Does a BMI of 25 qualify you for Mounjaro?

What does the Mounjaro licence actually require?

Tirzepatide, sold in the UK as Mounjaro, is licensed by the MHRA for weight management in adults alongside a reduced-calorie diet and increased physical activity. The SmPC sets two entry points. The first is a BMI of 30 or above on its own. The second is a BMI of 27 or above when the person has at least one weight-related health condition, conditions such as type 2 diabetes, high blood pressure, high cholesterol, obstructive sleep apnoea or prediabetes all count. A BMI of 25 sits below both of those entry points, so it does not satisfy the licensed criteria. The full Mounjaro overview goes into more detail on how the medicine works and who it is designed for. One thing worth knowing: these thresholds are not arbitrary targets invented by the prescriber, they reflect the populations studied in the clinical trials and the conditions under which the MHRA authorised the medicine for use in the UK.

Is there any situation where BMI 25 could change things?

There is a common belief that ethnic-background adjustments might bring the threshold down to 25. That is not quite accurate, and it is worth clearing up gently. For adults of South Asian, Chinese, Middle Eastern, Black African or African-Caribbean backgrounds, the relevant UK guidance applies thresholds that are 2.5 kg/m² lower than the standard figures, meaning the 27-with-a-condition threshold becomes 24.5, and the 30 threshold becomes 27.5. So a BMI of 25 combined with a qualifying health condition could, in this specific context, fall within the adjusted eligibility range under the lower threshold. A dedicated page on getting Mounjaro with a BMI of 25 covers this scenario in detail. Outside that ethnic-background adjustment, a BMI of 25 without a qualifying condition does not meet the criteria, and no legitimate prescriber should prescribe Mounjaro on that basis.

What are the realistic options at a BMI of 25?

If your BMI is currently 25, the licensed options for medication-assisted weight loss in the UK are limited. Mounjaro and Wegovy both require a higher BMI or a qualifying condition. That is not a reflection of how seriously your goals should be taken, it is a function of what the clinical evidence supports and what the regulator has authorised. The most useful immediate step is to get an accurate, up-to-date BMI measurement and consider whether any weight-related health conditions apply to your situation. The eligibility picture at BMI 26 and the position at BMI 27 each shift the calculation, particularly once a health condition is in play. The NHS BMI calculator is a practical starting point for checking your current figure accurately. For context on how pricing and access work if you do qualify in the future, the Mounjaro price comparison page sets out what the private market looks like.

What should you do next if your BMI is close to the threshold?

BMI is a snapshot, not a fixed identity. If you are at 25 now and your weight or health situation changes, the eligibility picture changes with it. A clinical consultation is not wasted at this stage, it is the place where a prescriber can confirm your actual BMI, identify any qualifying conditions you may not have formally considered, and advise on what options are open to you now versus in the near future. Our clinical team reviews every consultation personally, the same day, without passing your information through an algorithm. The weight-loss treatments overview sets out the full range of options available. If you have broader questions before starting, the FAQs page covers the most common ones. And if you want to explore further detail on how eligibility thresholds interact with BMI readings near the boundary, the BMI and Mounjaro eligibility guide is the clearest place to start. When you are ready, check your eligibility with our prescribers, there is no fee for the consultation itself.