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Mounjaro has quickly become the most talked-about weight-loss treatment in Ireland. Here is exactly what it costs in 2026, how to get it legally and safely, and what the evidence says you can realistically expect.
Mounjaro is the brand name for tirzepatide, a once-weekly injectable medicine made by Eli Lilly. It is licensed for both type 2 diabetes and weight management in adults. What makes it different from earlier injections is that it acts on two gut hormone receptors at once, GIP and GLP-1 (it is the first dual-agonist of its kind). These hormones reduce appetite, slow how quickly the stomach empties, and help you feel full for longer, so most people naturally eat less without constant willpower battles.
Because it works on two pathways rather than one, tirzepatide has produced some of the largest average weight reductions seen in clinical trials for a non-surgical treatment.
Yes. Mounjaro is licensed and available in Ireland on private prescription. You cannot buy it over the counter; it is a prescription-only medicine, and a registered doctor or prescriber must first confirm that it is appropriate and safe for you.
The key thing Irish patients need to understand is funding. Mounjaro is not currently reimbursed by the HSE or covered by the Medical Card for weight loss, so most people pay privately for the medication.
In short: Mounjaro is available in Ireland, legal, and licensed, but it is private-pay for weight loss. You need a prescription, and you can get assessed quickly online without waiting for a GP appointment.
Mounjaro is priced per pen, and the cost increases as your dose increases during titration. Eli Lilly increased the list price during 2025, so figures you may have seen in older articles are now out of date. Pharmacies also set their own dispensing prices, which is why the same dose can cost noticeably more in one pharmacy than another.
As a guide for mid-2026, expect monthly medication costs in roughly the following ranges (always confirm the live price at your pharmacy or consultation):
| Dose (per month) | Typical Irish price range* | Stage |
|---|---|---|
| 2.5 mg | €150 to €185 | Starting dose (weeks 1 to 4) |
| 5 mg | €185 to €220 | First maintenance step |
| 7.5 mg | €210 to €250 | Titration |
| 10 mg | €230 to €270 | Titration |
| 12.5 mg to 15 mg | €250 to €300+ | Higher maintenance |
*Indicative ranges for mid-2026 across Irish online and high-street pharmacies; prices change and vary by pharmacy. On top of the medication, you will usually pay a small consultation fee for the prescribing assessment; online services typically charge around €20.
"Cheapest" depends on three things: the pharmacy's dispensing price and the consultation fee. A few practical tips:
There are two routes: your own GP or a regulated online doctor service. Both require a clinical assessment because Mounjaro is prescription-only.
Online services such as SmartScripts exist to make steps 1 and 2 fast. You can usually be assessed at home the same day for a consultation fee of around €20, rather than waiting weeks for an appointment.
For weight management, tirzepatide is generally considered for adults with a BMI of 30 or above, or a BMI of 27 to 30 alongside a weight-related health condition (such as high blood pressure, type 2 diabetes or sleep apnoea). It is not suitable for everyone; for example, it is not used in pregnancy or breastfeeding, and certain medical histories rule it out. The prescriber's assessment exists precisely to check this. SmartScripts does not prescribe medication for patients who have type 2 diabetes as we believe this is best dealt with by your primary GP.
Mounjaro is started low and increased gradually, this "titration" minimises side effects and lets your body adjust. A typical schedule looks like this, though your prescriber will personalise it:
| Phase | Dose | Duration (typical) |
|---|---|---|
| Start | 2.5 mg once weekly | 4 weeks |
| Step up | 5 mg once weekly | 4+ weeks |
| Adjust as needed | 7.5 to 10 mg once weekly | As directed |
| Maintenance | 10 to 15 mg once weekly | Ongoing |
It is injected under the skin (abdomen, thigh or upper arm) once a week, on the same day each week. You should never increase your dose faster than advised.
SmartScripts offers a fast, fully Irish-regulated online assessment with a registered prescriber from €20. Complete a short medical questionnaire and a doctor will review your suitability, no waiting rooms, no waiting lists.
In the large SURMOUNT clinical trial program, adults taking higher maintenance doses of tirzepatide alongside lifestyle changes lost, on average, 15 to 20% of their body weight over roughly 72 weeks, with greater weight loss at higher doses. Individual results vary, and the medicine works best combined with dietary changes and physical activity. Weight tends to return if treatment stops without sustained lifestyle change, which is why ongoing support matters.
Most side effects are gastrointestinal and tend to ease as your body adjusts. The most common include:
More serious but less common risks include pancreatitis and gallbladder problems. Tirzepatide is not suitable for people with certain personal or family histories (for example, a specific type of thyroid cancer). This is exactly why a proper assessment and follow-up are essential, and why buying without one is risky.
These three injections are often confused. In brief:
| Medicine | Active ingredient | How it works | Licensed for weight loss? |
|---|---|---|---|
| Mounjaro | Tirzepatide | Dual GIP + GLP-1 | Yes |
| Wegovy | Semaglutide | GLP-1 only | Yes |
| Ozempic | Semaglutide | GLP-1 only | No, licensed for type 2 diabetes |
For a full side-by-side comparison of effectiveness, cost and suitability, see our guide to weight-loss injections in Ireland or our dedicated Mounjaro Ireland treatment page.
Medical disclaimer: This article is for general information only and is not medical advice. Prescription-only medicines must be assessed and prescribed by a registered doctor or prescriber.
Yes. Mounjaro (tirzepatide) is licensed and available in Ireland, supplied through pharmacies and regulated online doctor services. It is a prescription-only medicine, which means you cannot buy it over the counter, a registered doctor or prescriber must assess your suitability and issue a prescription first. The important detail for most people is funding: Mounjaro is generally accessed on a private prescription for weight loss, because it is not currently reimbursed by the HSE.
As a guide for 2026, the medication ranges from roughly €150 per month at the 2.5 mg starting dose to around €250 to €300 or more at higher maintenance doses, because Mounjaro is priced per pen and the cost rises as you titrate upward. Pharmacies also set their own dispensing prices, so the same dose can cost more at one pharmacy than another. Eli Lilly increased the list price during 2025, so older figures you may have seen are out of date. In addition to the medication, you'll usually pay a small consultation fee (around €20 online).
Not currently for weight loss, most patients pay privately for Mounjaro when it's prescribed to help with weight management.
Yes, always. Mounjaro cannot legally be sold without a prescription from a registered prescriber following a medical assessment, which checks your BMI, medical history, and whether the medicine is safe for you. The upside is that getting assessed doesn't have to be slow: through a regulated online doctor service, you can often complete a short questionnaire, be reviewed the same day, and, if you're eligible, receive a prescription without waiting weeks for an in-person appointment. You'll then attend follow-up reviews as your dose is gradually increased.
Mounjaro has quickly become the most talked-about weight-loss treatment in Ireland. Here is exactly what it costs in 2026, how to get it legally and safely, and what the evidence says you can realistically expect.
Disclaimer: All prescriptions are issued by Irish-registered doctors, subject to clinical suitability. Medication names mentioned are trademarks of their respective owners.
Disclaimer: All medicine names and trademarks are the property of their respective owners. SmartScripts does not claim any affiliation with or endorsement by the trademark holders.
