How Much Does the Weight Loss Injection Cost in the UK?

Why the official price rise matters when you're comparing quotes

If you want a clear starting point for understanding how much weight loss injections cost, look at what happened in September 2025. Eli Lilly raised the UK list price of Mounjaro substantially, the per-pen list price at the highest dose moved from around £122 to around £330. Private providers set their own prices above that cost base, so the monthly figure a patient pays varies considerably across doses and services. Wegovy (semaglutide) sits on a different list price structure, and its monthly cost similarly depends on the dose reached during titration.

NICE's appraisal of tirzepatide, published as TA1026, confirmed the clinical case for these medicines and set the framework for NHS access, but NHS availability remains tightly phased and criteria-restricted. For most adults buying privately today, the starting question is less "how much is the sticker price" and more what that figure actually covers.

The NHS tirzepatide rollout is expanding in stages; you can read the current eligibility thresholds on our weight loss injections overview. For now, private treatment is the practical route for most people.

What the headline monthly price often doesn't include

A quoted monthly price from any provider should be examined carefully before it means anything useful. Some services charge separately for the initial consultation, which can run to £50 or more. Others bill for the prescription itself, add a dispensing fee, or charge for delivery on top. Aftercare (dose-review calls, clinical check-ins, answers to questions mid-treatment) is sometimes bundled, sometimes an add-on, and sometimes simply absent.

This matters practically. If you start at 2.5mg and titrate upward over several months, you may need clinical input at each step to confirm you're ready to increase. If that review isn't included, you pay again each time. A quick check worth doing before you sign up to any service: look the pharmacy up on the GPhC's online register and read the full price breakdown, not just the per-month headline. Takes under a minute and tells you whether you're looking at a registered, regulated pharmacy.

The full breakdown of what private treatment costs covers these variables in more detail, including what to ask any provider before committing.

What the nume price actually includes, and why we're transparent about it

At nume, the price you see on the treatment page covers the consultation, the prescription, the medicine, next-working-day tracked delivery and ongoing aftercare. Nothing is billed separately afterward. There are no subscriptions and no auto-renewals; every repeat order is clinically reviewed before it goes out.

We are not trying to be the least expensive option on the market. That is a deliberate choice. Running a same-day clinical review through a GPhC-registered Independent Prescriber (rather than a short automated questionnaire) costs more to operate than a checkbox form does. So does sourcing medicine through the licensed UK supply chain, maintaining a GPhC-registered pharmacy (registration number 9012878, verifiable at the GPhC register), and staffing prescriber-led aftercare seven days a week. We think that trade-off is worth being open about.

If you want to explore how our pricing compares across doses, our pricing guide lays that out plainly, and our guide to affordability discusses what good value actually looks like for a prescription medicine.

Why 'cheapest' is the wrong question to lead with for a prescription medicine

The MHRA has warned publicly and repeatedly about counterfeit weight-loss pens circulating online and via social media. In 2025, enforcement action resulted in roughly 20 million doses of illegally traded weight-loss medicines (around £45 million street value) being seized, including the first UK site found to be manufacturing counterfeit tirzepatide pens. Fake pens have in some cases contained insulin rather than the stated medicine, with serious consequences for those who used them.

The pattern that links most unsafe purchases is price. Listings that sit far below the market rate, sellers offering these medicines without requiring a prescription from an independent prescriber, and "discount codes" from unverified sources are the clearest red flags. You can report a suspect seller through the MHRA's Yellow Card scheme.

For a medicine that requires clinical assessment, a sourcing infrastructure, cold-chain logistics and ongoing prescriber oversight, the cheapest listing answers the wrong question. The right questions are: is this pharmacy on the GPhC register, is a real prescriber reviewing my case, and does the price reflect what responsible supply actually requires? Our guide to cheapest weight loss injections addresses this directly, and our about page sets out how the service is structured. When you're ready to find out whether treatment is suitable for you, start your free consultation and a prescriber will review your case the same day.