What is your GLP-1 actually costing you?
Enter your pen, your pharmacy price and where you started. You get your monthly and annual spend, what each kilo has cost so far, what carrying on to target would cost, and a plain checklist for stopping well if that is where you are heading.
Your numbers
Prices are pre-filled with a typical UK online-pharmacy price for that dose (September 2026). Change it to what you pay.
What it costs
If you carry on
If this price and supply pattern continue, this is the estimated spending over your planning period. It does not predict your weight, how long treatment will be needed, or whether your prescription, price or coverage will change.
If you stop
This planner is independent of any pharmacy or manufacturer, so it can set out the other side of the decision plainly: the medication spending that would no longer apply, what the research does and does not say about regain, and a checklist to work through with your prescriber so that stopping is planned rather than abrupt.
Weight regain is common after weight-management medication is stopped, but its timing and extent vary. In the BMJ systematic review of 37 studies and 9,341 adults (West et al., 7 January 2026), average regain across all medicines was about 0.4 kg a month, and about 0.8 kg (1.8 lb) a month in the semaglutide and tirzepatide studies, over an average follow-up of 32 weeks. Research averages cannot predict your experience or establish that a checklist prevents regain. Discuss follow-up, nutrition, activity and any treatment changes with your prescriber.
Before your last dose
- Tell your prescriber you intend to stop and ask how they recommend doing it. Some step down, some stop outright. That decision is theirs and yours, not this page's.
- Ask what regain would prompt them to see you again, and write the number down. A threshold agreed in advance is easier to act on than a feeling.
- Record your last-dose date, your weight, your waist measurement and, if you have them, your recent blood results. This is your baseline for the next twelve weeks.
- Write down the three meals you eat most weeks on the medication. Those are your maintenance defaults, not something to redesign later.
- Decide now where the freed-up money goes each month, and keep one month's worth aside as a restart buffer so a return is a decision, not a scramble.
Weeks 1 to 4
- Keep the meal structure you already have: same times, protein-first plate, the portions you are used to. Review meals as appetite and nutritional needs change, and ask for individual support if you struggle to eat enough, feel unwell or find eating distressing.
- Expect hunger and food thoughts to come back. That is the medication leaving, not a failure. Have your planned snacks in the house before it happens.
- Weigh once a week, same day, same conditions. Daily weighing in this window produces noise and anxiety in equal measure.
- Keep water and fibre where they were. Both did quiet work while the medication was in the picture.
- Note any digestive changes. Most settle; anything that worries you is a call to your prescriber or pharmacist, not a forum.
Weeks 5 to 12
- Add one movement habit you can keep on a bad week. Resistance work twice a week protects the muscle you kept; a daily walk protects the routine.
- Sleep and alcohol both move appetite more than most people expect. If weight is creeping, look there before looking at food.
- Compare your week-12 weight with your baseline and with the threshold you agreed. If you have crossed it, book the appointment you already planned.
- Decide what maintenance looks like for the next year, in writing: the meals, the weigh-in day, the movement, the number that triggers a conversation.
How the planner works
How much does Mounjaro cost per year in the UK?
At the UK online-pharmacy prices sampled in September 2026, Mounjaro costs between about £1,807 over 52 weeks on the 2.5 mg starting dose and about £3,887 on 15 mg, before consultation fees. A Mounjaro KwikPen holds four weekly doses and covers 28 days, so 52 weeks is thirteen pens, not twelve. Starting doses are short-term steps, not an annual treatment quote. Prices rose sharply in September 2025 and vary between providers by £60 or more per pen at the same dose.
| Mounjaro dose | Price per 28-day supply | Per 52 weeks (13 supplies) |
|---|---|---|
| 2.5 mg (starter) · short-term starting dose | £139 | £1,807 |
| 5 mg | £159 | £2,067 |
| 7.5 mg | £229 | £2,977 |
| 10 mg | £249 | £3,237 |
| 12.5 mg | £279 | £3,627 |
| 15 mg | £299 | £3,887 |
How much does Wegovy cost per year in the UK?
At the UK prices sampled in September 2026, a Wegovy pen costs about £95 at the starting doses and around £195 at the 2.4 mg maintenance dose, which is roughly £1,235 to £2,535 over 52 weeks on thirteen 28-day pens. Wegovy and Mounjaro are different medicines with different dose stages, so a lower price per pen is not a like-for-like comparison.
| Wegovy pen dose | Price per 28-day supply | Per 52 weeks (13 supplies) |
|---|---|---|
| 0.25 mg (starter) · short-term starting dose | £95 | £1,235 |
| 0.5 mg | £95 | £1,235 |
| 1 mg | £100 | £1,300 |
| 1.7 mg | £160 | £2,080 |
| 2.4 mg | £195 | £2,535 |
How much does the Wegovy pill cost in the UK?
The Wegovy pill is oral semaglutide, a once-daily tablet launched privately in the UK in 2026 in 1.5 mg, 4 mg, 9 mg and 25 mg strengths; 25 mg is the maintenance dose. It is sold as a 30-tablet pack, so twelve packs cover 360 days, not a full year; the table shows a 365-day equivalent. At September 2026 prices a starting pack costs about £100 to £155 and the 25 mg dose about £180 to £270, so a year at maintenance is roughly £2,616. Whether a tablet or an injection suits you is a question for your prescriber.
| Wegovy pill dose | Price per 30-tablet pack | Per 365 days (12 packs cover 360) |
|---|---|---|
| 1.5 mg daily (starter) · short-term starting dose | £135 | £1,642 |
| 4 mg daily (escalation) | £145 | £1,764 |
| 9 mg daily (escalation) | £165 | £2,008 |
| 25 mg daily (maintenance) | £215 | £2,616 |
Prices are a mid-market point per 28-day supply or 30-tablet pack, taken on 8 September 2026 from medino.com's published Mounjaro, Wegovy and Wegovy pill price comparisons (which list named UK providers, updated 3 to 11 September 2026) and cross-checked against comparemj.co.uk and comparewg.co.uk; the cheapest listed providers sit £20 to £60 below these and the most expensive £50 or more above. They are not a primary survey of every pharmacy. Some providers add a consultation fee or charge for needles and sharps bins. These tables are UK reference prices; in other currencies the planner works from the price you type in. Refreshed quarterly.
How is cost per kilo lost calculated?
Spend per kilo lost is your total spend so far divided by the weight you have lost so far, in whichever unit you chose. It is a retrospective ratio, not a measure of value for money or a way to choose a treatment, and it only appears when your weight now is below your starting weight. If you leave the spend field blank, the planner estimates it as months on treatment multiplied by your current monthly cost. Your actual total may differ, which is why you can type it in.
How is the "if you carry on" figure worked out?
The planner takes your monthly cost at today's price and multiplies it by the planning period you choose: three, six or twelve months. For 28-day supplies the year is counted as thirteen supplies, which is 52 weeks or 364 days; for 30-tablet packs the yearly figure is a 365-day equivalent, and twelve packs cover 360 days. Where a starter price is introductory, the first eligible fills are counted at that price and the rest at the repeat price. It is a spending scenario at unchanged prices. It does not predict your weight, how long treatment will be needed, or whether your prescription, price or coverage will change.
What happens when you stop taking a GLP-1 medication?
Weight regain is common after weight-management medication is stopped, but its timing and extent vary from person to person. The BMJ systematic review published on 7 January 2026 (37 studies, 9,341 adults, average follow-up 32 weeks) found average regain of about 0.4 kg a month across all the medicines studied and about 0.8 kg (1.8 lb) a month in the semaglutide and tirzepatide studies, with modelled returns towards baseline over roughly one and a half to two years. Those are population averages; they cannot predict your experience or show that any checklist prevents regain. How to stop, whether to step down, and when to restart are decisions for you and your prescriber.
Who made this, and why is it free?
The planner is published by The Reset Edit Ltd (company 16430780, England and Wales) as part of GLP Reset™, an independent set of companion guides for people using or coming off GLP-1 medication, wherever they live. This edition is priced for the UK; the other edition is linked at the top of the planner. We do not sell or prescribe medication, we take no referral fees from pharmacies, manufacturers or telehealth companies, and the planner does not require an email address. We make our money from the paid guides, which is why the free tool can be honest about stopping.
Not medical advice. This planner provides cost arithmetic and organisational support only. It does not recommend starting, stopping, tapering or changing the dose of any medication. Decisions about your treatment belong with your prescriber, pharmacist or GP. If you experience symptoms that concern you, contact them or NHS 111.
Prices: see the tables above, September 2026. Regain evidence: West S. et al., The BMJ, 7 January 2026 (Nuffield Department of Primary Care Health Sciences, University of Oxford). Last reviewed 12 September 2026.