Can your GP prescribe weight loss injections on the NHS?

You ask your GP, here is what the conversation often looks like

Picture this: you have done your research, you know tirzepatide exists, and you book an appointment. Your GP may be supportive and want to help. But the conversation quickly turns to eligibility, and that is where many people find the door partly closed.

Under the current NHS rollout for weight loss injections, tirzepatide prescribing in primary care only opened in April 2026, and even then, GP practices chose whether to participate. If yours has not signed up to the relevant contract, your GP simply cannot prescribe it through the NHS right now, regardless of how suitable you are clinically.

Where a practice has opted in, the current NHS criteria for tirzepatide (Cohort 1, from June 2025) require a BMI of 40 or above and four or more of five qualifying conditions: high blood pressure, dyslipidaemia, obstructive sleep apnoea, cardiovascular disease, or type 2 diabetes. Cohort 2, which opened in June 2026, extended access to people with a BMI of 35 to 39.9 with four or more of those conditions. Further cohorts are planned for 2027. Ethnic-background adjustments apply throughout: BMI thresholds are 2.5 kg/m² lower for South Asian, Chinese, other Asian, Middle Eastern, Black African or African-Caribbean backgrounds under NICE's appraisal of tirzepatide (TA1026).

Even when you do qualify, the NHS route includes mandatory wraparound diet and activity support. That is not a barrier (it is part of the treatment) but it is something to plan around.

When the NHS route is not available to you right now

Many people find they do not meet the current cohort criteria, or their GP practice has not opted in, or they simply cannot face a waiting list that could stretch months. That is a genuinely frustrating position to be in, and it is one a lot of people are navigating at the moment.

A private prescription is a legal and regulated alternative. Under UK rules on who can prescribe weight loss injections, a GPhC-registered Independent Prescriber working at an online pharmacy can carry out the clinical assessment and, if appropriate, issue a prescription. The medicines themselves are the same licensed UK products (tirzepatide or semaglutide) sourced through the authorised supply chain.

The private eligibility criteria broadly follow the licensed indications in the product's SmPC: adults with a BMI of 30 or above, or 27 or above with at least one weight-related condition. BMI alone is never the whole picture, a prescriber reviews your full health history, any medicines you take, and whether treatment is appropriate for you specifically. What private weight loss injections cost is worth understanding before you start, because legitimate pricing reflects consultation, prescription, and clinical oversight, not just the pen.

One quick check worth doing before you book anywhere: look up the pharmacy on the GPhC pharmacy register. It takes under a minute and confirms the service is regulated. Any seller that does not appear there should not be dispensing prescription medicines.

Wegovy and the specialist pathway, a different NHS route

Semaglutide (Wegovy) sits on a different NHS pathway from tirzepatide. It is recommended by NICE (TA875) only within specialist weight management services, for a maximum of two years, for adults meeting specific BMI and comorbidity thresholds. That means a GP referral to a tier 3 or tier 4 service, and in most parts of England, a significant wait.

The private route for semaglutide follows similar logic to tirzepatide: a GPhC-registered prescriber assesses you, and if you are suitable, a prescription is issued. If you are wondering whether GPs can prescribe weight loss injections on the NHS versus privately, NHS England's guidance on weight management injections sets out both pathways clearly if you want to compare them.

It is also worth knowing that Ozempic (also semaglutide) is licensed for type 2 diabetes, not weight management. If someone suggests obtaining it for weight loss, that is a different and murkier territory. The licensed weight loss injections for this purpose are Mounjaro and Wegovy specifically.

Starting a private prescription: what the process looks like at a regulated pharmacy

If you decide to explore the private route, the process at a well-run pharmacy is more straightforward than many people expect. At nume, it begins with a free consultation, no GP referral, no waiting room. A GPhC-registered prescriber reviews your answers the same day. This is a real clinical review, not an automated tick-box system: a named clinician reads your case, and people often ask whether their GP could have done the same thing, which is a fair question given how recently primary care prescribing opened up. If treatment is appropriate, your prescription is issued and your first pen is dispatched, arriving free the next working day in plain packaging.

Photo ID is checked, weight is verified on a live video call, and your GP is notified in line with GPhC guidance. Those steps exist to protect you. If you want to read more about the team overseeing prescribing decisions, our clinical lead's profile sets out his credentials. And if a private route sounds right for you, you can check your eligibility with a free consultation whenever you are ready.