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Mounjaro

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What is Mounjaro?

weight-loss Mounjaro is a prescription weight loss treatment clinically proven to help patients manage their weight.

It is manufactured by Eli Lilly and was approved for treatment in Europe by the EMA in September 2022. It is available in 6 doses.

It contains Tirzepatide, a medicine that works by reducing your appetite and slowing down digestion - meaning you feel fuller for longer. When combined with a healthy diet and exercise regime, it helps you lose weight gradually.

Mounjaro can also be prescribed to help manage type 2 diabetes, as it helps to improve blood sugar levels.

You can order Mounjaro for weight management after an online medical consultation at euroClinix.

How does Mounjaro work?

Mounjaro contains the active ingredient Tirzepatide, which is a GIP and GLP-1 agonist.

  • Mounjaro binds to the GLP-1 and GIP receptors in the pancreas.
  • This stimulates the production of insulin and glucagon, hormones that play a vital role in your metabolism.
  • It also boosts energy use and your metabolic rate, which helps you burn more calories and improve your metabolism.
  • Doing so helps to control your blood sugar levels and reduce your appetite.
  • Mounjaro also delays the rate at which your stomach empties, which helps you feel fuller for longer.

These effects combined mean you consume fewer calories and gradually lose weight.

What are the benefits of Mounjaro?

Mounjaro is an effective weight loss treatment and has several unique benefits compared to other treatments.

  • Significant weight loss - a recent clinical trial found that patients on average lose an average of 50.3lbs (22.8kg) at 72 weeks on Mounjaro. This was significantly more compared to those on Wegovy, who lost 33.1lbs (15kg) on average
  • Once-weekly treatment - you only need to take it once a week, unlike other weight loss treatments that require daily injections.
  • Improves blood sugar levels - Mounjaro stimulates GIP receptors, which help to improve insulin sensitivity and enhance glucose use in the body. Studies show patients on Mounjaro see their blood sugar levels lower by over 2%*.
  • Sustainable and gradual weight loss - the treatment plan encourages you to build healthy habits with the aid of Mounjaro, so you can keep those habits once you finish treatment.
  • Flexible dosage - after 4 weeks, you can choose to increase the dose or stay on the same dose if you have certain side effects. You can also lower the dose at any time.

*A healthy blood sugar level (HbA1c level) is 6.5% or below.

How effective is Mounjaro for weight loss?

Mounjaro is a highly effective and clinically proven weight loss treatment.

Bar chart showing the results of Mounjaro vs a placebo drug.

One study monitored 2539 patients’ weight loss with Mounjaro. After 72 weeks, they found that:

  • 91% of patients on the 15 mg dose lost 5% or more of their original body weight.
  • 89% on 10 mg and 85% on 5 mg achieved similar results.
  • This was compared to 35% in the placebo group.
  • The average percentage weight loss was 21% on 15 mg, 19.5% on 10 mg and 15% on 5 mg.

Who can and cannot use Mounjaro?

To qualify for Mounjaro treatment, it’s essential that our doctors check if you are eligible to take it.

Who can use it

Mounjaro is suitable for people who have a certain body mass index and/or have been diagnosed with a weight-related condition.

You can calculate your BMI online or during the ordering process at euroClinix.

Mounjaro eligibility criteria
  • you have a BMI of 30 or above
  • you have a BMI of 27 or above and have a weight-related condition

Eligible weight-related conditions include:

  • prediabetes
  • type 2 diabetes
  • high blood pressure
  • heart disease (including high cholesterol, heart attack, stroke, coronary artery disease) 
  • obstructive sleep apnoea
  • PCOS (polycystic ovarian syndrome)
  • osteoarthritis or gout
  • chronic back pain
  • fatty liver disease
  • gallbladder disease

Mounjaro was initially prescribed for type 2 diabetes before it was approved for weight loss treatment. At euroClinix, it is only prescribed for weight loss.

Cautions

Mounjaro may not be suitable for those with certain health conditions, as they may be at an increased risk of side effects.

Consult your doctor if you:

  • have severe problems with food digestion or food remaining in your stomach for longer than normal
  • have ever had pancreatitis (inflammation of the pancreas)
  • have a problem with your eyes
  • are using insulin or another medicine for your diabetes

They will need to ensure the medicine is safe for you to take. Our consultation process at euroClinix also allows our doctors to determine whether Mounjaro is safe for you.

How do I use Mounjaro?

What does the pen look like?

Mounjaro comes as a pre-filled injection pen called a Mounjaro KwikPen. You must know what the components are so you can inject the medicine properly.

Image of the Mounjaro KwikPen parts

How do I prepare a dose?

Before injecting with a new pen for the first time, you should make sure the pen is working properly.

 Diagram showing pen cap being removed on Mounjaro pen.

Inspect the pen:

1. Pull the pen cap off and inspect the pen and label to ensure you have the right medicine and dose.

2. Check the pen for any signs of damage. If you find any, do not use the pen. Mounjaro fluid should be colourless to slightly yellow fluid.

showing person wiping a Mounjaro pen.

3. Wipe the inner seal with a swab.

4. Choose a new pen needle and pull off the paper tab.

Diagram showing how to attach the needle to Mounjaro pen.

5. Put the capped needle onto the pen and twist it on until it's secure.

6. Pull off the outer needle shield and keep it aside (it will be reused).

7. Then, pull off the inner needle shield and throw this away.

Diagram showing how to adjust dose on Mounjaro pen.

8. To prime the pen, turn the dose knob until you hear 2 clicks and the extended line is shown in the dose window.

9. This removes air from the cartridge and ensures it works correctly.

Diagram showing how to prepare the dose on Mounjaro pen for injection

10. Hold your pen with the needle facing upwards and gently tap the cartridge holder.

11. Release some medicine into the air by pushing the dose knob until it stops.

12. Then, slowly count to 5 while still holding it. The ‘0’ icon must appear in the dose window.

 Diagram showing where you can inject Mounjaro

How to inject Mounjaro pen

Choose your injection site:

  • You can inject this medicine into your stomach, thighs, or the back of your upper arms.
  • You can inject it yourself, or another person can help you do this.
Diagram showing how to inject Mounjaro

To inject Mounjaro:

  1. Turn the dose knob until a ‘1’ appears in the dose window.
  2. Insert the needle into your skin and push the dose knob until it stops, then slowly count to 5 while holding the dose knob.
  3. Before removing the needle, make sure the ‘0’ icon appears in the dose window.
  4. Pull the needle out of your skin.
Diagram showing remove the needle

Once you have injected:

  • Place the outer needle shield back onto the needle, then unscrew the capped needle and put it into a sharps container.
  • Put the pen cap back onto the pen and store it appropriately.

What dose do I take?

It’s important you follow the Mounjaro dosage instructions to get the most out of your treatment.

  • The starting dose of Mounjaro is 2.5 mg.
  • You inject that once weekly for 4 weeks.
  • Then, you may increase the dose to 5 mg or stay on the current dose if you are experiencing side effects.
 Image showing all 6 doses of Mounjaro

Mounjaro is available in 6 different doses: 2.5 mg, 5 mg, 7.5 mg, 10 mg, 12.5 mg and 15 mg. You increase the dose gradually until you reach the maximum maintenance dose (15 mg).

However, you can stay on your current dose or decrease it at any time if you experience side effects.

When do I take it?

You can inject Mounjaro any time of the day, with or without meals.

However, you should try to use Mounjaro on the same day each week if you can. You may wish to mark it in your calendar to remind you to take it each week.

If necessary, you may change the day of your weekly injection, as long as it has been at least 3 days since your last injection. Then, you should continue with your once-weekly injection on that day.

What should I do if I miss a dose?

If you miss a dose, the advice will depend on how long it has been since you were meant to take it.

What to do if you miss a dose of Mounjaro
It’s been 4 days or less since you should have used Mounjaro
  • Use Mounjaro as soon as you remember.
  • Inject your next dose at the regularly scheduled time.
It’s been more than 4 days since you should have used Mounjaro
  • Skip the dose you have missed.
  • Inject your next dose at the regularly scheduled time.

How long do I take it for?

You can use Mounjaro for as long as your doctor prescribes. However, you should aim to stop using it once you reach a healthy BMI.

How long does it take for Mounjaro to work?

How long it takes to experience the effects of Mounjaro varies from person to person.

  • Weight loss - Based on medical trials, most people should have lost up to 6% of their body weight after 2 months. After 18 months, you should have lost up to 21% of your original body weight.
  • Appetite changes - You should notice a change in your appetite in the first 2 weeks of using it. How quickly you feel it will depend on the person. It may take a few hours for some or days for others.
  • Side effects - You are most likely to experience side effects during the first 2 weeks and each time you increase your dose. Generally, common side effects should go away on their own after a few weeks. But, if they don’t, you should talk to your GP.

If you are not seeing any results or changes, it may be due to your lifestyle. It’s important you change your exercise or eating habits to get the most out of Mounjaro.

What lifestyle changes should I do while using Mounjaro?

Whilst using Mounjaro, you must live a healthy lifestyle to help you achieve your weight loss goals. It also means you create healthy lifelong habits that you can maintain once you finish treatment.

Weight loss is not just a short-term treatment plan, it’s an entire lifestyle change. Modifying your diet, exercising and boosting your wellness will help you lose weight and keep it off once you finish treatment,

Silvia Fonda Nutritionist

Lifestyle guide for Mounjaro users

Maintain a healthy weight Regular exercise

Adding a bit of exercise to your daily routine, like walking, cycling, or household chores, will help you lose weight and feel good. It will also improve your physical and mental health as you continue on your weight loss journey.

Eating healthy is important to ensure results and reduce side effectsHealthy diet

  • Eating healthy is important to ensure results and reduce side effects.
  • Try to eat smaller portions, you can do this by being mindful or by counting calories.
  • Prioritise nutritious foods like lean proteins, fruits and vegetables.
  • Cut down on unhealthy foods like fast food, alcohol and sweet treats.

Good sleep scheduleGood sleep schedule

Sleep is important for many of your body’s vital functions - including your weight! Studies show that poor sleep can affect your metabolism, making it harder to burn calories and leaving you feeling hungrier. Most people need between 7 and 9 hours a night.

Manage stressManage stress

Cortisol is a natural stress hormone that studies often link to weight gain. Finding time to unwind, relax and take care of yourself is essential for helping you reach your goals.

What are the Mounjaro side effects?

Like all prescription medicines side effects, Mounjaro may cause side effects.

Common side effects

Very common and common side effects occur in 1 -10 in every 100 people using this medicine. These may include:

  • constipation
  • diarrhoea
  • nausea
  • vomiting
  • dizziness
  • stomach discomfort
  • burping
  • hair loss
  • low blood pressure (hypotension)

These side effects should often go away on their own once your body gets used to the medicine.

Uncommon side effects

Uncommon side effects occur in less than 1-10 in every 100 people. These may include:

  • gallbladder problems
  • change in taste

Mounjaro may also cause acute pancreatitis, a condition which causes inflammation of the pancreas in a short period. This may cause symptoms such as:

  • persistent, severe stomach pain
  • suddenly feeling or being sick
  • a high temperature of 38°C or more

If you experience any signs of pancreatitis, speak to your GP as soon as possible. If pancreatitis is diagnosed, you should discontinue using Mounjaro.

Rare side effects

Rare side effects occur in less than 1-10 in every 1,000 people. Rare side effects include:

  • swelling (angioedema)
  • low blood sugar levels (hypoglycaemia)
  • an allergic reaction

For a full list of side effects, please refer to the patient information leaflet.

Consult your doctor if you experience any side effects that don’t go away, get worse or worry you.

How to manage side effects

The most common Mounjaro side effects affect your digestion, which can cause sickness, diarrhoea or constipation. There are some simple things you can do yourself to help with side effects.

Digestive side effects are common on Mounjaro and can be discouraging. But, reducing your portions, staying hydrated and eating bland foods are simple ways to feel better,

Dr. Caroline Fontana Lead Prescribing Doctor

How to manage Mounjaro side effects

Portion sizes Portion sizes

The medicine is designed to reduce your appetite, so eating larger portions can make you feel sick. So, it’s best to stick to eating little and often.

Eating healthy is important to ensure results and reduce side effectsEat certain foods

If you’re feeling nauseous, you should try to eat bland foods such as plain toast or crackers or foods with ginger in them. You should also try to eat foods that contain water to keep you hydrated like soup.

Stay hydratedStay hydrated

If you are sick or have diarrhoea, it’s essential you stay hydrated. Drink plenty of fluids or get rehydration salts from your local pharmacy.

Fresh airFresh air

Getting some fresh air can help alleviate nausea. Going on a short walk is not only good for exercise, but may help you feel a bit better if you’re struggling with side effects.

What interacts with Mounjaro?

Mounjaro may interact with other medicines you take. You should talk to your doctor if you take any other medications before using Mounjaro.

Mounjaro can affect the absorption of other medicines, such as:

  • warfarin (used to prevent blood clots)
  • digoxin (used to manage heart problems)

When taken with Mounjaro, these medicines for type 2 diabetes may increase the risk of hypoglycaemia (extremely low blood sugar levels):

  • insulin
  • metformin
  • sulphonylureas (e.g. gliclazide)
  • gliflozins (e.g. dapagliflozin)
  • gliptins (e.g. sitagliptin)
  • acarbose
  • repaglinide
  • pioglitazone

Mounjaro may also reduce the effectiveness of your oral contraception. This includes the combined pills and the mini-pill.

You should use a barrier contraceptive (condoms) as well as the pill, or switch to a non-oral contraceptive method (e.g. the patch or ring) while on Mounjaro.

What safety advice should I follow when using Mounjaro?


Category Status Advice
Alcohol Caution Alcohol can make you dehydrated and make some Mounjaro side effects worse. It is also high in calories and sugar and therefore should be consumed minimally during your weight loss journey.
Pregnancy Avoid Mounjaro is not safe to use during pregnancy. Do not use Mounjaro if you are pregnant.
Breastfeeding Caution Little is known about how Mounjaro passes into breast milk, but specialist sources advise caution.
Driving Caution Mounjaro is unlikely to affect your ability to drive unless you use it with other diabetes medicines. This is because you are at risk of hypoglycaemia, which can affect your concentration.
Hydration Important Staying hydrated while using Mounjaro will help relieve any side effects.

How should I store Mounjaro?

Storage instructions
  • Unused pens must be stored in the refrigerator in temperatures between 2 - 8°C. Do not freeze pens. If it has been frozen, do not use the pen.
  • Once used, you can store Mounjaro unrefrigerated in temperatures below 30°C for up to 30 days. After 30 days, discard the pen.

Caution: Do not use pens past the expiry date, which is stated on the pen label and on the carton after ‘EXP’.

How do I dispose of Mounjaro?

Storage instructions

The pen

the pen
  • Hand Mounjaro pens into your local pharmacy so they can dispose of it with medical waste.

The needles:

the needel
  • Dispose of the needles in a sharps bin.
  • Once your sharps bin is full, your local council will need to collect and dispose of it.

Important: Do not dispose of Mounjaro with household waste or down the toilet. This can be harmful for the environment.

When can I buy Mounjaro from euroClinix?

We are working hard to make Mounjaro available in $country$. However, unfortunately, it is currently not available. For now, please make sure to check out our other treatment options.

You can receive an online prescription from euroClinix.

Can I buy Mounjaro without a prescription?

No, Mounjaro is a prescription-only medication. You need a valid prescription from a healthcare professional to purchase it. This ensures the medication is safe and suitable for your needs.

How do I buy Mounjaro online from euroClinix?

Ordering Mounjaro online from euroClinix is convenient.

Follow these simple steps:

  • Complete a quick online consultation to check your eligibility.
  • UK-registered doctors review your responses to ensure the medication is right for you.
  • Upon approval, an e-prescription will be issued.
  • Enjoy free delivery from our licensed pharmacy with tracking details.

Your privacy is our top priority. euroClinix uses secure, encrypted transactions and complies with UK medical standards to keep your information confidential.

Start your online consultation today to enjoy professional care from the comfort of your home.

Why should I choose euroClinix?

euroClinix is trusted by thousands of UK users for its safe and convenient service. Here’s why:

  • Experienced doctors manage your consultations and prescriptions.
  • Online consultations, quick approvals, and discreet doorstep delivery add to the convenience.
  • A supportive team is on hand to answer treatment-related questions or concerns.
  • Patients can manage their prescriptions hassle-free through our secure platform.

Join thousands who trust euroClinix for their healthcare needs and take control of your health today.

How much is Mounjaro?

The price of Mounjaro at euroClinix includes everything you need:

  • Free online consultation with our experienced doctors
  • Free prescription, if approved
  • Free delivery straight to your door

Our pricing is transparent, with no hidden fees. Order today and benefit from our complete, all-inclusive service.

What are the alternatives to Mounjaro?

Mounjaro isn’t the only weight loss treatment available. At euroClinix, we have several options available that may or may not be more suitable for you.

Comparison of weight loss treatments
Choose what to compare:
Medication Active ingredient Form Dosage How it works Price from
Mounjaro Tirzepatide Injection One injection once weekly Reducing your appetite and slowing down how quickly your stomach empties. -
Wegovy Liraglutide Injection One injection once weekly Reducing your appetite and slowing down how quickly your stomach empties. -
Saxenda Liraglutide Injection One injection once daily Reducing your appetite and slowing down how quickly your stomach empties. -
Rybelsus Semaglutide Tablets One tablet once daily Reducing your appetite and slowing down how quickly your stomach empties. -
Orlistat (Xenical) Orlistat Capsules One capsule 3 times a day Prevents the absorption of fat from food in the intestines. -
Mysimba Naltrexone with bupropion Slow-release tablets One tablet once a day, gradually increased to 4 tablets a day over 4 weeks Targets brain activity responsible for appetite and energy use. -

Mounjaro injection pen FAQs

What is Mounjaro used for?
Is Mounjaro better than Wegovy for weight loss?
Why do you have to increase the Mounjaro dose?
Can you take two 2.5 mg Mounjaro to make 5 mg?
How long does a single Mounjaro pen last?
How long do Mounjaro side effects last?
Is Mounjaro safe?
Is it safe to buy Mounjaro online?
Will my order be confidential?
What are the delivery options available?

Note: You must complete a short online consultation so that our doctor can ensure that the treatment is suitable for you. The above pricing should only be used as a reference. The final decision to issue this treatment lies with the prescribing doctor.

Medically reviewed by Dr. Caroline Fontana Written by our editorial team Last reviewed 13-10-2024
Mounjaro injection pen information
Type of medicine GIP and GLP-1 agonist
Used for Weight loss
Active ingredient(s) Tirzepatide
Works by Reducing your appetite and slowing down how quickly your stomach empties.
Effective within 8 weeks
Available as Pre-filled injection pens containing 4 doses
Available dosage(s) 2.5mg, 5mg, 7.5mg, 10mg, 12.5mg, 15mg
Usage instructions Administer an injection once a week
Packaging Cardboard box containing one pre-filled injection pen
Manufacturer Eli Lilly and Company
Generic available No
Storage Unopened pens must be kept refrigerated between 2 and 8°C. Once opened, store in temperatures less than 30°C and use within 30 days
Prescription required? Yes, get it with our FREE online consultation
Who is suitable for an online consultation Adults with a BMI of 30 or above, or 27 and above diagnosed with a weight-related condition
Mounjaro injection pen reviews
Excellent 5 1 patients have reviewed Mounjaro injection pen on Trustpilot

Further reading

Understanding Saxenda Side Effects

Understanding Saxenda Side Effects

Reviewed by Dr. Caroline Fontana
Mysimba’s side effects and management

Mysimba’s side effects and management

Reviewed by Dr. Caroline Fontana
Understanding Wegovy side effects

Understanding Wegovy side effects

Reviewed by Dr. Caroline Fontana
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