What Are the NHS Requirements for Mounjaro?

Which conditions must you have to qualify for Mounjaro on the NHS right now?

The NHS requirements for Mounjaro are set by NICE's appraisal of tirzepatide (NICE TA1026, recommendations chapter) and translated into commissioning guidance by NHS England. From June 2025, the first cohort opened to adults with a BMI of 40 or above who also have four or more of the following five conditions: high blood pressure, dyslipidaemia (raised cholesterol or triglycerides), obstructive sleep apnoea, cardiovascular disease, and type 2 diabetes. You need four of the five, not one or two.

From 23 June 2026 a second cohort became eligible: adults with a BMI of 35 to 39.9 who also have four or more of those same five conditions. The BMI figure is the starting point, but the number of comorbidities is what opens the door. For people of South Asian, Chinese, Middle Eastern, Black African or African-Caribbean backgrounds, UK guidance reduces each BMI threshold by 2.5 kg/m², so the Cohort 1 figure effectively becomes 37.5 rather than 40 for those groups.

A further phase is expected around March 2027, which would extend access to adults with a BMI of 40 or above who have three, rather than four, qualifying conditions. None of these phases are guaranteed to open on the stated dates; NHS England can adjust the timetable. If you want to check where you currently sit, the BMI requirements for NHS Mounjaro page covers the numbers in detail.

Can a GP prescribe Mounjaro on the NHS, or does it have to go through a specialist?

A question our prescribers hear most weeks: do you need a hospital referral to get Mounjaro on the NHS? The answer depends on your practice. From 1 April 2026, GP practices may prescribe Mounjaro directly under the revised GP contract (QOF 2026/27), which brought tirzepatide into primary care for the first time. Before that date, NHS access ran solely through specialist weight management services.

The catch is that GP participation is optional. Not every practice has signed up, and availability varies considerably between areas. If your GP is not yet prescribing it, the route remains a referral to a specialist service, where waiting lists are commonly long. NHS England requires that every patient receiving Mounjaro through any NHS route takes part in wraparound lifestyle support, covering diet, physical activity, and behavioural changes. The medicine alone is not the offer; the programme around it is mandatory.

Scotland, Wales, and Northern Ireland operate devolved systems with different thresholds and processes. If you're outside England, check with your local health board rather than assuming NHS England rules apply directly. Details of what getting Mounjaro through a GP on the NHS actually involves are worth reading before you book an appointment.

What happens if you don't meet the NHS Mounjaro requirements?

The NHS criteria cover a specific slice of the population; many people who would benefit clinically from tirzepatide do not currently qualify. The licensed eligibility for private prescription is broader: adults with a BMI of 30 or above, or 27 or above with at least one weight-related condition such as prediabetes, hypertension, or high cholesterol. A prescriber assesses the full clinical picture, not just a single number.

For people outside the NHS criteria today, a private route through a regulated online pharmacy is the practical alternative. NICE's TA1026 guidance sets the threshold for NHS funding; the medicine's own UK licence sets a separate, wider threshold for private prescribing. The two are not the same thing, and it is worth understanding the difference before concluding you are ineligible altogether.

If you are considering a private prescription, buying Mounjaro online requires a pharmacy you can verify on the GPhC pharmacy register. Sellers offering tirzepatide without a clinical assessment are operating outside the law; the MHRA has seized large volumes of counterfeit weight-loss pens and warns that unverified online sellers are a genuine safety risk. The risks of Mounjaro and how the NHS manages them covers what a legitimate prescribing process looks like.

num also prescribes for conditions sometimes associated with weight, such as PCOS; Mounjaro for PCOS and NHS eligibility covers that specific situation. For a broader look at how tirzepatide works and who it suits, the Mounjaro treatment guide is a good starting point, and the free consultation is where a prescriber can assess your situation directly.