How often can you order Mounjaro in the UK?

Does Mounjaro automatically renew, or do you have to reorder each time?

Each Mounjaro pen is designed for four weeks of treatment, one injection per week. When that pen runs out, you need a new prescription before any pharmacy can supply another. That is not a procedural quirk; it is UK law. Human Medicines Regulations require a valid prescription for every supply of a prescription-only medicine, and the NHS's clinical information on tirzepatide is clear that Mounjaro cannot be obtained without one.

At nume there are no rolling subscriptions and nothing dispatched without a prescriber's sign-off. When you're ready to reorder, you submit an updated health check (current weight, any changes in health, how you've tolerated the previous dose) and a prescriber reviews it. That usually means your next pen is approved and on its way the same day you ask for it, provided you order before 12pm. You can read more about the full ordering process on our Mounjaro order page.

One practical point worth knowing: if a dose increase is part of your plan, the prescriber will want to see that your current dose has been tolerated well. Evidence of that is part of the clinical review, not a box-ticking exercise.

How do you know whether a Mounjaro supplier is legitimate?

This matters more than many people realise. The MHRA has issued repeated warnings about counterfeit weight-loss pens sold online, fake products have been seized in large quantities across the UK, and some have been found to contain the wrong substance entirely. The only way to verify a UK online pharmacy is to check it on the GPhC's public pharmacy register. A legitimate service will have a GPhC premises registration number it displays openly, nume's is 9012878, verifiable directly at the register.

Red flags to watch for: any seller offering Mounjaro without requiring a prescription and clinical assessment, prices dramatically below what legitimate pharmacies charge, discount codes promoted on social media, or sellers you cannot trace to a registered premises. The MHRA asks anyone who encounters a suspect seller to report it via the Yellow Card scheme. If you want to understand what makes a clinically-run online route different from these risks, the guide to sourcing Mounjaro safely covers the main points.

Medicines supplied through the licensed UK supply chain (from manufacturers like Eli Lilly through authorised wholesalers to a registered pharmacy) carry a chain of custody that is simply absent from informal sellers. That chain is one of the things you pay for when you use a regulated service, and it is worth keeping in mind if you are looking to buy Mounjaro online and want to be confident you are using a service that meets that standard.

Who is eligible to reorder, and what does the review actually check?

Eligibility for Mounjaro in the first place requires a BMI of 30 or above, or 27 or above alongside at least one weight-related health condition, examples include high blood pressure, type 2 diabetes, high cholesterol, or obstructive sleep apnoea. Lower BMI thresholds can apply for some ethnic backgrounds under NICE's appraisal of tirzepatide (TA1026). A prescriber considers the whole clinical picture, not the BMI figure alone.

For a repeat order, the review focuses on how treatment is going: weight change, any side effects, general health, and whether a dose change is appropriate. If you have questions about how this works for a specific dose, the 5mg reorder process page explains what the prescriber looks for at that stage. If anything in your health has changed since the last prescription (new medicines, a new diagnosis, pregnancy) that is the moment to raise it, not after the pen arrives.

One thing our prescribers hear fairly often: people who feel slightly nervous about asking to reorder, as though they need to have lost a certain amount of weight to justify it. That is not how clinical review works. The assessment is about safety and appropriateness, not a performance test. If you're unsure where you stand, our FAQs address the most common questions, or you can contact the team before starting.

What is the fastest legitimate route to getting your next pen?

For most people using a regulated online pharmacy, the practical timeline looks like this: submit your updated health information, receive clinical review on the same working day, and (if your order is in before noon) have your pen dispatched that afternoon via DPD for next-working-day delivery. That is the route through nume's free consultation, and it applies to both first-time and repeat patients.

NHS access to Mounjaro follows a different, phased rollout, criteria are strict, and waiting lists at specialist services can be long. Private treatment through a regulated online pharmacy exists precisely for people who either don't meet the NHS thresholds yet or would rather not wait. If you are considering moving up to the next strength, you can find out how to order Mounjaro 7.5 mg through our clinical review process. If you want to explore where private treatment fits alongside what the NHS offers, our guide on where to order Mounjaro covers both routes clearly.

The short answer to how often you can reorder: every four weeks, provided a prescriber is satisfied it remains appropriate. The supply is in your hands, not on a timer.