Will My GP Give Me Weight Loss Injections?

You've asked your GP about injections and left without a prescription — here's why that happens

It's one of the most common frustrations people describe right now. You've heard about Mounjaro or Wegovy, you've done the research, you go to your GP feeling ready, and you leave with nothing. That experience makes more sense once you understand how NHS access to these medicines is structured.

Tirzepatide (Mounjaro) only became prescribable in GP surgeries in April 2026, under a new GP contract provision. Participation by individual practices is voluntary. So even if you live near a surgery that is enrolled, the prescriber still has to confirm you meet the current NHS criteria before issuing anything. As things stand, the first cohort requires a BMI of at least 40 alongside four or more of a defined list of five conditions: high blood pressure, dyslipidaemia, obstructive sleep apnoea, cardiovascular disease, and type 2 diabetes. That's a deliberately narrow opening. A second cohort covering BMI 35–39.9 with four or more of those conditions activated in June 2026, with further widening expected around March 2027.

If your surgery isn't participating, or you don't yet meet the criteria, your GP isn't withholding treatment, they're working within rules they don't set. Whether your GP can prescribe weight loss injections depends heavily on which phase of rollout applies to you. Worth knowing before you book the appointment. If you're wondering more broadly whether your doctor will actually give you weight loss injections, the answer turns on criteria and practice-level participation as much as anything else. And if you want a clearer picture of what a GP can and cannot prescribe when it comes to weight loss injections, that's worth reading before you go in.

What your GP needs to see before prescribing, and what might get in the way

A GP who is prescribing under the new NHS framework will want to confirm your BMI (measured, not self-reported), review which weight-related conditions you have documented, and check that participating in structured wrap-around support is something you're willing to commit to. NHS guidance requires that every patient prescribed a weight management medicine also engages with dietary and activity support, it isn't optional on the NHS side.

There are also clinical contraindications a prescriber will check: a history of pancreatitis, certain thyroid conditions, pregnancy or plans to conceive, and current use of medicines that may interact. These aren't NHS-specific; they apply to any legitimate prescription. You can read more about the full landscape of weight loss injections available in the UK to understand what's actually on the table.

If you use oral contraceptives, it's worth raising this with whoever prescribes tirzepatide for you. NHS England advises adding a non-oral contraceptive method for the first four weeks of treatment and for four weeks after each dose increase, because tirzepatide can slow absorption of oral medicines. That's the kind of clinical detail a prescriber covers at consultation, not something to navigate alone.

For semaglutide (Wegovy), the NHS route is different again: NICE recommends it only within specialist weight management services, not general practice. If your GP refers you that route, expect a wait. That's not a failing of your GP; it reflects how the TA875 guidance was written. Details on how weight loss injections are classified and licensed can help frame those conversations.

Private prescribing: what it means and why it's a different path, not a shortcut

A private prescription for Mounjaro or Wegovy is a real, legal NHS prescription issued by a registered independent prescriber working outside the NHS funding framework. The medicine is genuine, sourced through the licensed UK supply chain, dispensed by a GPhC-registered pharmacy. What differs is the funding route and the speed.

There is no referral needed and no waiting list. Your consultation is assessed (by a qualified prescriber, reading your answers, not software sorting a queue) on the same day you submit it. If you order before noon on a weekday, treatment dispatched that day arrives with you the next working day via DPD, tracked, in plain packaging. One price covers the consultation, prescription, treatment, and delivery; there are no add-on charges and no subscription that quietly renews. Our clinical team at nume reviews every consultation personally before anything is approved.

That said, private prescribing isn't a route around clinical assessment, it's a different route to the same gate. Eligibility under the licensed criteria still applies: adults with a BMI of 30 or above, or 27 or above with at least one weight-related condition. Lower thresholds can apply for some ethnic backgrounds under UK guidance. A prescriber still reviews your full health picture before any approval. Questions about the process are answered on our FAQs page.

On cost: private treatment for weight loss injections is not cheap. The reality of pricing is that legitimate treatment includes clinical oversight, a genuine supply chain, and aftercare support, not just a pen in a box. Anyone offering these medicines at prices dramatically below market, or without a clinical assessment, is a red flag, not a bargain. The MHRA has warned about counterfeit weight loss pens found in the UK market, and the consequences of using them have been serious.

What to do next, whether you're waiting on the NHS or exploring private options

If you want to pursue the NHS route, it's worth calling your surgery to ask whether they're participating in the GP contract for weight management medicines, and booking a specific appointment to discuss your eligibility rather than raising it at the end of another appointment. Have your most recent weight measurement to hand. If your BMI is close to a threshold, ask for it to be formally recorded.

If you don't meet NHS criteria yet, or your surgery isn't enrolled, a regulated private pharmacy is a legal and clinically sound alternative for people who are eligible on the licensed criteria. The weight loss treatments page walks through what a consultation at nume involves and what to expect at each stage. There's no obligation to proceed, a consultation is the starting point, not a commitment.

One practical note: if you do start injections privately and later become eligible on the NHS, you can transfer. It's something our prescribers help with. More detail on the wider treatment landscape is on our weight loss overview page. And if you have specific questions before starting, our team is available seven days a week.