
Key takeaways
- Mounjaro (tirzepatide) combines GLP-1 and GIP hormones to regulate blood sugar, reduce appetite, and prevent fat storage, helping individuals feel fuller for longer and support weight loss.
- Clinical trials show Mounjaro can lead to significant weight loss (up to 21% body weight over 72 weeks), but common side effects include nausea and digestive issues.
- Mounjaro is available on the NHS with strict eligibility criteria and through private programmes like Juniper's Weight Reset Programme, which combines medication with lifestyle coaching for sustainable weight loss.
If youâre ready to lose weight, chances are youâve done your research. Youâll know to ditch the fast food, prioritise sleep, focus on getting those daily steps in and eating a balanced diet. But as anyone who has set out on a weight loss journey can attest, sometimes you need additional support.
When it comes to weight loss tools, youâd likely be familiar with names like Ozempic, Wegovy and Mounjaro for their influence on appetite and blood glucose levels.
While Ozempic is licensed for diabetes treatment here in the UK, medications like Wegovy and Mounjaro are used for weight management and is helping people to change their lives and improve their health.
Suppose youâre not familiar with Mounjaro (tirzepatide). In that case, know that the drug has come to be hailed as a powerful weight loss medication as it serves two functions: a GLP-1 receptor agonist and a glucose-dependent insulinotropic polypeptide (GIP) mimetic.
It might sound like a mouthful, but it basically means the drug works to lower blood sugar levels, decrease appetite, and prevent fat from being stored in the liver or pancreas.Â
So, is it hard to get Mounjaro in the UK? And if so, where is it available? Let's dive in.
How does Mounjaro work?
Mounjaro is the brand name for the active ingredient tirzepatide and is manufactured by the pharmaceutical company Eli Lilly. Unlike drugs like Wegovy and Ozempic, it's the first medication that imitates 2 different hormones that can reduce blood sugar: GLP-1 and GIP.
These hormones are produced by specialised cells in your large and small intestines. After eating a meal, your body releases these hormones to combat rising levels of blood glucose. Both GLP-1 and GIP act on the pancreas to increase insulin production, which lowers blood sugar.
Itâs thought that being unable to regulate glucose levels after meals is a cause of type 2 diabetes, which is why these medications have come to be prescribed for those with the condition, alongside diet and regular exercise. With a once-weekly injection, Mounjaro can help people with type 2 diabetes control and manage high blood sugar levels.Â
GLP-1 also increases the time it takes to empty the stomach, meaning your blood sugar levels are less likely to spike. As a result, people taking Mounjaro report feeling fuller for longer, which can also help with weight loss due to reduced appetite. It also helps fat cells 'absorb' more excess energy, preventing fat from being stored in the liver or pancreas.
GLP-1 and GIP are produced naturally in the body, but their effects only last around 2 minutes. Instead, tirzepatide has modified the structure of the hormones so that they degrade slowly, lasting around 5 days.
As a result, Mounjaro only needs to be administered via weekly injection and patients typically start on a 2.5mg dose once per week for 4 weeks.
According to a 2022 clinical trial of over 2,500 adults with a BMI of 27 or higher, over the course of 72 weeks, participants lose between 15% and nearly 21% of their body weight. Participants who took a higher dose of Mounjaro lost more weight [1].
Itâs believed that as your body adjusts to the weekly injection, you have greater control in sticking to a diet and making the lifestyle changes required for sustainable weight loss.
Want to see real results? Explore Mounjaro before and after transformations.
Are there any side effects when taking Mounjaro?
Like any drug, there are side effects and each person will respond to the drug differently. For Mounjaro, the most common side effects reported are nausea, diarrhoea, a decreased appetite, vomiting, constipation and indigestion due to the medicationâs impact on the digestive system [2].
Mounjaro also comes with a boxed warning, which refers to the most serious warning the FDA offers. They suggest 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.
For those who suffer eye problems related to high blood sugar, like the condition of diabetic retinopathy, it's suggested that using Mounjaro could make it worse. The risk is higher when starting the medication and when the dose is increased.
Is Mounjaro available for weight loss?
Yes, it is. Mounjaro, with it's GLP-1 and GIPÂ combination, is a medication option, alongside Wegovy, which is a GLP-1 medication, in Juniper's Weight Reset Programme â our programme combines lifestyle coaching and guidance from dietitians with weight loss medication for those who are aged between 18 and 75 and meet our strict eligibility criteria.
Is Mounjaro available 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. Â
Itâs 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 â„âŻ40 (or â„âŻ37.5 for some ethnic groups)
- 4 or more weight-related comorbidities (e.g. type 2 diabetes, high blood pressure, sleep apnoea)â
âYear 2
- BMI 35 to 39.9
- Still require 4 or more co-morbiditiesâ
ââYear 3
- BMI â„ 40
- 3 or more co-morbidities
This staged approach will reach 220,000 patients across the first 3 years. A full rollout is planned over 8 further years, eventually covering patients with BMI â„âŻ35 and at least one comorbidity.
Mounjaro for weight loss
Itâs important to remember that thereâs no magic pill for weight loss and the process involves more than just diet and exercise. If you want the kind of support and guidance that ensures you are supported every step of the way, Juniperâs Weight Reset Programme does just that.Â
Juniper takes a medical approach to weight loss that has seen the average person lose over 13% of their body weight in one year. The key is that thereâs no one-size-fits-all approach to losing weight. Rather, each programme is tailored to your weight loss goals.Â
Designed by practitioners and dietitians, the programme uses personalised medication in the form of either Wegovy or Mounjaro. If eligible for medicated weight loss, youâll receive access to medication, along with digital health coaching and weight loss tracking to guide you every step of the way.Â
With a private community of women to help keep you accountable to your weight loss goals, Juniperâs Weight Reset Programme is far from a quick fix.
Instead, it gives you tools that empower you to make informed decisions. By combining medication with holistic health coaching, youâll find it easier to reach your goal weight, welcoming a healthier and happier version of yourself.

in 1 year
- Clinically-backed weight loss treatments
- Personalised nutrition and exercise plan
- Trusted by 30,000 members around the world