How Much Does Mounjaro Cost in the UK?

Why does Mounjaro's price vary so much between providers?

The short answer is that different providers bundle different things into their headline price. Some quote the cost of the pen and add consultation fees, prescription charges and delivery on top. Others include everything in one figure. Because Mounjaro is a prescription-only medicine regulated under the Human Medicines Regulations 2012, any lawful supply must follow a clinical assessment by a qualified prescriber, so that step is never optional, even if it isn't always visible in the advertised price.

Dose also plays a significant role. Mounjaro comes in six strengths: 2.5 mg, 5 mg, 7.5 mg, 10 mg, 12.5 mg and 15 mg. Treatment always begins at 2.5 mg (a lower starting strength designed to give your body time to adjust) and is titrated upward by the prescriber over several months. Higher doses carry a higher wholesale cost, so the price you pay can change as your treatment progresses. For a fuller picture of how the titration schedule works, the tirzepatide overview on this site sets out the clinical background in plain terms.

It is worth reading the Mounjaro price comparison guide before committing to any provider, it breaks down what different services typically include and what questions to ask.

What did Eli Lilly's price increase actually change?

In August 2025, Eli Lilly announced it would raise Mounjaro's UK list price from 1 September 2025. The most visible change was at the top of the dose range: the 15 mg pen's list price moved from around £122 to around £330. Lower doses saw smaller increases, but the effect rippled through the private market because providers purchase stock through the licensed UK supply chain at revised wholesale rates.

As widely reported at the time, private monthly prices since then have typically sat between roughly £149 and £375, depending on which dose you are taking and which service you use. These are market-range figures, not fixed tariffs, individual providers set their own pricing within that landscape. The NHS England guidance on weight management injections gives useful context on what a medically sound treatment programme should involve, regardless of whether you access it publicly or privately.

One practical note: if you are planning a first order around a bank holiday, or your payday falls at the end of the month, it is worth factoring in that same-day dispatch depends on orders placed before 12pm on working days, holidays pause that clock. It is also sensible to read about what happens if you take too much Mounjaro, so you feel confident handling your doses safely from the start.

What does a legitimate Mounjaro price actually include?

This is the question most people forget to ask. A compliant, clinically safe Mounjaro price should cover: a consultation assessed by a GPhC-registered prescriber (not a questionnaire reviewed by software); a valid UK prescription; dispensing from a pharmacy you can verify on the GPhC register; and delivery. Some services charge separately for one or more of these. Others include aftercare (clinical follow-up between orders) and others do not.

At nume, one transparent price covers the consultation, prescription, treatment and free next-working-day DPD delivery. There are no subscription commitments and no hidden fees. A GPhC-registered Independent Prescriber personally reviews every consultation the same day it is submitted. That is not the cheapest model to operate, and it is not meant to be. For a prescription medicine, safety and clinical oversight are the right benchmarks, not the lowest per-pen price.

If you would like to understand what the treatment could realistically achieve, the evidence on how much weight people lose on Mounjaro draws on the SURMOUNT trial data published in the New England Journal of Medicine.

Are discount codes for Mounjaro a red flag?

Yes. The MHRA has issued public warnings about fake weight-loss pens sold online and through social media, some containing insulin rather than tirzepatide, and some leading to hospitalisations. In 2025 alone, enforcement actions resulted in the seizure of around 20 million doses of illegally traded weight-loss medicines (approximately £45 million street value), and the first UK site manufacturing counterfeit tirzepatide pens was raided. Sellers offering Mounjaro without a valid prescription, at prices well below the market range, or with promotional codes from unverified sources, are consistent with the risk patterns the MHRA has described. You can report a suspect seller at yellowcard.mhra.gov.uk.

nume does not operate discount codes or promotional offers of any kind. The Mounjaro treatment page shows current pricing transparently. If you want to understand whether treatment is clinically appropriate for you, the eligibility criteria page explains what the licensed requirements look like in practice. When you are ready, you can check your eligibility through a free consultation.