How much weight should you expect to lose on semaglutide — and what does treatment actually cost?

The real question behind the cost: what are you actually deciding?

Most people searching for the cost of semaglutide are really asking whether the treatment is worth it, and whether they can afford it sustainably. Those are sensible questions. The answer starts with understanding how UK private pricing is structured.

Private weight-loss treatment in the UK is priced per pen, which works out to a monthly figure that varies by dose and by provider. Since Eli Lilly raised Mounjaro's list price in September 2025, market prices across GLP-1 treatments have shifted noticeably. For context, Wegovy pricing in the UK typically sits somewhere in the range reported by providers, though this moves with supply and clinical review requirements. The only price you should trust is the one a registered pharmacy states clearly, inclusive of everything.

Which brings us to the second part of the decision: not just how much, but how much for what. A number on a screen means little until you know what it covers. That's the part many headline prices leave out.

What the cheapest listings usually leave out

A quoted monthly price for semaglutide sometimes covers the pen and nothing else. Before you compare figures, it's worth checking whether a consultation fee is added at checkout, whether a prescription charge sits separately, whether delivery is included or billed per order, and whether any aftercare (dose queries, side-effect support, repeat-prescription review) costs extra or is simply absent.

Those aren't small omissions. A GLP-1 medicine taken over months requires real clinical oversight. NHS England's guidance on weight-management injections makes clear that safe use involves ongoing clinical review, not just an initial prescription. If a low-cost listing doesn't mention what happens after the pen arrives, that's worth noting before you commit.

There's a separate issue with sellers who advertise GLP-1 medicines at prices well below the market, particularly through social media. The MHRA has warned repeatedly about counterfeit pens; some have contained the wrong medicine entirely. The only safe route is through a pharmacy you can verify on the GPhC register.

What the price includes at nume, and why we're not the cheapest

We set our price to cover everything: the consultation, the prescription, the medicine, delivery and 7-day aftercare support. No subscription. No auto-renewal. Every repeat order is reviewed by a prescriber before it goes out. We lose the price comparison on purpose, because the infrastructure that makes treatment safe costs something, and we'd rather be honest about that than shave costs from the parts that protect you.

When you order by 12pm on a working day and your case is clinically approved, your treatment is dispatched the same day. It arrives the next working day with DPD tracking on your phone, in a plain box that doesn't announce what's inside. The pen itself is a pre-filled device, and if you're unsure how much semaglutide to inject for your first use, your prescriber and the patient information leaflet walk you through everything you need.

Our prescribers are GPhC-registered Independent Prescribers. A named clinician reads your consultation, our clinical team oversees every case. That matters for a medicine where your dose is titrated over months and where certain health conditions or other medicines affect suitability.

You can see exactly what our treatment packages include on the treatment page. Current pricing is shown there; we don't list per-pen figures in articles because they change with dose and because a price without clinical context tells you very little.

Why 'cheapest' is the wrong measure for a prescription medicine

Semaglutide (Wegovy) is a prescription-only medicine for a reason. It affects how your body processes food, it interacts with other medicines, and it's contraindicated in certain health conditions. The cheapest listing answers the wrong question. The right question is: will I be assessed properly, supplied genuine medicine from the licensed UK supply chain, and supported if something doesn't feel right?

Our pharmacy is GPhC-registered, you can check registration number 9012878 directly on the GPhC register. That's a live public record, not a badge we designed. Any legitimate online pharmacy supplying prescription medicines in the UK will be on that register. If a seller isn't, or won't tell you their registration number, that's a reason to walk away.

For more on what realistic weight loss on semaglutide looks like based on the trial evidence, that page works through the numbers in detail. If you're weighing up whether alternatives to Wegovy might suit you better, that's a reasonable question too, one our prescribers can help you think through. Our treatment overview covers all the options we prescribe, and if you want a clearer picture of how much semaglutide to take at each stage of treatment, we cover that in detail as well.

A small saving on a prescription medicine is not worth an unknown supply chain. If you'd like to understand how much weight you can expect to lose on semaglutide before committing, we cover that honestly, then start your free consultation and let a real clinician decide what's right for you.