How much does 5mg Mounjaro cost in the UK — and what should the price actually include?

You've found a 5mg Mounjaro pen for £X, but the checkout page has other ideas

It's a familiar situation. You search for 5mg Mounjaro, find a price that looks reasonable, and click through, only to discover that consultation fees, a prescription charge, and delivery are each listed separately. By the time you reach the payment screen, the pen that looked affordable has climbed by £40, £60, or more. Sometimes those add-ons are buried in the FAQs rather than the product page.

This isn't a minor transparency issue. For a prescription-only medicine, the consultation isn't optional padding, it's a legal requirement. A prescriber has to assess whether Mounjaro is clinically appropriate for you before a prescription can be written. If that assessment isn't priced in, you'll pay for it somewhere. Understanding what a complete, legitimate service actually costs helps you compare properly. The full cost of a 5mg Mounjaro prescription is more useful to look at than the pen price alone.

The Eli Lilly list price increase that took effect in September 2025 pushed the highest-dose Mounjaro pen from around £122 to around £330 at list price, and private providers adjusted their own pricing across all doses accordingly. If you want to understand where the 5ml Mounjaro price sits across the market and what's typically included, that context helps you spot figures that look unusually low. A figure at the very low end of what you see advertised should prompt a question: what's not included?

What 5mg Mounjaro is actually doing, and why the starting dose matters to the price conversation

The 5mg pen is the second step on the Mounjaro titration schedule. Treatment begins at 2.5mg for the first four weeks; that first pen is designed to let your system adjust rather than to produce the full clinical effect. The 5mg dose follows, and it's where many people start to feel the medicine working more meaningfully. Some patients stay at 5mg for longer than the minimum four weeks if their prescriber decides it's the right call.

Understanding the schedule matters when you're thinking about cost, because Mounjaro isn't a single purchase. Most people move through several doses over the course of treatment. If you'd like to see what a full course of Mounjaro costs across the titration pathway, that gives a more realistic picture of the total investment than any single pen price.

Mounjaro works as a dual GIP and GLP-1 receptor agonist, the only licensed weight-management medicine in the UK to activate both pathways. In SURMOUNT-1, participants using the higher maintenance doses achieved around 20–21% average body-weight reduction over 72 weeks, published in the New England Journal of Medicine. The 5mg dose is a step toward those maintenance doses, not the destination for most people. NICE's recommendation (TA1026) covers the full titration pathway up to 15mg for eligible adults.

How nume prices Mounjaro, and why we're not trying to be the cheapest

At nume, one price covers everything: the consultation, the prescription, the medicine itself, and next-working-day delivery to your door. There are no separate fees, no subscription you need to cancel, and no auto-renewal, every repeat order is reviewed fresh by a prescriber before anything is sent. A named clinician reads your answers; the review does not go to an algorithm. If you're approved, and you order before 12pm on a working day, your pen is dispatched the same day. It arrives with DPD, tracked, in a plain box, nothing on the outside to suggest what's inside.

We are not the cheapest option you'll find. That's a deliberate choice. If you're comparing providers and want to know where to find the cheapest 5ml Mounjaro options and what trade-offs each involves, that breakdown is worth reading before you decide. The one transparent price you pay reflects the infrastructure that makes it safe: photo-ID verification, live weight confirmation on video, GP notification in line with GPhC guidance, and prescriber sign-off before every single repeat. You can verify our pharmacy on the GPhC register directly, our registration number is 9012878, checkable at pharmacyregulation.org. Current pricing is shown on the treatment page.

If you want a fuller breakdown of how Mounjaro pricing varies by dose across the market, our Mounjaro price overview covers it in detail. And if you're considering how 5mg compares to the starting dose on cost, the 2.5mg cost breakdown is a useful reference point.

Why 'cheapest' is the wrong question to ask about a prescription medicine

The MHRA has been clear about the risks of sourcing GLP-1 medicines from unverified sellers. In 2025 alone, around 20 million doses of illegally traded weight-loss medicines (worth roughly £45 million) were seized, and the first UK site producing counterfeit tirzepatide pens was raided. Fake pens have contained insulin. A price that looks dramatically lower than the market is a red flag, not a saving.

The MHRA's Yellow Card scheme lets you report suspect sellers as well as suspected side effects. Any legitimate provider selling Mounjaro will be on the GPhC register and will require a genuine clinical assessment before dispensing. Sellers offering Mounjaro without a prescriber's assessment are not operating legally, and they can't guarantee what's actually in the pen.

Price is worth understanding. But for a prescription-only medicine, the question that keeps you safe isn't 'who is cheapest?', it's 'who is doing this properly?' If you're ready to find out whether Mounjaro is right for you, check your eligibility with our prescribers. The consultation is free, there's no obligation, and you'll have a clear answer the same day.