitoring and support — here's how it works with Slimbr:
What progress typically looks like
Everyone's response is individual, and a doctor will set expectations for your situation — but supervised treatment tends to follow a recognisable arc, which is also why budgeting for more than one month matters:
How Mounjaro compares with other injections, per month
Mounjaro (tirzepatide) is one of the most widely used weight-loss injections in Ireland, but it isn't the only one. Wegovy (semaglutide) is its main alternative, and monthly costs land in a broadly similar range once the doctor service and medication are counted together. If you're weighing up the options, our guide to what weight-loss injections cost in Ireland covers the alternatives side by side — and remember that which medication suits you is a clinical decision made with your doctor, not a price decision.
Mounjaro monthly cost FAQs (Ireland, 2026)
How much is Mounjaro per month in Ireland?
With Slimbr, your first month is from €229 (a €49 service fee plus medication from €180 at 2.5 mg). After that, all-in monthly costs typically run from about €253 to €455 depending on your dose and whether you pay monthly or six months up front. Cold-chain delivery is added at checkout.
How much is 2.5mg Mounjaro per month in Ireland?
The 2.5 mg starting dose costs from €180 a month for the medication. With Slimbr's service fee on top, that's from €229 all-in in your first month, and from ~€253–€279 a month after that depending on how you pay.
How much is 5mg Mounjaro per month in Ireland?
At the 5 mg dose — the standard dose from month 2, where many people stay — the medication is around €201 a month, making the typical all-in cost roughly €276–€300 a month with Slimbr depending on your payment plan.
Is it cheaper to pay for 6 months up front?
Yes — paying six months up front brings the service fee from €99 to €75 a month, a saving of €24 every month (about €144 over the six months). Ask our team about the 6-month option when you join.
Does the monthly price include delivery?
No — Mounjaro needs refrigerated (cold-chain) delivery, which Slimbr adds at checkout rather than building into the headline figure. Some other providers do the same, so always check whether a quoted monthly price includes delivery before comparing.
Can I claim tax relief on Mounjaro in Ireland?
Prescribed medication and doctor fees are qualifying medical expenses, so 20% tax relief is generally available when you claim through Revenue, provided you qualify — and some health insurance plans separately refund part of consultation costs. Our insurance and tax-relief guide explains both.
