Can I Take Mounjaro? What the UK Criteria Actually Say

Does my BMI mean I can take Mounjaro?

BMI is the starting point, not the whole story. The UK licence for Mounjaro covers adults with a BMI of 30 or above, and also adults with a BMI of at least 27 who have one or more weight-related conditions, think high blood pressure, dyslipidaemia, obstructive sleep apnoea, prediabetes or established type 2 diabetes. For people from South Asian, Chinese, Middle Eastern, Black African or African-Caribbean backgrounds, those thresholds sit 2.5 kg/m² lower under NICE guidance (TA1026), reflecting differences in health risk at a given BMI.

Worth knowing: the NHS BMI calculator is a useful starting check, and more detail on how BMI interacts with dose and progress is covered on our Mounjaro BMI eligibility page. Hitting the number is necessary but not sufficient, a prescriber also needs to be satisfied that nothing in your medical history or current medication list makes treatment unsuitable.

If you want the minimum BMI spelled out in detail, our minimum BMI for Mounjaro page goes through the thresholds with worked examples.

What health conditions or medicines might mean Mounjaro isn't right for me?

Some conditions mean a prescriber will decline to prescribe, at least without specialist input. A personal or close family history of medullary thyroid carcinoma or Multiple Endocrine Neoplasia type 2 is a contraindication listed in the SmPC. A history of pancreatitis requires careful discussion; the MHRA highlighted pancreatitis as a known risk for GLP-1 medicines in a January 2026 Drug Safety Update, and prescribers take it seriously. Severe gastrointestinal disease, certain kidney conditions and allergy to tirzepatide or any excipient are other grounds for caution or exclusion.

Medication interactions matter too. Mounjaro slows gastric emptying, which affects how other medicines are absorbed. Women taking oral contraceptives need to know that absorption of the pill may be reduced during the first four weeks of treatment and for four weeks after each dose increase, a non-oral method such as condoms should be added during those windows. NHS guidance recommends considering transdermal HRT (patches or gels) rather than oral HRT for the same reason. If you have chronic kidney disease and are wondering specifically about Mounjaro, our CKD and Mounjaro page covers what the evidence and prescribing guidance says.

None of this is a reason to assume the worst. Many people with complex health pictures still qualify; it depends on the specifics.

Are there groups for whom Mounjaro is not recommended at all?

Yes, and the list is short. Pregnancy is one: Mounjaro is not recommended during pregnancy, and anyone who becomes pregnant while taking it should contact their prescriber promptly. It is also not recommended while breastfeeding or when actively trying to conceive. The licensed indication does not cover under-18s. For those planning a pregnancy, the contraception guidance above applies during treatment and for a wash-out period afterwards, your prescriber will advise on timing.

People who have already been taking Mounjaro elsewhere and want to transfer their prescription are welcome to consult with us, though transfer patients are asked to provide evidence of their current treatment and dose before any prescription is continued or increased. More on how we approach that is on our who can take Mounjaro page.

How does the private route through nume work if I think I'm eligible?

Mounjaro is available through the NHS, but criteria are strict and phased by cohort; many people who meet the licensed eligibility threshold do not yet meet the NHS rollout criteria, or face a significant wait. Private treatment through a regulated pharmacy is the alternative. At nume, the process is straightforward: a free online consultation, reviewed the same day by a real prescriber (a GPhC-registered Independent Prescriber, not software), identity and weight confirmed on video, and (if approved) treatment dispatched that day for free next-working-day DPD delivery.

If you want to understand what taking Mounjaro involves day to day (the pen, the routine, storage in the fridge next to everyday items, how the dose schedule works) our main Mounjaro treatment page covers all of that. Pricing context, including what a single transparent private price typically includes, is explained on our Mounjaro cost page. Our clinical team oversees every prescription issued. One thing to note: dose increases require clinical review, and early changes are not something we support without a prescriber's sign-off, our page on taking Mounjaro ahead of schedule explains the thinking behind that policy.

If you're broadly eligible and want to take the next step, check your eligibility through a free consultation and a prescriber will give you a clear answer based on your specific situation.