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How much does Mounjaro cost in the UK?

Everything you need to know about accessing tirzepatide.

Written by Lucinda Starr
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Reviewed by Kevin Joshua, BSc, MRSPH
Last updated Jul 08, 2025
6 min read
4 References
How Much Does Mounjaro Cost in the UK? | Juniper
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Key takeaways

  • Mounjaro (tirzepatide) combines GLP-1 and GIP hormones to regulate appetite, improve insulin function, and delay gastric emptying, helping individuals feel fuller for longer and reduce calorie intake.
  • Clinical trials show Mounjaro can lead to significant weight loss, with up to 20.9% body weight reduction over 72 weeks when combined with a balanced diet and exercise.
  • Mounjaro is available through the NHS with strict eligibility criteria or via private programmes like Juniper's Weight Reset Programme, which offers tailored support, medication, and lifestyle guidance for sustainable weight loss.

When it comes to weight loss, chances are you've tried everything. From the latest fitness fads to a reduced calorie diet, religiously hitting that step count or taking cold plunges. It's enough to leave you exhausted and drained of energy.

While there might not be a quick fix for weight loss treatment, you need support and guidance to achieve sustainable results. It's for this very reason that weight loss medications like Wegovy, and Mounjaro are all having a moment in the spotlight, having been found to help aid weight loss.

If you've heard about Mounjaro (tirzepatide), you might know that the effect of the prescription medication on diet (specifically food-seeking behaviour) and its ability to regulate appetite has now come to see it be hailed as a weight loss drug, helping individuals to kickstart their weight loss journey as they commit to making better changes and living a healthier lifestyle.

If you're curious about how much Mounjaro costs in the UK and how this weight loss treatment works, we share everything you need to know about Mounjaro as a weight loss tool.

How does Mounjaro work?

Mounjaro contains the active ingredient tirzepatide, which comes from a class of drugs called GLP-1 agonists. When you consume food, your gut releases a hormone called GLP-1 (glucagon-like peptide-1) that helps the body regulate hunger and blood sugar levels.

Medications like Mounjaro, Wegovy, and Saxenda all try to mimic the actions of this GLP-1 hormone. Where Mounjaro differs, however, is that it also mimics another hormone: glucose-dependent insulinotropic polypeptide (GIP).

GLP-1s work by improving insulin function to lower blood sugar levels, as well as delaying gastric emptying, which then serves to decrease appetite. They also communicate with the brain’s appetite control centre — the hypothalamus — to reduce food-seeking behaviour. 

In addition, GIP is a hormone released in response to food that helps fat cells to 'absorb' more excess energy, preventing fat from being stored in the liver or pancreas. It also helps to regulate blood sugar levels.

As a result, Mounjaro helps to reduce appetite which can make individuals feel fuller for longer. It’s for this reason that those taking the medication often report eating fewer calories, with reduced calorie intake being an essential part of any weight loss programme.

According to a 2021 study, participants who took Mounjaro reported sharper reductions in blood sugar levels and greater weight loss than those taking Wegovy and Ozempic [1].

Mounjaro is taken weekly via injection, with patients typically starting on a 2.5mg-dose injection once weekly for 4 weeks.

As appetite becomes better regulated, patients find they have greater control in sticking to a diet, which has led the drug to be hailed as an effective weight loss tool, especially when combined with regular exercise and a balanced diet.

Is Mounjaro effective for weight loss?

When it comes to weight loss, the saying rings true: there are no quick fixes or magic pills. Despite this, to effectively lose weight in a sustainable manner, support is critical. Weight loss injections can serve as additional tools that help you kickstart your weight loss journey as you look to make a number of lifestyle changes. 

With your appetite levels under control, weight loss injections can help set you up for success and give you the support needed to create sustainable lifestyle habits that will stick for the long term.

According to clinical trials, GLP-1/GIP treatment is the most effective treatment for weight loss that is available right now.

One study of over 2,500 patients from July 2022 found an average of up to 20.9% body weight loss in patients on GLP-1/GIP after 72 weeks. In the same study, up to 90.9% of patients were able to achieve at least 5% weight loss, up to 83.5% were able to achieve at least 10% weight loss and 56.7% were able to achieve at least 20% weight loss in 72 weeks of treatment [5].

Want to see real results? Explore Mounjaro before and after transformations.

Are there any side effects of taking Mounjaro for weight loss?

Mounjaro may be effective for weight loss, but that doesn't mean it's not without its side effects. The most common side effects reported by those taking a Mounjaro prescription include feelings of nausea, diarrhoea, decreased appetite, vomiting, constipation, and indigestion due to the medication's impact on the digestive system [3].

These side effects were typically experienced around the time of injection and when you increase your dosage, with most patients finding their body adjusted and side effects eased off with continued treatment. In rare instances, the drug can lead to renal failure, pancreatitis, hypoglycemia, and gastrointestinal bleeding.

Mounjaro also comes with a boxed warning, which refers to the most serious warning offered by the Food and Drug Administration. According to the FDA, using Mounjaro may increase your risk of developing thyroid cancer. For those with a family member or history of any kind of thyroid cancer, doctors are unlikely to prescribe the medication.

Despite this, it's important to remember that everyone responds differently to medications, with some experiencing no side effects while others might encounter persistent issues. Make sure to chat with your healthcare provider to ensure this treatment is the right choice for you.

If you're thinking of giving Mounjaro a go, here's what you need to know about where it's available in the UK and how much it will set you back.

How much does Mounjaro cost?

Mounjaro is a medication option offered in our Weight Reset Programme, starting from £189 monthly. Juniper's Weight Reset Programme sets you up for life and includes breakthrough medication, a step-by-step coaching course delivered via smartphone and 1:1 support from dietitians and nutritionists from start to finish.

Juniper is the only medicated weight loss programme focused on fat loss and muscle maintenance. This is vital for burning calories, keeping metabolism high, and preventing weight regain. Our app provides easy step-by-step goals around nutrition and movement, designed to support your muscle mass on the medication.

Mounjaro combines GIP and GLP-1, leading to a highly successful medication. In fact, users can experience up to 20.9% body weight loss at 72 weeks [5].

Can I get Mounjaro on the NHS?

Yes, Mounjaro is available on the NHS for weight loss and can now be obtained at GP surgeries in England. Previously, only Wegovy and Saxeda were available on the NHS, however these could only be accessed with a referral to an NHS specialist weight management service.  

It’s important to note that while GPs can now prescribe Mounjaro, access is extremely limited and the eligibility criteria is incredibly strict. As such, officials are asking people to not approach their GPs about the weight loss medication unless they meet the following criteria:

Year 1

  • BMI ≥ 40 (or ≥ 37.5 for some ethnic groups)
  • 4 or more weight-related comorbidities (e.g. type 2 diabetes, high blood pressure, sleep apnoea)

Year 2

  • BMI 35 to 39.9
  • Still require 4 or more co-morbidities

Year 3

  • BMI ≥ 40
  • 3 or more co-morbidities

This staged approach will reach 220,000 patients across the first three years. A full rollout is planned over 8 further years, eventually covering patients with BMI ≥ 35 and at least one comorbidity.

Where can I buy Mounjaro in the UK?

Both Mounjaro and Wegovy are available via our Weight Reset Programme, allowing you to choose which medication — either GIP and GLP-1 with Mounjaro, or GLP-1 with Wegovy — in conjunction with your doctor. For those looking to start their weight loss journey, support is critical from clinical experts and treatment programmes.

That's where Juniper's Weight Reset Programme can step in. Offering a medical approach to losing weight that sees the average patient lose up to 20% of their body weight in one year, Juniper's programme is tailored to you. Designed by clinicians and dietitians, our programme works to effectively suppress appetite and improve metabolic function.

With a private community to help keep you accountable to your weight loss goals, we take a holistic view of weight loss, equipping you with tools to help empower you to make informed decisions regarding a healthy diet and lifestyle changes that will stay with you for life.

Consider it a new era in weight loss, one that understands it's never about just the number on the scale but the confidence, energy and control you feel, too.

Photo credit: Ketut Subiyanto / Pexels

Questions about medicated weight loss?
Not sure if weight loss medication is right for you? Concerned about side effects? Our team will explain how Juniper works and what to expect - so you can make the best choice for your health.
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Juniper patients lose an average of
23%
body weight
in 1 year
Data sourced from 373,000 weight tracker entries in the Juniper app
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80lbs
In one year patients at this start weight will be:
14lbs
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