What are the cheapest weight loss injections available in the UK?

Step 1: understand what the market price actually covers

Eli Lilly raised Mounjaro's UK list price on 1 September 2025. Since then, the highest-dose pen has carried a list price of around £330, and typical private prices across the market have ranged roughly £149–£375 per month by dose. Those figures are reported widely and worth knowing, but they don't tell you much on their own.

What they don't show is whether a consultation fee, prescription charge, delivery cost or ongoing support is included. Some providers charge each of those separately. A headline price of £149 might become considerably more once you add the clinical assessment you're legally required to have before the medicine can be prescribed. Take a minute to check the provider's pricing page properly, look for a clear breakdown of what's in the number, not just the number itself. That check takes less than a minute and often changes which option looks cheapest.

Both Mounjaro and Wegovy are Black Triangle medicines under additional MHRA monitoring, and both require a clinical assessment at every stage. Our treatment page sets out what that process looks like at nume.

Step 2: work out what a low price tends to leave out

The things most commonly absent from a low advertised price are: a meaningful clinical consultation (some providers offer a brief automated questionnaire rather than genuine prescriber review), any form of aftercare if side effects develop between doses, and clinical re-review before dose increases. Those aren't optional extras. They're the parts of the process that keep you safe.

Delivery is another one. Free next-working-day tracked delivery is not universal. Some services charge for each shipment, and the cost accumulates quickly over a course of treatment that typically runs for months.

There is also the supply chain question. The MHRA has issued clear warnings about counterfeit weight loss pens sold through social media and unverified online sellers, fake pens have in some cases contained entirely different substances. Any legitimate provider sources through the licensed UK supply chain, and you can verify whether a pharmacy is properly registered in about thirty seconds using the GPhC's online pharmacy register. If a seller cannot be found there, that is a serious red flag regardless of the price they are offering.

Our overview of what cheapest really means for these medicines goes through each of those points in depth.

Step 3: understand where nume sits, and why

We're not the cheapest option. That is a deliberate choice, not an oversight. One transparent price at nume covers the consultation, the prescription, the medicine, tracked next-working-day delivery and seven-day-a-week aftercare. Nothing is added at checkout. There are no separate fees for the clinical review before a dose increase, and no subscription that auto-renews without your knowledge.

Every consultation is read personally by a GPhC-registered Independent Prescriber (a real clinician, not a form routed through software) on the same day you submit it. Our pharmacy holds GPhC premises registration 9012878, which you can verify directly at the GPhC register. Medicines are sourced through Eli Lilly and Novo Nordisk authorised UK supply channels.

If you want to understand more about our clinical team and how oversight works, our clinical lead's profile is a good place to start. And if you have specific questions before committing, our FAQs cover the most common ones.

Step 4: ask the right question about price

For a prescription-only medicine, the price comparison that matters most is not which provider charges the least per pen. It's whether the provider's clinical process is thorough, whether the medicine is genuinely from the licensed supply chain, and whether there is real support available if something doesn't feel right.

NICE's guidance on tirzepatide, published in TA1026, and the NHS England guidance on weight management injections both emphasise that these treatments work best alongside clinical oversight and lifestyle support. If you are comparing providers and want a clearer picture, our guides covering what the cheapest weight loss injection actually is, what's really behind the cheapest weight loss injection prices, who has the cheapest weight loss injections and how cheapest weight loss injection costs break down across the UK can help you ask better questions before you decide. A low price that strips those elements out doesn't represent a saving, it removes the framework that makes the medicine safe to use. The right question isn't which injection is cheapest. It's which service gives you what you actually need to use it well.

When you're ready to find out whether you're clinically suitable, speak to our prescribers, the consultation is free, and there's no obligation.