Mounjaro Weight Loss Injection

Price range: £149.99 through £899.97

Mounjaro is a weekly self–injectable pen used for weight loss. It contains tirzepatide which works by regulating blood sugar and energy balance levels, helping to reduce appetite and prevent cravings.

  • Comes with needles and swabs.
  • Clinically proven to help weight loss
  • Price match – cheapest price guaranteed
    (if ordered is approved before 2pm – please note, approval is pending a telephone consultation with a clinician as well as the online form)
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Type of medicine

Prescription injection for weight loss in adults with obesity or excess weight

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Active Ingredient

Tirzepatide – a dual-action GLP-1 and GIP receptor agonist

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Effective within

Results typically seen within 4 to 8 weeks with diet and exercise

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Works by

Reduces appetite, slows digestion, and improves blood sugar control

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Side effects

May cause nausea, tiredness, constipation, or diarrhoea

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Not Suitable For

Not for use in pregnancy or thyroid-related conditions

What is Mounjaro?

Mounjaro is a new injection used for weight loss and managing type 2 diabetes. It contains Tirzepatide, which helps reduce food cravings and makes you feel fuller. It’s given as a weekly injection pen and is prescribed for people who meet certain BMI criteria or have high blood sugar levels.

You should buy Mounjaro Weight Loss Injections along with a diet and exercise plan, whether you’re using it for weight loss or diabetes. It’s available only by prescription. In the US, it’s known as Zepbound, and in the UK, it was recently approved for weight loss on 8 November 2023, available through private prescription.

What Is Mounjaro Used For?

Doctors prescribe Mounjaro injections to help:

  • Control blood sugar in adults with type 2 diabetes when lifestyle changes alone don’t work
  • Manage weight in adults with a BMI of 30+, or 27+ with conditions like high cholesterol or sleep apnoea

Patients use it alongside a healthy diet and regular exercise to improve long-term health and overall wellbeing.

How Do Mounjaro Injections Work?

Mounjaro contains tirzepatide, which mimics the effects of two natural hormones—GLP-1 and GIP. These hormones help manage blood sugar and appetite. Mounjaro:

  • Triggers insulin release when blood sugar levels are high
  • Lowers sugar production by the liver
  • Slows digestion, helping you feel fuller for longer and curbing appetite

This dual action improves blood sugar control and supports long-term weight loss.

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Mounjaro Weight Loss Injections may cause serious side effects, including:

  • Pancreatitis (Inflammation of the pancreas): Stop using Mounjaro and contact your healthcare provider immediately if you experience severe pain in your stomach area that doesn’t go away, with or without vomiting. The pain may also spread to your back.
  • Low blood sugar (Hypoglycaemia): Your risk may increase if you use Mounjaro with medications like insulin or sulfonylureas. Signs include dizziness, sweating, confusion, drowsiness, blurred vision, slurred speech, shakiness, rapid heartbeat, mood changes, and hunger.
  • Serious allergic reactions: Stop using Mounjaro and seek urgent care if you experience swelling of the face, lips, tongue, or throat, difficulty breathing or swallowing, severe rash or itching, fainting, or a very rapid heartbeat.
  • Kidney problems (Kidney failure): If you have existing kidney issues, vomiting and diarrhoea may lead to dehydration, worsening your condition. Stay hydrated to reduce the risk.
  • Severe stomach problems: Some users report serious stomach issues. Inform your healthcare provider if symptoms are severe or persistent.
  • Vision changes: Report any vision changes while using Mounjaro to your healthcare provider.
  • Gallbladder problems: Symptoms may include pain in the upper abdomen, fever, jaundice (yellowing of the skin or eyes), or pale stools. Contact your doctor immediately if you notice these signs.

Common Side Effects

The most common side effects of Mounjaro include:

  • Nausea
  • Diarrhoea
  • Reduced appetite
  • Vomiting
  • Constipation
  • Indigestion
  • Abdominal pain

This is not a full list of side effects. Speak to your healthcare provider if any side effects bother you or do not go away.

How Should Mounjaro Be Stored?

To keep your injections safe and effective:

  • Store pens in the fridge between 2°C and 8°C
  • Can be kept at room temperature (up to 30°C) for a maximum of 21 days
  • Protect from light and never freeze
  • Keep out of sight and reach of children

Always check the expiry date before use.

Who Should Avoid Mounjaro?

Mounjaro weight loss injections may increase the risk of developing thyroid tumours, including thyroid cancer. Be aware of symptoms like a lump or swelling in your neck, a hoarse voice, difficulty swallowing, or shortness of breath. If you notice any of these signs, contact your healthcare provider right away.

Do not use Mounjaro if you or a family member have had a type of thyroid cancer called medullary thyroid carcinoma (MTC). Also, avoid it if you have Multiple Endocrine Neoplasia syndrome type 2 (MEN 2) or if you’re allergic to Mounjaro or any of its ingredients

To summarise, not everyone can take Mounjaro. Avoid this treatment if:

— Type 1 diabetes has been diagnosed
— Pregnancy or breastfeeding is expected
— You have serious digestive conditions like gastroparesis
— You have an allergy to tirzepatide or any ingredient listed
— You’re under 18

Always check with a healthcare professional before starting treatment.

We only stock Mounjaro in a multi-dose pen. This means each pen contains four doses of the same strength. Be sure to follow your doctor’s instructions and the patient information leaflet that comes with your pen.

You should only inject Mounjaro (Tirzepatide) into the skin of your stomach or upper thighs, avoiding veins and muscles. If your upper arms have enough fat, you can inject there, but it’s best to have someone help you.

Use a new needle for each injection. Have a sharps bin nearby so you can safely dispose of the needle after you’re done.

Always check your pen and needle for any damage, and don’t use them if they’re unsealed or bent. Also, inspect the liquid – if it’s not clear and colourless or slightly yellowish, you may need to use a new pen.

Before taking your dose, double-check that you have the correct medication and dose according to the Mounjaro dosing schedule. This is particularly important if you also take other injectable medications like insulin.

Ready to start your weight loss journey? Start a Consultation for Mounjaro Online UK.

Mounjaro Dosage Schedule

Mounjaro contains tirzepatide as its active ingredient. Tirzepatide is a dual-action GLP-1 and GIP receptor agonist that helps regulate blood sugar levels and appetite, supporting effective weight loss and type 2 diabetes management.

In addition to the active ingredient, Mounjaro includes the following inactive ingredients to help stabilise the solution and maintain safety and effectiveness:

  • Metacresol
  • Sodium chloride
  • Sodium phosphate
  • Hydrochloric acid and/or sodium hydroxide (to adjust pH)
  • Water for injections

Mounjaro does not contain preservatives, gluten, or lactose. If you have known allergies to any of these ingredients, please speak with your healthcare provider before starting treatment.

You may notice some changes to your appetite or digestion within the first week or two. However, it can take several weeks to see noticeable improvements in blood sugar levels or weight loss. Stick with it, and follow your diet and exercise plan for the best results.
Yes, but only if it's prescribed for weight management. Mounjaro is approved for adults with a BMI of 30 or more, or 27 or more with a weight-related condition. A healthcare professional will assess if it’s the right option for your needs.
If you miss a dose and it’s been less than 4 days (96 hours), take it as soon as possible. If more than 4 days have passed, skip the missed dose and take your next one on your usual day. Never take two doses at once.
No, Mounjaro works best when used alongside healthy lifestyle changes. Eating well and staying active will help maximise results and support your overall health.
Yes, if it continues to be effective and well-tolerated. Your doctor or nurse will monitor your progress and adjust the dose if needed. Don’t stop using it without speaking to a healthcare professional.

Inject Mounjaro subcutaneously (under the skin) in your stomach (abdomen), thigh, or upper arm. Use Mounjaro once a week, at any time of day.

For injecting Mounjaro

Stomach: Choose a spot at least 2 inches away from your belly button. Avoid the waistline and hip bones.

Thigh: Inject into the outer thigh. Do not use the inner thigh.

Back of the Upper Arm: Aim for 3 inches below the shoulder or above the elbow. This area is hard to reach when self-injecting, so it’s better if someone else gives you the injection.

Step-by-Step Guide

Check the Pen

  • Store unused pens in the fridge (2°C to 8°C). After use, they can be kept at room temperature (up to 30°C).
  • Ensure the pen is undamaged, the dose strength and medication name match your prescription, and the pen is not expired.
  • Check for cloudiness or particles. Air bubbles are normal. Do not use if there are any issues.

Wash Your Hands

  • Wash hands thoroughly with soap and water or use antibacterial hand sanitiser before injecting.

Choose Your Injection Site

  • Follow your doctor’s guidance on site selection (stomach or thigh).
  • For the back of the upper arm, seek assistance.
  • Rotate injection sites to avoid repetition.

Prepare the Pen

  • Wipe the inner red seal with a swab.
  • Use a new needle for each injection.
  • Remove the outer needle shield.

Prime the Pen

  • Turn the dose knob until you hear two clicks and '0' is displayed.
  • Tap the cartridge holder to remove air bubbles and release some medicine into the air.

Inject the Medicine

  • Turn the dose knob to '1', insert the needle into your skin, and push the dose knob until it stops.
  • Count to 5 slowly before removing the needle.

Remove the Needle

  • Ensure '0' is displayed before removing the needle.
  • If the full dose isn’t received, reinsert the needle without redialing the dose.

Dispose of the Needle

  • Replace the outer needle shield and unscrew the capped needle.
  • Dispose of the needle in a sharps container — never in household waste.
  • Each pen contains 4 doses and should be discarded after the final dose.

Mounjaro is generally considered more effective than Wegovy for weight loss. Clinical trails show that Mounjaro leads to an average weight loss of nearly 25% after one year, compared to Wegovy's average weight loss of around 16%.

In most cases, the side effects associated with Mounjaro may not last more than a few days. For example, nausea or diarrhoea may quickly go away after your body has gotten used to taking the medication. But some side effects may last longer, especially if they are serious. The slow digestion and reduced appetite caused by Mounjaro will continue for as long as you use the medication. Most digestive issues should improve within a month, but they might return temporarily when you increase your dose.
You can inject Mounjaro in three different areas: your abdomen, thigh, or upper arm. There isn't a single best site for the injection, so you can choose whichever location you find most comfortable. Some studies suggest that injecting into the abdomen might be less painful compared to the other sites.

Here are 3 Natural Alternatives to Mounjaro

1. Dietary Changes

  • High-Fibre Foods: Incorporate fruits, vegetables, whole grains, and legumes to improve satiety and support weight management.
  • Protein-Rich Foods: Include lean meats, fish, eggs, and plant-based proteins to help control hunger and preserve muscle mass.

2. Herbal Supplements

  • Green Tea Extract: May support weight loss and help boost metabolism.
  • Garcinia Cambogia: A tropical fruit extract that may reduce appetite and limit fat storage.
  • Glucomannan: A natural soluble fiber that promotes fullness and may support healthy weight loss.

3. Lifestyle Adjustments

  • Regular Exercise: Activities like walking, running, or strength training can help burn calories and improve insulin sensitivity.
  • Hydration: Drinking enough water supports weight management and overall health.
  • Mindful Eating: Eat slowly and listen to your body’s hunger and fullness cues to avoid overeating.
Yes, you can switch from Wegovy to Mounjaro for more efficient weight loss. You have to wait for 5 weeks after injecting the last dose of Wegovy. Consult with your healthcare provider before making the switch. Please keep in mind that you can not use both injections simultaneously.
Yes, our Mounjaro packaging includes swabs and needles. It is also mentioned in the ‘instructions leaflet’ to use swabs before injecting weight loss injections.
Yes, your GP can prescribe you Mounjaro for weight loss, but only under certain criteria under the NHS. You can also get a private prescription for Mounjaro from The Care Pharmacy - a UK-registered online pharmacy.