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On a private prescription, Wegovy typically costs £100–£220 a month and Mounjaro £120–£250 a month, rising with the dose and varying by provider. With titration to higher doses, a realistic first-year budget is £1,500–£2,500 or more. Prices move around, so compare current published rates from GPhC-registered providers.
- ✓Monthly cost climbs as your dose titrates up — budget on the higher doses, not the starter price.
- ✓A realistic first year is £1,500–£2,500+; this is long-term spending, not a one-off.
- ✓UK health insurers generally exclude weight-loss drugs — this is a self-pay market.
What the jabs cost per month
There is no NHS-style flat charge here: weight-loss injections are priced like any private medicine, and providers set their own rates. The figures below reflect the broad range of published UK prices in 2026 — treat them as guides, because pricing has shifted repeatedly as supply and competition have changed, and always check a provider's current list.
| Treatment | Typical private cost per month |
|---|---|
| Wegovy (semaglutide) — lower doses | Roughly £100–£170 |
| Wegovy — higher maintenance doses | Roughly £150–£220 |
| Mounjaro (tirzepatide) — lower doses | Roughly £120–£180 |
| Mounjaro — higher maintenance doses | Roughly £180–£250 |
| Programme extras (coaching, follow-ups) where charged separately | Varies — often bundled into the medicine price |
Why the price varies so much
- Dose. Higher-strength pens cost more, and both drugs are titrated upwards — the same prescription gets dearer as treatment progresses.
- Provider model. Online pharmacy programmes, high-street pharmacy services and private weight-management clinics all price differently. Subscription programmes often bundle prescriber reviews and coaching into the monthly figure; a bare dispensing price may not be comparable like-for-like.
- What's included. Check whether the price covers the prescriber consultation, follow-up reviews, needles and delivery — cold-chain shipping for refrigerated pens can add cost.
- Market movement. Manufacturer list prices, supply and competition have all shifted since these drugs launched, and monthly prices have moved with them — sometimes upwards at short notice. A quoted price is a snapshot, not a promise.
Comparing providers properly means comparing like with like: the all-in monthly cost at the maintenance dose you're likely to settle on, including reviews, needles and delivery. It's also worth knowing the older, cheaper options exist — orlistat tablets cost a fraction of the injectables, and older daily injections sit below the newer drugs on price — though both are generally less effective, which is why the market has moved so decisively to Wegovy and Mounjaro. A responsible prescriber will talk through the trade-off rather than defaulting to the most expensive pen.
The full-course maths
The monthly figure understates the commitment. Titration means most of your first year is spent at middling-to-higher doses, so a realistic first-year budget is £1,500–£2,500 or more, before any consultation fees or blood tests a provider requires. And clinical evidence is clear that stopping usually leads to substantial weight regain, so many people face a choice between ongoing maintenance cost and losing the result — which makes this a multi-year line in the budget, not a one-off purchase.
Build in two other lines. First, monitoring: some providers require or recommend blood tests and follow-up checks, which may or may not be bundled. Second, the possibility of stopping early — a meaningful minority of people discontinue in the first months because of side effects, mostly gastrointestinal, and money spent on unused titration doses isn't refundable. Neither is a reason not to start; both belong in an honest budget.
Spending £2,000 a year on health already?
Getting it safely, and who can prescribe
Wegovy and Mounjaro are prescription-only medicines. A legitimate private provider will assess your eligibility — typically a BMI of 30 or more, or 27-plus with a weight-related condition, checked against the licensing criteria — and a UK-registered prescriber must issue the prescription, with the dispensing pharmacy on the GPhC register. Demand has made these drugs the counterfeiters' favourite: fake pens from unregistered sellers have caused genuine harm in the UK. Our guide to online pharmacies and private prescriptions covers the registration checks; they matter more here than for any other medicine, and the general rules for shopping any script in our private prescription costs breakdown apply too.
On the NHS, access remains narrow: these treatments are available through specialist weight-management services for those meeting strict criteria, and a phased GP-led rollout of tirzepatide began for the highest-need groups — but most people who want the drugs won't currently qualify, which is why the private market is the route most are taking.
Where health insurance fits in
The short version: UK health insurers generally treat weight-loss medication as excluded, so don't expect a policy to pay for your pens — we cover the exclusions, the exceptions and the direction of travel in our separate guide to weight-loss treatment and health insurance, and the insurer-by-insurer position in our GLP-1 market piece.
Where insurance does help is around the edges of the same journey: same-day virtual GP access for the honest conversation about whether medication is right for you, cover for diagnosing and treating weight-related conditions such as joint pain or sleep apnoea, and, on some policies, wellbeing programmes that reward activity. If you're budgeting £2,000 a year for the jabs, it's worth knowing what a policy at a similar monthly cost would and wouldn't add alongside them.
Frequently asked questions
What does a month of Wegovy cost on a private prescription in the UK?
Typically £100–£220 a month depending on dose and provider — lower doses sit near the bottom of that range, higher maintenance doses near the top, and subscription programmes bundling prescriber reviews price differently from bare dispensing. Prices have moved repeatedly, so compare current published rates from GPhC-registered providers rather than relying on a remembered figure.
Why does Mounjaro get more expensive as the dose goes up?
Higher-strength pens carry higher prices, and Mounjaro treatment titrates upwards over several months from a starting dose to a maintenance dose. That means your monthly cost climbs as treatment progresses — typically from around £120–£180 early on to £180–£250 at higher doses. Budget on your likely maintenance dose, not the starter price in the advert.
How much do weight-loss injections cost for a full year?
A realistic first year is £1,500–£2,500 or more, because titration puts most of the year at mid-to-higher doses, and some providers add consultation or monitoring fees. Subsequent years at a steady maintenance dose can be estimated from that dose's monthly price. Treat it as ongoing spending — stopping usually leads to significant weight regain.
Are weight-loss jab prices the same at every online pharmacy?
No — providers set their own prices, and the same drug at the same dose can differ by tens of pounds a month between GPhC-registered services. Bundling muddies comparison: some prices include prescriber reviews, coaching, needles and delivery, others don't. Compare the all-in monthly cost at your likely maintenance dose, and only among registered providers.
What's included in a weight-loss jab subscription price?
It varies, which is why headline prices mislead. Better programmes bundle the prescriber consultation, regular reviews, dose changes, needles, cold-chain delivery and some coaching into the monthly figure; cheaper listings may cover the pen alone. Ask specifically what happens at each dose change and whether follow-up reviews cost extra before comparing two prices.
Do you have to keep paying for weight-loss jabs to keep the weight off?
For most people, largely yes. Trial evidence shows substantial weight regain is common after stopping GLP-1 treatment, so maintaining the result typically means staying on a maintenance dose — and paying for it — or building an unusually robust diet and activity routine while on the drug. Factor multi-year costs in before starting, not after.
Who qualifies for Mounjaro on the NHS?
Access is deliberately narrow: specialist weight-management services treat those meeting strict clinical criteria, and the phased GP-led rollout of tirzepatide that began in 2025 started with the highest BMI groups with multiple weight-related conditions. Criteria widen in stages over several years. Most people who want the drug won't currently qualify, which is why private prescribing dominates.
How do I avoid counterfeit weight-loss pens when buying online?
Buy only through a GPhC-registered pharmacy with a UK-registered prescriber — check the register at pharmacyregulation.org — and treat a price far below every registered provider as the warning, not the bargain. Genuine Wegovy and Mounjaro require a prescription and refrigerated delivery; sellers on social media or sites needing no prescription are where the dangerous fakes live.
Do private providers check your BMI before prescribing weight-loss injections?
Legitimate ones must — the licensing criteria are typically a BMI of 30 or more, or 27-plus with a weight-related condition, and a proper provider verifies height, weight and medical history, often asking for photo evidence or a video check. A service that prescribes without any meaningful assessment is a red flag for both your safety and its legality.
Will Wegovy and Mounjaro prices come down in the UK?
Uncertain. Competition between providers and between the two manufacturers pushes prices down; supply constraints and list-price changes have pushed them up, sometimes sharply. New rivals and eventual generic competition should lower costs over the long term, but nothing about recent history suggests smooth decline. Budget on today's published prices, not hoped-for cheaper ones.