What do weight loss injections cost per month in the UK?

How is the monthly cost of weight loss injections structured in the UK?

Mounjaro and Wegovy are both prescribed on a titration schedule, meaning the dose (and often the price) increases over time as your prescriber moves you up through the strengths. Mounjaro runs from 2.5mg up to 15mg across six pen strengths; Wegovy runs from 0.25mg to 2.4mg, with the newly approved 7.2mg pen now also licensed. Because each pen contains four weekly doses, one pen broadly equals one month of treatment.

Since Eli Lilly adjusted Mounjaro's UK list price upward from 1 September 2025, the highest-strength pen carries a list price of around £330, and reported private prices across providers now range roughly £149 to £375 per month by dose and supplier, as widely reported at the time. If you want a clearer sense of how much weight loss injections cost per month at each stage of treatment, that breakdown is worth reviewing before you begin. These figures are the only realistic reference points for cost comparisons, and even they are hedged: your own monthly cost depends on which dose you're at and who you use.

The full breakdown of how monthly pricing works by dose is worth reading before you commit to any provider. The number that matters is the total cost of everything included, not the headline pen price.

What do headline prices for weight loss injections usually leave out?

A price comparison only tells you something useful if the things being compared are the same. Many providers list only the pen price. Separately, you may find a consultation fee (sometimes £30–£75), a prescription charge, a delivery fee per order, and charges for any follow-up or dose-review support. Some services also operate on a subscription model that auto-renews; others charge extra if you need clinical input between orders.

None of that is inherently wrong, different services make different choices. But the consumer education point is this: a £149/month listing that adds £40 in consultation and delivery fees is not cheaper than a £175 all-in price. Work out the real monthly figure before deciding.

Our guide to what weight loss injection costs genuinely include runs through the categories to check for, so you can compare like with like. It's a question our prescribers hear most weeks from people who switched to us after a surprise invoice elsewhere.

Where does nume sit on price, and why?

Plainly: we are not the cheapest option, and that's deliberate. One transparent price covers the consultation, prescription, treatment, and free next-working-day DPD delivery. There are no add-ons, no subscription and no auto-renewal. Every repeat order goes back to a prescriber for clinical re-review before anything is dispatched.

The reason we're not the cheapest is that we don't strip out the parts that keep the service safe. A GPhC-registered Independent Prescriber reviews every consultation personally, the same day for orders placed before 12pm Monday to Friday. Identity is verified by photo ID, and weight is confirmed on a live video call. That infrastructure costs something. We think it's worth it; you can decide whether you agree.

You can see our current treatment pricing on the treatment and consultation page. We don't print per-pen prices in body copy, because what you pay depends on the dose your prescriber recommends, and that's a clinical decision, not a shopping one. Our clinical team and pharmacy details are published openly, including our GPhC premises registration number (9012878), verifiable directly on the GPhC register.

Is 'cheapest' the right question to ask about a prescription medicine?

Mounjaro and Wegovy are Prescription-Only Medicines. That classification exists because they carry real clinical considerations: drug interactions, contraindications, dose titration, and side effects that need monitoring. The MHRA has been explicit that these are not medicines for quick or cosmetic weight loss, and has warned publicly about fake pens sold through social media and unverified online sellers, some containing harmful substances in place of the active ingredient.

Counterfeit pens have been found in the UK supply chain at scale. The MHRA's guidance is to buy only from a pharmacy you can verify on the GPhC's public register, and to report any suspect sellers via the Yellow Card scheme. If you are researching a monthly weight loss injection and want to understand what a safe, clinically supported service should look like, that context matters as much as the price. A low price from an unverifiable source is not a saving, it's a different risk calculation entirely.

The right measure for any GLP-1 treatment is whether it comes with genuine clinical oversight, a licensed supply chain, and a prescriber who is accountable for your care. If you'd like to understand more about how these medicines work and whether they might be appropriate for you, our weight loss injections overview covers the evidence and the eligibility criteria. For a broader look at the treatment options nume offers, the weight management page is a good starting point. And if you have specific questions before starting, our FAQs address the most common ones, including guidance for anyone specifically looking for low cost weight loss injections and wanting to know what to check before choosing a provider. NICE's appraisal of tirzepatide, TA1026, and the NHS patient information for tirzepatide are both worth reading for an evidence-grounded picture of what these medicines do.