In February 2025 there were more than 600,000 searches for Mounjaro in the UK. An increase of over 4000% compared to the previous month, showcasing the rising demand and interest in the revolutionary weight loss jab. With Mounjaro going viral on social media and the NHS announcing it will begin offering the weight loss drug to a select group of patients over the next few years, thousands are searching for more information. We’ve gathered the important things we think you need to know if you’re exploring this weight loss method.

What is Mounjaro? 

Mounjaro is a brand of weight loss injection which is self-administered weekly into the upper arm, stomach or thigh. It works similarly to Wegovy (known as Ozempic in the US) and mimics two key hormones:

• GLP-1: This hormone is released by the body after you’ve eaten, helping you to feel fuller which in turn suppresses your appetite, allowing you to reduce your calorie intake. 

• GIP: This hormone helps to regulate energy balance and slow down the digestion of food, meaning you feel fuller for longer. 

Clinical studies for Mounjaro showed a 21% weight loss in adults using the highest dose, compared with 15% weight loss with the highest dose of Wegovy.

By reducing your calorie intake, you are able to lose weight more effectively than alternative methods.

Who is Suitable for Mounjaro? 

In December 2024, the NHS announced it would begin offering Mounjaro weight loss injections, however only to those with the highest clinical need. It’s estimated around 220,000 people will have access to the injection over the next three years. Mounjaro is however available privately for those who wish to purchase the weight loss injection. 

• Mounjaro is approved for a select group of patients with severe obesity:

• BMI of over 30 (obese) 

Anyone with a BMI of over 27 who has at least one weight related health problem including diabetes, high cholesterol and high blood pressure.

 Anyone with a BMI below this, should consider alternative methods of weight loss. Injecting Mounjaro or any weight loss drug when your BMI is below the approved threshold could be dangerous and you are likely to experience unnecessary side effects. 

Can you lose weight just from using Mounjaro? 

Most people who begin using Mounjaro will find they start to notice weight loss within the first few weeks. Due to the dramatic reduction in calories consumed, it’s common to experience weight loss without the need for exercise or dieting. This is not the recommended way to lose weight and sustain weight loss long-term. 

It’s important to understand the psychology behind why people become overweight or obese. For many it’s unhealthy eating habits and little to no exercise over a long period of time which causes them to gain weight. When taking Mounjaro, your ability to eat reduces dramatically because you don’t have the appetite to eat or you will feel fuller much quicker and for longer. However, when you come off the injection, your appetite will return to normal. So if you haven’t made lifestyle changes throughout the process, the chances of regaining the weight you’ve lost are extremely high. 

Can you purchase Mounjaro Online?

There are lots of online pharmacies selling Mounjaro but we would urge you to be extremely cautious when purchasing weight loss injections in this manner. Firstly, there are lots of counterfeit products being sold online which contain harmful ingredients or do not contain the active ingredient required for weight loss. Just because a product claims it is Mounjaro, doesn’t mean it is. Always purchase from reputable clinics or pharmacies so you can ensure legitimacy and safety. 

Mounjaro weight loss injections should be prescribed by a doctor or nurse prescriber who has seen you in person and has experience in managing weight loss patients. They should be given to patients with a BMI which falls within the approved range and support should be offered throughout the process. Any reputable clinic will ensure you have regular follow ups and support, encouraging you to make changes to your lifestyle and habits to ensure you sustain your weight loss long after Mounjaro. 

There are many cases whereby online pharmacies only request your height, weight and a picture of you. This is enabling thousands of weight loss injections to be prescribed to people whose BMI falls way below the approved and recommended range. This is extremely dangerous and not worth putting your health at risk. 

Will I put the Weight I Lose Back on When you Come off Mounjaro?

Mounjaro helps to suppress your appetite and keep you feeling fuller for longer, helping you to reduce your calorie intake and in turn lose weight. When you stop taking Mounjaro, your normal appetite will return. This is where it’s important to address and change your eating and exercise habits to ensure sustained, long-term weight loss. If these habits are not altered, it is likely you will slowly gain the weight lost when you stop the injections. 

How do you inject Mounjaro?

Mounjaro is a weekly weight loss injection which should be injected on the same day each week, each pen will last you four weeks. Every patient will be started on the lowest dose and moved up month by month after a check in with their medical professional. Some patients choose to stay on the same dose rather than moving up if they find it is effective for them. 

Here at MediZen we show all patients how to inject themselves when prescribing the first pen. The first dose of Mounjaro will be injected in this appointment so our doctor or nurse can ensure you inject correctly. Following this you will self-administer the injections on your chosen day each week. Some clinics may offer to inject for you each week if you struggle to do this yourself.

Is Mounjaro available on the NHS?

Mounjaro will be available to a very small number of patients through the NHS in 2025. Initially it will be offered to those with a BMI of over 35 with at least one obesity related health problem – potentially up to 3.4 million people. However the roll out will be slow and it is expected around 220,000 patients will benefit from Mounjaro in the first three years. 

For those who have a high BMI and are looking to lose weight but may not be a priority on the NHS, Mounjaro is available privately. 

How much weight can you lose on Mounjaro?

Clinical studies showed that patients on the highest dose of Mounjaro lost up to 22.5% of their starting body weight after 72 weeks on the injections. This figure will of course vary person to person and is dependent on diet, exercise, underlying health conditions and age. Those who lose the most weight will be the ones who maintain a balanced, healthy diet throughout, alongside regular exercise. 

Why choose MediZen for Mounjaro?

Here at MediZen we have many years of experience helping weight loss patients achieve their goal. Weight loss isn’t just about the pounds you lose or the number on the scale, it’s about changing habits, improving your health and gaining confidence. 

All of our Mounjaro patients will have a thorough consultation and if prescribed the injection, will attend regular follow ups and check ins to monitor your progress and address any concerns. We will provide as much support as you require, with the goal of helping you to maintain your weight loss long-term. 

Start your weight loss journey today with the Midlands Premier Medical Aesthetic Clinic and regain your confidence safely and effectively. Book a consultation with us today to discuss your options and find out more.