How to Get Mounjaro for Weight Loss: The UK Process, Step by Step

Step 1, confirm you meet the licensed criteria before anything else

Mounjaro is licensed in the UK for weight management in adults with a BMI of 30 or above, or a BMI of 27 or above alongside at least one condition linked to excess weight: think hypertension, dyslipidaemia, type 2 diabetes or obstructive sleep apnoea. Lower BMI thresholds can apply for certain ethnic backgrounds under UK clinical guidance. A BMI figure alone does not guarantee a prescription, the prescriber weighs the whole clinical picture, including any contraindications.

Not sure where your BMI sits? The NHS BMI calculator gives you a quick baseline, though the formal assessment is the prescriber's call, not a number on a screen.

If you have a history of medullary thyroid carcinoma, pancreatitis or certain gastrointestinal conditions, tirzepatide may not be appropriate and your prescriber will discuss the detail with you. Age also matters: Mounjaro is not licensed for anyone under 18, and it is not recommended during pregnancy, while breastfeeding, or when trying to conceive.

Step 2, choose your prescription route: NHS or private

There are two legitimate paths to a Mounjaro prescription in the UK, and they work very differently in practice.

On the NHS, access follows NICE's appraisal of tirzepatide (TA1026), which sets stricter criteria than the licensed indication (currently BMI 40 or above with four or more qualifying conditions) and is being phased in gradually, with GP-led prescribing becoming available from April 2026 in participating practices. Waiting times vary considerably by area, and not every practice has opted in yet.

Private prescribing follows the licensed SmPC eligibility directly (BMI 30-plus, or 27-plus with a weight-related condition). Through a regulated online pharmacy, there is no referral and no waiting list, subject to the prescriber's clinical assessment. You can read more about where to get Mounjaro for weight loss and what separates the legitimate private services from the rest.

Whichever route you choose, the medicine must come from the licensed UK supply chain. Counterfeit pens have caused hospitalisations; the MHRA has issued multiple public warnings about fake weight-loss injections sold without a prescription via social media and unregistered websites. A pharmacy you can verify on the GPhC register is the minimum baseline for safety.

Step 3, complete the clinical consultation and verification

At nume, the process begins with a free online consultation. A prescriber (not software) reads through your answers the same day. Identity is verified with photo ID, and weight is confirmed on a live video call. Both steps matter: they are how a responsible service makes sure the right person is getting the right treatment at the right dose.

If approved as clinically suitable, your prescription is written and your order is dispatched the same day if received before 12 pm, Monday to Friday. The pen arrives via tracked DPD delivery the next working day, in plain unbranded packaging. It goes straight into the fridge door when it lands (storage is 2–8°C) and your prescriber's instructions travel with it.

Our Mounjaro overview covers what to expect from the pen itself, and the tirzepatide dosing protocol explains how the titration schedule works in practice, though specific decisions about your dose are always made by your prescriber, not a general guide.

Step 4, understand what happens after your first pen

Getting the prescription is only the beginning. Mounjaro treatment involves a graduated dose schedule, typically stepping up every four weeks as the prescriber reviews your progress and tolerance. The opening dose is set at 2.5 mg because the body needs time to adjust, it is an accommodation stage, not the dose doing the clinical lifting. If you are curious about the mechanisms behind that process, our page on how Mounjaro works for weight loss walks through the science in plain terms.

At nume, every repeat order is reviewed again before it is approved and dispensed. That means your prescriber checks in with you each time, not just at the start. There is no auto-renewing subscription. If you are considering what results look like over time, the evidence on Mounjaro's weight-loss outcomes is worth reading alongside the SURMOUNT-1 trial data that underpins the UK licence.

It is also worth knowing that some people ask whether Mounjaro works differently by sex. The short answer is that outcomes are broadly similar, though body composition and starting weight affect results; the Mounjaro for men page explores the specific considerations. Questions about cost context (what a private prescription typically involves and what it covers) sit on a separate page in our weight-loss treatment overview, if that is the next thing you want to understand.

If you are ready to find out whether you are eligible, speaking to our prescribers costs nothing and takes a few minutes.