Can Your Doctor Prescribe Mounjaro for Weight Loss? (October 2026)

01 · Your options

Will my doctor prescribe Mounjaro on the NHS?

Your GP can prescribe it only if you fit current NHS criteria, because access is being phased in over several years. NICE recommends Mounjaro for adults with a BMI of at least 35 plus at least one weight-related condition. The primary-care rollout began in June 2025 with the highest-need groups first, initially BMI 40+ with four or more qualifying conditions.⁴⁶

If you do not yet fit your area's stage, your GP is not refusing you personally. Full rollout is expected to take years. See our guide on how to raise it with your doctor.

The licensed criteria are wider than the NHS rollout stage, which is why many people who qualify choose regulated private treatment rather than waiting.¹

02 · Private prescribing

Getting a prescription privately

You can start with a free online consultation, reviewed by a GPhC-registered prescriber, not a scoring script. Payment is taken when you place the order; if the prescriber decides the treatment is not suitable, the order is refunded automatically in full.

If approved, your order is dispensed by our registered pharmacy using official LillyDirect supply, with same-day dispatch when ordered by 3pm and free next-day tracked delivery. All six doses are in stock. Your first 2.5mg pen costs £129.99 with code FIRST40, and every later order is £25 off the standard price (code DOSE25). Ongoing monthly reviews are included. You can see all options at Buy Mounjaro.

03 · Who is eligible

Licensed eligibility for weight loss

Mounjaro is licensed for weight management in adults with a BMI of 30 or above, or a BMI between 27 and 30 with at least one weight-related condition. Examples include high blood pressure, high cholesterol, obstructive sleep apnoea, cardiovascular disease, prediabetes or type 2 diabetes.¹

It must be used alongside a reduced-calorie diet and increased physical activity. A prescriber will assess your BMI, medical history and current medicines before deciding whether it is suitable. Read more on whether your doctor can prescribe Mounjaro, or which kind of doctor can.

04 · What to expect

What results look like

In the SURMOUNT-1 trial of 2,539 adults, people taking tirzepatide alongside diet and exercise lost on average 15% of body weight on 5mg, 19.5% on 10mg and 20.9% on 15mg over 72 weeks, compared with 3.1% with lifestyle changes alone. These are trial averages, and individual results vary.²

For someone starting at 100 kg, 20.9% is about 21 kg. Treatment works alongside a reduced-calorie diet and increased physical activity, not instead of them.

05 · How it works

How Mounjaro works

Tirzepatide activates two natural gut-hormone receptors at once: GIP and GLP-1. Together these help regulate appetite, slow how quickly the stomach empties and improve the body's response to insulin. Most people feel fuller sooner and less hungry between meals.¹

It is a once-weekly pre-filled KwikPen in six strengths from 2.5mg to 15mg.

06 · Safe supply

Buying safely

Only obtain Mounjaro from a GPhC-registered pharmacy after a prescriber's review. Be wary of any seller offering to supply without a consultation or prescription, as counterfeit alerts have been issued by the MHRA.⁷ Our pens are genuine KwikPens, as explained in our authentic Mounjaro guide. Registration: GPhC 9012878.