Can You Get Mounjaro If Your BMI Is Under 30?

The licensed threshold: where 27 fits and why

Mounjaro's UK marketing authorisation sets two routes in. Adults with a BMI of 30 or higher can be considered regardless of other conditions. Adults with a BMI between 27 and 29.9 can be considered if they have at least one weight-related comorbidity. The conditions that count include type 2 diabetes, prediabetes, hypertension, dyslipidaemia (raised cholesterol or triglycerides), obstructive sleep apnoea, and osteoarthritis, among others. This is the standard the prescriber applies, not a rigid cut-off that rejects anyone at 29.8.

A question our prescribers hear most weeks is whether having one of these conditions is enough on its own to qualify at a lower BMI. The honest answer is that meeting the licensed criteria is necessary but not sufficient: the prescriber still has to judge whether treatment is appropriate given your full health history, any contraindications, and your goals. The SmPC, published on the Electronic Medicines Compendium, sets out the full list of contraindications and special warnings that inform that review.

It is also worth knowing that for people from South Asian, Chinese, Middle Eastern, Black African or African-Caribbean backgrounds, UK clinical guidance commonly applies thresholds around 2.5 kg/m² lower, so a BMI of 27.5 rather than 30 as the general starting point. The BMI thresholds for Mounjaro page covers those adjustments in more detail.

NHS criteria versus private licensed criteria, they are not the same thing

Many people searching this question have already looked at NHS eligibility and been told they do not qualify. That is understandable confusion, because NICE's recommended threshold for NHS tirzepatide (TA1026, published December 2024) sits well above the licensed minimum: a BMI of 35 or above plus at least one weight-related comorbidity, with the phased rollout currently prioritising people with four or more qualifying conditions. The NHS route is also restricted to specific care settings.

Private prescribing operates against the licensed criteria, not the NICE commissioning threshold. That gap matters. Someone with a BMI of 28 and well-controlled hypertension would not meet the current NHS criteria, but could be a reasonable candidate for private tirzepatide, subject to prescriber assessment. If you want to understand exactly what BMI you need for Mounjaro under each pathway, that page maps both routes side by side.

The private route also has no waiting list. A regulated online pharmacy like nume, with its own GPhC-registered pharmacy (registration 9012878, verifiable at the GPhC register), can complete a clinical consultation and dispatch treatment the same day if a prescriber approves it, without a GP referral. That is what makes the private route attractive for people who meet the licensed criteria but fall short of NHS thresholds.

What a prescriber actually looks at when your BMI is between 27 and 29.9

If you are trying to work out whether you could take Mounjaro with a sub-30 BMI, the decision really has three parts. First, do you have at least one qualifying weight-related condition that has been diagnosed? A prescriber will want to see evidence of this, not a self-report. Second, are there any contraindications (for instance, a personal or family history of medullary thyroid carcinoma, MEN2, or a history of pancreatitis) that would make the medicine unsuitable regardless of BMI? Third, is the clinical risk-benefit balance favourable given your overall health?

That last point is where the assessment becomes genuinely clinical rather than administrative. Our page on using Mounjaro with a BMI under 30 explores how that risk-benefit review tends to play out in practice, including what comorbidity evidence a prescriber typically looks for. A BMI of 28 with poorly controlled type 2 diabetes and hypertension presents a different picture from a BMI of 28 with well-managed, stable hypertension and no other complications. Both might technically meet the licensed criteria; neither is an automatic approval. You can read more about getting Mounjaro with a BMI of 27 if that is your specific situation, or explore the broader Mounjaro treatment information to understand how the prescribing process works from start to finish.

One practical note: if you are considering treatment and your BMI sits just below 30, it is worth having your relevant health records to hand before your consultation. Documented diagnoses make the assessment faster and the clinical picture clearer for the prescriber reviewing your case, and our guide to the BMI needed to get Mounjaro sets out exactly which numbers apply to which route. The weight-loss treatment overview explains what to expect at each stage.