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Overview
Mounjaro (tirzepatide) has become the most searched-for weight-management medicine in Ireland, and the questions arriving in our consultations are strikingly consistent: Is it actually available here? Do I qualify? Will my own GP prescribe it? How do I know a supply route is legitimate? And what does the whole process cost?
This guide answers each in depth. The summary version: yes, Mounjaro is authorised and available to patients in Ireland; access runs through a doctor's prescription following individual assessment; eligibility follows defined BMI criteria; and the safest route is the fully regulated on, an Irish-registered prescriber and a licensed dispensing pharmacy. Everything else is detail, and the detail matters, because Mounjaro's popularity has also made it one of the most counterfeited medicines in Europe.
This article is for general education and is not medical advice. Prescribing decisions rest entirely with the assessing doctor.
What Mounjaro is, and why demand is so high
Mounjaro is a once-weekly injection containing tirzepatide, made by Eli Lilly. It belongs to the newest generation of weight-management medicines: where semaglutide (Wegovy) activates one gut-hormone receptor (GLP-1), tirzepatide activates two, GLP-1 and GIP. The dual action reduces appetite, slows stomach emptying and improves how the body handles glucose; the practical result for most patients is dramatically quieter hunger and meaningfully easier portion control. We explain the mechanism fully in our tirzepatide science guide.
The demand is evidence-driven. In the SURMOUNT-1 trial, published in the New England Journal of Medicine, adults with obesity taking the highest dose lost an average of around 20.9% of body weight over 72 weeks, the strongest result ever recorded for a weight-management medicine at the time. Month-by-month expectations are covered in our results timeline.
Is Mounjaro authorised and available in Ireland?
Yes, on both counts. Tirzepatide holds a full EU marketing authorisation via the European Medicines Agency, which applies automatically in Ireland. It is a prescription-only medicine: legal supply requires a prescription from a registered doctor, dispensed by a licensed pharmacy sourcing through authorised wholesalers.
Availability, actually getting stock into a patient's hands, has been the bumpier road. Since launch, surging demand has produced intermittent supply pressure across Europe, with some doses harder to find in some months. In practice this is now largely managed: our Northern Ireland pharmacy partners hold stock across the dose range, and prescriptions are dispensed against confirmed availability. All six doses, 2.5 mg through 15 mg (see our dose guide), are stocked at the time of writing.
A note on what "available in Ireland" does not mean. It does not mean available without prescription, from an online shop, a beautician, a gym contact or social media. Ireland's medicines regulator, the HPRA, has repeatedly warned about falsified weight-loss pens sold outside the legal supply chain, some containing no tirzepatide at all, and some containing insulin. If a route doesn't involve a doctor's assessment and a licensed pharmacy, it isn't a shortcut; it's the counterfeit market.
Who is eligible
Eligibility follows the licensed indication and international obesity guidance:
- Adults with a BMI of 30 kg/m² or above, or
- Adults with a BMI of 27 kg/m² or above plus at least one weight-related condition, high blood pressure, raised cholesterol, obstructive sleep apnoea and cardiovascular disease are typical examples.
Check your starting point with our BMI calculator though BMI is a screening tool, not the whole assessment, a point the HSE's obesity information makes well. The reviewing doctor weighs your full history: current medicines, gastrointestinal history, pancreatitis risk, thyroid history, mental health context, pregnancy plans.
Mounjaro is not suitable for everyone. It is not used during pregnancy or breastfeeding; caution or exclusion applies with a history of pancreatitis, severe gastrointestinal disease and certain thyroid conditions; and we do not prescribe weight-management medicines to people with diabetes, although tirzepatide is also a diabetes medicine under the same brand name elsewhere, diabetes care belongs with your own GP or diabetes team, and that is a firm policy of our service.
Will my own GP prescribe it?
Some Irish GPs do prescribe tirzepatide for weight management; many currently don't, reasons range from unfamiliarity with a new medicine class to practice policies on weight-management prescribing and monitoring capacity. If your GP offers it, that's a perfectly good route.
Where they don't, doctor-led online services fill the gap, legitimately, provided the same clinical standards apply. Whatever service you use (including ours), the checklist is the same: a real medical assessment reviewed by an identifiable, Irish-registered doctor; prescriptions dispensed by a licensed pharmacy; no "guaranteed approval"; and clear ongoing follow-up. Your GP can and should remain in the loop, we encourage patients to inform their GP of any prescription for continuity of care.
How access works at WeightLossInjections.ie
Our model is deliberately simple and entirely form-based, no video call, no phone appointment, no clinic visit:
- Complete the online medical questionnaire (about three minutes). The consultation fee is a flat €30, the same for first and repeat consultations, refunded in full if you're not suitable.
- An Irish-registered doctor reviews your assessment and determines whether Mounjaro (or an alternative — see our Mounjaro vs Wegovy comparison) is clinically appropriate.
- Once a prescription is issued, it is transmitted securely to your chosen pharmacy partner in Northern Ireland, which dispenses from the authorised supply chain.
- Collect in person or arrange delivery, dispensing and delivery arrangements are made directly between you and the pharmacy, and medication costs are charged separately by the pharmacy (see our cost guide).
Ongoing treatment follows the same pattern: follow-up consultations ( €30) review progress, side effects and dose before each further prescription, the titration schedule steps up roughly every four weeks through the six doses, and that clinical oversight is not optional bureaucracy but how the trial-level results are actually achieved.
Red flags: how to spot an illegitimate route
Given the counterfeit problem, it's worth being explicit. Walk away from any source that: sells "Mounjaro" without a prescription or medical questionnaire; ships from unverifiable overseas websites; offers prices dramatically below every legitimate pharmacy; sells via social media DMs, marketplaces or word-of-mouth; or supplies pre-filled syringes and vials rather than the manufacturer's labelled pen. The HPRA's warnings on falsified medicines are unambiguous: outside the legal chain there is no assurance of what's in the pen, how it was stored, or whether it's medicine at all. The price of the legitimate route is a doctor's assessment; the price of the illegitimate one can be your health.
Frequently asked questions
Do I need to see a doctor in person, or have a video call?
No. The entire assessment is form-based, no video appointment, no phone call, no clinic visit. The questionnaire is designed to capture the same information a prescriber would take in a face-to-face consultation: BMI, medical history, current medicines, contraindication screening. If the reviewing doctor needs clarification on any answer, they'll follow up before making a decision. Some patients prefer this format precisely because it removes the waiting room from a sensitive conversation.
Do you prescribe Mounjaro for type 2 diabetes?
No, and this is a firm service policy rather than a case-by-case call. Although tirzepatide is also licensed for type 2 diabetes, diabetes care involves monitoring, medication interactions and hypoglycaemia risks that belong with your own GP or diabetes team, not a weight-management service. If you have diabetes and are interested in this class of medicine, the right person to ask is the clinician who manages your diabetes.
What if I'm not suitable?
Your €30 consultation fee is refunded in full, you pay nothing for an assessment that ends in a "no". The doctor's review will indicate the reason: sometimes it's an absolute contraindication (pregnancy, pancreatitis history, certain thyroid conditions), sometimes a BMI below the licensed criteria, sometimes a medical factor that needs your own GP's input first. A refusal isn't necessarily permanent, if your circumstances change, you can reapply, and where an alternative treatment might suit, the review will often point you toward the conversation worth having.
Can I switch to Mounjaro from Wegovy, or vice versa?
Under clinical guidance, switching within the GLP-1 class is a recognised clinical option, most commonly when side effects persist on one product or results have genuinely stalled at a full maintenance dose. It is never a self-directed swap: the two medicines have different dose ladders, and your prescriber maps an appropriate crossover point and timing gap. Raise it at a repeat consultation (€30) and read our comparison guide first so you know what the switch does and doesn't change.
Is there an age requirement?
Our service assesses adults aged 18 and over only. At the other end of life there's no automatic upper cut-off, but the assessment weighs overall health, frailty and other medicines more carefully with age, suitability is individual, which is what the doctor's review is for.
References and further reading
- European Medicines Agency — Mounjaro product information
- New England Journal of Medicine — SURMOUNT-1: Tirzepatide once weekly for the treatment of obesity
- HPRA — Health Products Regulatory Authority, Ireland
- HSE — Obesity: diagnosis and treatment
- WHO — Obesity and overweight fact sheet
This article is for general educational purposes only and does not constitute medical advice. Prescription-only medicines used in weight management are prescribed solely where an Irish-registered doctor determines it is clinically appropriate following an individual assessment. A prescription is not guaranteed. Always read the patient information leaflet and follow your prescriber's guidance.
