Mounjaro Weight Loss Injections

In stock
from £139.00
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    Reduces appetite and food cravings

  • scale icon

    Lose up to 22.5% of your starting body weight

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    Discreet packaging, delivered with Royal Mail

Fill out a short health questionnaire and start your weight loss journey.

Mounjaro is a prescription-only weight loss injection that has recently become available for weight loss in the UK. Mounjaro is one of the most effective treatments for weight loss, and can help you lose up to 22.5% of your starting weight.

Mounjaro is self-injected once per week, and contains an ingredient called tirzepatide. It works by reducing your appetite, so you don’t need to eat as much to feel full.

Mounjaro Prices and Pack Sizes

Pack Size Price
Mounjaro 2.5 mg - 1 pen - 4 dose(s) £139.00
Mounjaro 5 mg - 1 pen - 4 dose(s) £139.00
Mounjaro 7.5 mg - 1 pen - 4 dose(s) £169.00
Mounjaro 10 mg - 1 pen - 4 dose(s) £189.00
Mounjaro 12.5 mg - 1 pen - 4 dose(s) £204.00
Mounjaro 15 mg - 1 pen - 4 dose(s) £204.00
Starter Bundle 2.5 and 5 mg - 2 pens - 8 dose(s) £275.00
Starter Bundle 2.5, 5 and 7.5 mg - 3 pens - 12 dose(s) £439.00
How Our Weight Loss Service Works
Your Weight Loss Journey
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The first few weeks

You should see a lower appetite and less food noise.

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Up to 6 months

You should see weight loss of up to 15%.

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Up to 12 months

Achieve up to 22.5% weight loss during the first year.

About Mounjaro

What is Mounjaro (tirzepatide)?

Mounjaro (tirzepatide) is a weight loss injection that mimics natural hormones in your body, and works by reducing your appetite and making you feel fuller for longer. It is most effective when used alongside a low-calorie diet and an exercise plan for healthy weight loss.

Is Mounjaro approved for weight loss?

Yes, Mounjaro is licensed and approved for weight loss in the UK. As of November 2023, Mounjaro has been approved for weight loss if you have:

  • a BMI (body mass index) of 30 kg/m² or higher (obesity)
  • a BMI between 27 and 30 kg/m² (overweight) and a weight-related health condition, such as high cholesterol, high blood pressure, prediabetes, or heart problems

How does Mounjaro work?

Mounjaro works by reducing your appetite, so you feel fuller after having a meal. This helps you lose weight by making it easier to avoid overeating and snacking, reducing the amount of calories you eat.

Mounjaro contains the active ingredient tirzepatide, which is a type of medication known as both a ‘GIP and GLP-1 agonist’. This means it mimics the effects of naturally occuring hormones that are responsible for regulating your appetite and the speed at which food moves through your intestines. It can also help to stabilise your blood sugar levels by increasing insulin production.

Is Mounjaro an insulin?

Mounjaro (tirzepatide) is not an insulin, although it can help your body to produce more of it. Mounjaro contains tirzepatide, which should not be injected at the same time as insulin. If you have type 2 diabetes, your doctor will create a tailored treatment plan for you, which may include either insulin or Mounjaro treatment.” – Dr Zoe Miller, Medical Editor.

How effective is Mounjaro?

a chart showing the effectiveness of 5mg 10mg and 15mg Mounjaro vs a placebo

Mounjaro is one of the most effective treatments for weight loss. Clinical studies show that people that used Mounjaro over a period of 72 weeks lost:

  • 16.0% of their starting weight on a 5mg dose
  • 21.4% of their starting weight on a 10mg dose
  • 22.5% of their starting weight on a 15mg

This means that you could lose nearly 10 times as much weight on 15mg of Mounjaro than you could compared to dieting and exercising alone.

How to get Mounjaro online in the UK?

You can get Mounjaro online with a prescription in the UK from regulated online services such as ZAVA. Our doctors provide prescription weight loss treatments, supported with diet and exercise plans, to help you safely and effectively lose weight.

It’s quick and easy to get Mounjaro online with ZAVA. All you need to do is complete a short medical questionnaire that will be reviewed by one of our UK-based doctors. If Mounjaro is suitable, your treatment will be delivered to your preferred address.

Can I get Mounjaro over the counter?

No, you cannot get Mounjaro over the counter. Mounjaro is a prescription medication, which means a doctor needs to check that treatment will be safe and effective for you. You may be able to get other weight loss treatments over-the-counter, such as alli weight loss capsules.

How to use Mounjaro injections

a guide to where to injection Mounjaro using approved injection sites

To use the Mounjaro injection safely, follow your doctor’s instructions and carefully check the steps in the patient information leaflet that comes with your medication:

  • Each Mounjaro pen contains 4 doses of the same strength. Set your current dose as instructed by your doctors and according to the patient information leaflet before using the pen.
  • Only inject Mounjaro (tirzepatide) into your skin, never into a vein or muscle.
  • Inject Mounjaro once a week, at the same time each week.

Worried about self-injecting?

It may sound off-putting to have to self-inject your medication. But it may not involve an injection the way you might be thinking of. Mounjaro comes in an easy-to-use injection pen. It is not the same as using an injection needle used for things like vaccines which go into your muscles. Mounjaro uses a much smaller needle and it doesn’t need to be manually pushed in the way a syringe injection does.” – Dr Zoe Miller, Medical Editor.

If you request a self-injection medication from ZAVA, our doctors will give you advice on how to take it and you can message them for free through your account if you need extra support.

What is the most effective way to inject Mounjaro?

The most effective way to inject Mounjaro is by following the instructions given by your doctor, which are also found in the patient information leaflet. These will include advice on where to inject Mounjaro.

Mounjaro should be injected into a different site each week to minimise irritation and pain. This can still be the same injection site, but you should use a different part of your skin. Find a place that works best for you. You can inject a Mounjaro pen into your stomach, thighs or the back of your arms if someone helps you.

If you do inject Mounjaro into your stomach, leave a 5cm gap around your belly button. For those taking other injectable medications, choose a different site to reduce soreness.

What’s the best time to take Mounjaro?

It doesn’t matter what time of day you take Mounjaro as long as you stick to around the same time each week. This helps your body get used to the treatment and can make it more effective.

Mounjaro injection can be taken with or without food. See the ‘Foods to avoid on Mounjaro’ section for more information.

Can you stay on Mounjaro forever?

When taking Mounjaro for weight loss, you should stay on it at least until you’ve achieved your weight loss goals, unless a doctor suggests otherwise. Your doctor will do regular check-ups to monitor your weight and any side effects you may be experiencing.

What happens when you stop taking Mounjaro?

When you stop taking Mounjaro, the amount of it in your system will slowly drop to nothing. You will lose the blood sugar regulating effect and your appetite will go back to normal. If you’re using Mounjaro for weight loss and stop, you may find that your weight goes back to how it was before starting treatment.

You need to keep to your diet and exercise regime to make sure you don’t put weight back on. Weight loss requires a long-term commitment, even with medication.

You shouldn’t stop taking Mounjaro without speaking to your doctor first.

What Mounjaro dosages are available?

The standard Mounjaro dosage plan is as follows:

  • a starting dose of 2.5mg once a week for 4 weeks
  • after 4 weeks, your dose will increase to 5mg once a week
  • if needed, your dose can be increased by 2.5mg each month
  • you can stay on a lower dose if you are happy with your treatment
  • the dosage of Mounjaro for weight loss will follow the same schedule

Aside from 2.5mg and 5mg, you can also get Mounjaro pens with dosages of 7.5mg, 10mg, 12.5mg and 15mg of tirzepatide. The maximum weekly dose is one 15mg Mounjaro injection.

Your Mounjaro dosage will be steadily increased over 4-week intervals. You’ll only need to increase your dose if a lower dose isn’t enough to manage your weight. Never increase your Mounjaro dose without your doctor’s permission.

Mounjaro warnings and risks

As Mounjaro can cause vomiting and diarrhoea, it can lead to dehydration if you don’t get enough fluids. Make sure to drink plenty of water while taking Mounjaro and speak to your doctor if these side effects become severe. They may tell you to stop using Mounjaro or lower your dose.

Mounjaro can affect how well the contraceptive pill works. If you’re taking an oral contraceptive, such as the combined contraceptive pill or mini pill, you should:

  • use another method of contraception (like condoms) or switch to a non-oral contraceptive for 4 weeks after starting the Mounjaro pen
  • do the same for 4 weeks after each Mounjaro dose increase

Mounjaro interactions

Mounjaro weight loss injections can lower your blood sugar levels too much if taken in combination with sulfonylurea or insulin (other diabetes treatments). Tell your doctor if you’re taking any of these medications, as they may need to adjust your dose.

You shouldn’t take Mounjaro alongside other weight loss injections, such as Saxenda or Wegovy. This could increase the risk of serious health risks and side effects.

For information on any other interactions with medications, including non-prescription and herbal remedies, speak to your doctor or check the patient information leaflet.

Frequently asked questions

How long does Mounjaro stay in your system?

Mounjaro has a half-life of 5 days. This is how long it takes for half the dose of tirzepatide to leave your system. After your last dose of Mounjaro, it should take around 25 days for all traces of it to leave your system.

Is Mounjaro a GLP-1 agonist?

Yes, Mounjaro is a GLP-1 receptor agonist, which means it acts like the hormone GLP-1 in your body. This is similar to other weight loss medications like Saxenda and Wegovy. However, unlike Saxenda and Wegovy, Mounjaro is also a GIP receptor agonist.

Is there a cheaper alternative to Mounjaro?

Cheaper alternatives to Mounjaro may include:

How long does it take for Mounjaro to work?

Mounjaro starts reducing your appetite straight away, but it may take a few weeks to feel the full effect.

Although it can quickly reduce your appetite, it may be some time before you see noticeable weight loss. Weight loss takes time and depends on you sticking to your diet and exercise plan.

Can I take Mounjaro when I am pregnant or breastfeeding?

No, Mounjaro isn’t safe for pregnancy or breastfeeding. There hasn’t been enough research into how this could affect the baby. If you are pregnant or breastfeeding and want weight loss treatment, talk to your GP.

How do I calculate my BMI?

Your body mass index (BMI) is a way to check your health based on your weight and height, and can let you know if you are underweight, healthy, or overweight. The way to calculate your BMI is your weight in kg divided by the square of your height in metres, or BMI = weight(kg)/height(m)2

If you know your weight and height, you can quickly and easily calculate your BMI with our BMI weight loss calculator.

Success Stories From Our Patients
fiona

Fiona, Newcastle

“It feels good to look in the mirror...”

... and I feel much happier than before. Everything – so life in general – feels better.”

neil

Neil, H., Scotland

“I use the phrase genuinely life changing...”

... I feel normal again and not embarrassed about my size.”

a. p.

A. P., London

“At my heaviest, I simply didn't recognise myself...”

... Today, I feel like my old (youthful) self.

anna

Anna, Scotland

“I have regained so much more stamina and energy...”

“... since I started taking the medication - the entire experience is definitely worth it!”

Medically reviewed by

dr-zoe-miller.png Dr Zoe Miller

After completing her first degree, she went on to study graduate-entry medicine at Warwick University. After graduating as a doctor, she worked within the West Midlands in Urology, Respiratory Medicine, Infectious Disease, and Psychiatry before transitioning into a full-time medical communications role.

Last reviewed: 25 Sep 2024

Sources

Drugs.com (2023). Mounjaro for Weight Loss (Obesity/Overweight) User Reviews: https://www.drugs.com/comments/tirzepatide/mounjaro-for-obesity.html [accessed September 2024].

EMC (2024). Mounjaro KwikPen 2.5/5/7.5/10/12.5/15 mg solution for injection in pre-filled pen:https://www.medicines.org.uk/emc/files/pil.15481.pdf [accessed September 2024].

Gov.uk (2023). MHRA authorises diabetes drug Mounjaro (tirzepatide) for weight management and weight loss: https://www.gov.uk/government/news/mhra-authorises-diabetes-drug-mounjaro-tirzepatide-for-weight-management-and-weight-loss [accessed September 2024].

Mounjaro (2023). How to use Mounjaro: https://www.mounjaro.com/how-to-use-mounjaro#how-to-use [accessed September 2024].

EMC (2024). Mounjaro KwikPen 2.5/5/7.5/10/12.5/15 mg solution for injection in pre-filled pen – Instructions for use: https://www.medicines.org.uk/emc/files/usermanual.15482.pdf [accessed September 2024].

NHS (2023). Obesity: https://www.nhs.uk/conditions/obesity/treatment/ [accessed September 2024].

NICE (2023). Tirzepatide for treating type 2 diabetes: https://www.nice.org.uk/guidance/TA924 [accessed September 2024].

The New England Journal of Medicine (2022). Tirzepatide Once Weekly for the Treatment of Obesity: https://www.nejm.org/doi/full/10.1056/NEJMoa2206038 [accessed September 2024].

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