Yes, a GP can prescribe Mounjaro (tirzepatide) for weight loss in the UK, but only within the limited NHS rollout and under strict eligibility criteria — most people will not qualify through their GP yet, and many choose a regulated private prescriber instead. Mounjaro is a Prescription-Only Medicine and is only supplied after a clinical consultation with a GPhC-registered prescriber who confirms it is appropriate for you.
Can a GP prescribe Mounjaro for weight loss on the NHS?
A GP can prescribe Mounjaro (tirzepatide) for weight loss on the NHS in England, but access is being phased in gradually and is tightly restricted. NICE recommended tirzepatide for weight management, and NHS England set a multi-year rollout that first prioritises people with the highest clinical need — meaning the majority of people who want it will not meet the current NHS threshold through their GP.
Because the NHS rollout is phased, whether your own GP can prescribe it right now depends on local arrangements and where you fall in the priority groups. If you do not qualify on the NHS, a regulated private route is the other legitimate option in the UK.
Who qualifies for Mounjaro from a GP on the NHS?
The NHS rollout for Mounjaro prioritises the highest-need groups first, so the clinical bar through a GP is higher than the general eligibility for private weight-loss treatment. Exact criteria are set by NICE and NHS England and tighten access during the phased rollout.
By contrast, the general eligibility used for privately prescribed weight-loss medicines (including Mounjaro) is:
- Aged 18 or over.
- A BMI of 30 or more (obesity), or a BMI of 27 to 30 with a weight-related condition such as type 2 diabetes, high blood pressure or sleep apnoea.
- No contraindications — for example you are not pregnant, planning pregnancy or breastfeeding, and have no history of pancreatitis, medullary thyroid cancer or MEN2.
Even if you meet these criteria, a prescription is only issued if a registered prescriber judges it clinically appropriate and safe for you. Treatment is never guaranteed.
Why might my GP say no to Mounjaro?
Your GP may decline to prescribe Mounjaro because the NHS phased rollout prioritises people with the highest clinical need first, and most patients fall outside the current priority group. A GP may also decline if a weight-management service pathway is required locally, if your BMI does not meet the NHS threshold, or if a medical reason makes the medicine unsuitable for you.
A "no" on the NHS does not mean Mounjaro is unsafe or unavailable to you — it usually means you do not meet the restricted NHS criteria at this stage. A regulated private prescriber can assess you against the standard eligibility criteria instead.
How can I get Mounjaro privately in the UK?
You can get Mounjaro privately in the UK through a GPhC-registered online pharmacy, where a registered independent prescriber reviews your health information and prescribes only if it is clinically appropriate. This is a legitimate, regulated route that runs alongside — not instead of — the NHS.
At The Weight Clinic the process is:
- You complete a free online consultation about your health and weight at our eligibility check.
- A GPhC-registered independent prescriber reviews your answers to confirm whether treatment is clinically appropriate and safe.
- A short video consultation takes place where clinically needed.
- If suitable, the medicine is dispensed by our own UK pharmacy and sent by tracked delivery, with ongoing prescriber support.
You can read more about Mounjaro and browse all treatments before deciding whether to start.
How do I know a private Mounjaro service is legitimate?
A legitimate UK private Mounjaro service dispenses from a GPhC-registered pharmacy, uses registered prescribers, and supplies only genuine MHRA-licensed medicines. You can verify any pharmacy on the General Pharmaceutical Council's online register at pharmacyregulation.org.
The Weight Clinic dispenses through North Harrow Pharmacy, GPhC registration number 1034996, with Andrew Lane (GPhC 2027876) as Superintendent Pharmacist. We are registered with the Information Commissioner's Office (ICO) and compliant with the NHS Data Security and Protection Toolkit. Avoid any seller offering prescription medicines without a consultation, or supplying unlicensed "grey-market" products.
How much does Mounjaro cost privately?
Privately, Mounjaro is priced by dose, and the online consultation itself is free — you only pay if treatment is prescribed and you choose to proceed. The dose increases gradually (titration) to reduce side effects, starting at 2.5mg and rising to a maximum licensed dose of 15mg.
| Dose (weekly injection) | Price per month |
|---|---|
| 2.5mg (starter) | £160 |
| 5mg | £185 |
| 7.5mg | £240 |
| 10mg | £260 |
| 12.5mg | £275 |
| 15mg (maximum) | £295 |
In the SURMOUNT-1 trial, participants on the 15mg dose lost on average 22.5% of body weight over 72 weeks, alongside lifestyle support (Jastreboff AM, et al. N Engl J Med. 2022;387(3):205–216). Individual results vary; not everyone reaches this.
How does Mounjaro work and what are the side effects?
Mounjaro (tirzepatide) works by activating two gut-hormone receptors at once — GLP-1 and GIP — which reduce appetite and help you feel fuller, supporting weight loss alongside healthier eating and activity. It is a once-weekly self-injection.
The most common side effects (affecting more than 1 in 10 people) are nausea, diarrhoea, constipation, vomiting, decreased appetite and fatigue. Serious but rare risks include severe allergic reaction, acute pancreatitis, severe hypoglycaemia, severe gastrointestinal disease and worsening diabetic retinopathy. Report any suspected side effects through the MHRA Yellow Card scheme at https://yellowcard.mhra.gov.uk/.
Are there alternatives to Mounjaro?
Yes — there are several MHRA-licensed weight-loss medicines, and which suits you is a clinical decision made at consultation, not a choice to make alone. Alternatives include the Wegovy injection (semaglutide), the Wegovy Tablet (once-daily oral semaglutide), and Foundayo (orforglipron, a once-daily tablet taken at any time of day, with or without food or water).
Each works slightly differently and has its own dosing and price. A registered prescriber can help identify which, if any, is clinically appropriate for you after reviewing your free consultation. You can also compare weight-loss injections on our combined page.
This article is for information only and is not a substitute for personalised medical advice. Weight-loss medicines are prescription-only, are not suitable for everyone, and are prescribed only after a clinical consultation with a GPhC-registered prescriber. Individual results vary. Always speak to a UK-registered pharmacist or doctor before starting or changing any prescription medication.
