No long lock-in contract is required to use Mounjaro (tirzepatide). Because it is a weekly prescription-only medicine that needs a prescriber review before each new supply, it is dispensed in monthly cycles — but a monthly cycle is not a fixed-term commitment, and you can pause or stop if your prescriber agrees it is appropriate.
Below is a clear, practical explanation of how Mounjaro supply actually works in the UK, why it is billed monthly, and what your options are if you want to pause, switch or stop.
Do you have to sign up to a subscription to get Mounjaro?
You do not have to sign up to a minimum-term contract to be prescribed Mounjaro. The medicine is supplied one month at a time because each supply must be checked by a GPhC-registered prescriber, so there is a natural monthly cycle rather than a single upfront purchase.
Mounjaro is a Prescription-Only Medicine, so it is only supplied if a prescriber decides it is clinically appropriate after a free online consultation. A prescription is never guaranteed, and treatment is never something you are forced to continue.
Why is Mounjaro supplied monthly instead of all at once?
Mounjaro is supplied monthly because it is dose-titrated and prescriber-reviewed, not because of a sales tactic. Tirzepatide is started low and stepped up gradually, so each month a prescriber checks how you are tolerating the medicine before approving the next supply.
The licensed titration schedule moves through set weekly doses: 2.5mg (starter) → 5mg → 7.5mg → 10mg → 12.5mg → 15mg (the maximum licensed dose). Reviewing you each month lets the prescriber decide whether to hold a dose, step up, or address side effects before more medicine is dispensed. This is standard safe prescribing for GLP-1 and GIP medicines, not a subscription requirement.
What am I actually paying for each month?
Each monthly payment covers the medicine for your current dose, the prescriber review and the dispensing by a UK pharmacy, with tracked delivery — not a membership fee on top. The online consultation itself is free; you only pay when a treatment is prescribed and you choose to proceed.
Mounjaro is priced per month at each dose, and the figure changes as your dose changes:
| Dose (weekly) | Price per month |
|---|---|
| 2.5mg (starter) | £160 |
| 5mg | £185 |
| 7.5mg | £240 |
| 10mg | £260 |
| 12.5mg | £275 |
| 15mg | £295 |
You can see current pricing on the Mounjaro treatment page and compare it with other options on the treatments overview.
Can I pause or stop Mounjaro whenever I want?
You can stop Mounjaro — it is your choice, and no one can compel you to continue a prescription medicine. In practice it is best to discuss stopping or pausing with your prescriber first, so the decision is clinically sensible and you understand what to expect.
Because each supply is reviewed monthly, you are not committing beyond your current month when you order. If you decide not to continue, you simply do not place or approve the next supply. If you want to pause, tell your prescriber so they can advise on timing and on restarting at a suitable dose later.
What happens to my weight if I stop Mounjaro?
Mounjaro does not cure obesity; it works while you are taking it by activating two gut-hormone receptors (GLP-1 and GIP) that reduce appetite. When the medicine stops, that appetite effect fades, and some people regain weight, which is why lifestyle changes alongside treatment matter.
In the SURMOUNT-1 trial, participants on the 15mg dose lost on average 22.5% of body weight over 72 weeks, alongside lifestyle support. Individual results vary; not everyone reaches this. Any decision to continue, pause or stop should be made with your prescriber, taking your overall health and goals into account.
How do I know the pharmacy supplying Mounjaro is legitimate?
A legitimate UK service dispenses through a GPhC-registered pharmacy and lets you verify its registration on the General Pharmaceutical Council register. At The Weight Clinic, medicines are dispensed by our own pharmacy, North Harrow Pharmacy, GPhC registration number 1034996, which you can check at pharmacyregulation.org.
Every treatment is prescribed by a GPhC-registered independent prescriber on our team, and the Superintendent Pharmacist is Andrew Lane (GPhC 2027876). We supply only genuine, MHRA-licensed medicines, dispatched by our own UK pharmacy rather than a third-party warehouse. You can read more on our about page or reach us through contact us.
Who is eligible to be prescribed Mounjaro?
Mounjaro may be appropriate for adults aged 18 or over with a BMI of 30 or more, or a BMI of 27 or more alongside a weight-related condition such as type 2 diabetes, high blood pressure or sleep apnoea. Suitability is confirmed by a prescriber, not chosen by the patient.
Mounjaro is not suitable if you are pregnant, planning pregnancy or breastfeeding; have type 1 diabetes; have a personal or family history of medullary thyroid carcinoma or MEN2; have a history of pancreatitis or severe gastrointestinal disease; have an active eating disorder; have severe liver or kidney impairment; or have a known allergy to tirzepatide.
What side effects should I know about?
The most common Mounjaro side effects (affecting more than 1 in 10 people) are nausea, diarrhoea, constipation, vomiting, decreased appetite and fatigue. These are often strongest when a dose is increased, which is one reason supply is reviewed monthly.
Serious but rare effects include severe allergic reaction, acute pancreatitis, severe hypoglycaemia, severe gastrointestinal disease and worsening diabetic retinopathy. If you experience side effects, you can report them through the MHRA Yellow Card scheme at https://yellowcard.mhra.gov.uk/.
How Mounjaro compares with other monthly options
Mounjaro is one of several weekly or daily treatments supplied in monthly cycles for the same practical reason — prescriber review before each supply. If cost structure or format matters to you, it helps to compare the options rather than choosing on price alone.
- Mounjaro (tirzepatide) — a once-weekly injection acting on GLP-1 and GIP receptors.
- Wegovy injection (semaglutide) — a once-weekly GLP-1 injection.
- Wegovy Tablet (oral semaglutide) — a once-daily tablet taken on an empty stomach.
- Foundayo (orforglipron) — a once-daily small-molecule GLP-1 tablet taken at any time of day, with or without food or water.
You can also see injectable options together on the weight-loss injections page, or browse general guidance on the blog. Whichever you consider, a prescriber decides what is clinically appropriate for you.
This article is for information only and is not a substitute for personalised medical advice. Weight-loss medicines are prescription-only, are not suitable for everyone, and are prescribed only after a clinical consultation with a GPhC-registered prescriber. Individual results vary. Always speak to a UK-registered pharmacist or doctor before starting or changing any prescription medication.
