Mounjaro (Tirzepatide)
Mounjaro is a once-weekly self-injectable treatment designed to support effective weight loss. Its active ingredient, tirzepatide, helps regulate blood sugar levels and improve energy balance.
Mounjaro works by activating the GLP-1 and GIP receptors, two key hormones that regulate appetite and satiety. This dual action helps reduce hunger, control cravings, and support sustainable weight management under medical supervision.
Clinical studies have shown that treatment with Mounjaro (tirzepatide) can lead to an average reduction of up to 22.5% in body weight when combined with lifestyle and dietary changes. It is regarded as one of the most effective evidence-based, medically supervised weight-loss treatments currently available in the UK, offering a promising option for patients seeking long-term, clinically supported results.
Mounjaro KwikPen Dosages and Prices
One Mounjaro pen contains four doses, so a pen lasts for 4 weeks.
In Stock Dosages
Mounjaro Injection Cost
2.5 mg (4 x doses of 2.5 mg)
£159.00
£189.00
£229.00
£229.00
£245.00
£245.00
Check if you're eligible
Mounjaro (tirzepatide) is privately prescribed at Weight Loss Pharmacy following an online medical assessment and clinician review. Simply complete our online consultation form. If you meet the eligibility criteria, you may proceed with placing an order for Mounjaro weight loss injection pens.
Achieve up to 22.5% weight loss with Mounjaro weight loss injection
Start your weight loss journey by completing a short consultation to see if Mounjaro is right for you. Get the prescription weight loss injection delivered discreetly to you.
Order Mounjaro weight loss injection online
Free online consultation
Start by completing our quick, free consultation form. Share your health details and background information so our prescribers can assess your suitability accurately.
Prescriber review and assessment
Every online consultation is carefully reviewed by a UK-licensed prescriber who ensures the treatment is safe and appropriate for you.
Confidential and discreet delivery
If you meet the eligibility criteria for Mounjaro weight loss pen, the prescription medication is dispensed to you by our UK-registered pharmacy via tracked courier service.
Ongoing monthly care
Access medication
Ongoing care and support
Lose up to 22.5% of your body weight in less than 18 months
Mounjaro (tirzepatide) is a clinically proven prescription weight loss treatment that can help you lose up to 22.5% of your body weight, depending on adherence to your prescribed plan.
This calculator is for illustrative purposes only. Results are estimates and may vary between individuals. They are based on clinical data showing up to 22.5% weight loss over 72 weeks with Mounjaro (tirzepatide) under medical supervision.
Get started with Mounjaro weight loss treatment today
Providing patients with safe, medically supervised access to clinically tested Mounjaro weight loss injections.
What is Mounjaro?
Mounjaro is a once-weekly prescription injection designed to help people lose their weight under medical supervision. Its active ingredient, tirzepatide, works on two key hormones in the body: GLP-1 and GIP, which naturally regulate hunger, digestion, and blood sugar levels.
Clinically tested in individuals living with obesity or excess weight, Mounjaro has been shown to support meaningful and sustainable weight loss, particularly when combined with healthy eating and regular exercise.
The treatment comes in a pre-filled injection pen, making it simple to use at home once a week. Like all prescription medications, it’s only available after a professional consultation with a licensed UK clinician, ensuring the treatment is safe for the patient’s needs.
According to NHS guidance, medications like Mounjaro work best when included in a structured weight loss plan, combining calorie-controlled nutrition and increased physical activity to achieve optimal, long-term results.
How does the Mounjaro weight loss injection work?
Mounjaro works by acting on two hormone pathways that communicate with the brain to signal fullness and manage how your body processes energy from food.
This dual-action approach helps you:
- Control hunger and curb cravings, making it easier to stick to a healthy eating plan
- Slow digestion, so you feel satisfied for longer between meals
- Enhance insulin sensitivity and maintain balanced blood sugar levels
- Achieve gradual, supervised weight loss under clinical guidance
It’s this double-action mechanism that sets Mounjaro apart from other treatments, like GLP-1-only medications, offering more comprehensive support for weight loss.
Mounjaro (tirzepatide) is an advanced injectable medication originally developed for the management of Type 2 diabetes. It works by mimicking the action of two naturally occurring incretin hormones, glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP), which play key roles in regulating blood sugar levels and appetite.
In individuals with Type 2 diabetes, Mounjaro improves glycaemic control by regulating insulin secretion from the pancreas in response to food intake and by reducing hepatic glucose production. Additionally, it helps increase insulin sensitivity, allowing the body to use glucose more effectively. This dual mechanism helps reduce elevated blood glucose levels and contributes to overall metabolic regulation.
Mounjaro has demonstrated substantial efficacy in weight management, even in individuals without diabetes. It does so by delaying gastric emptying and prolonging satiety, which leads to reduced caloric intake. The suppression of appetite, combined with improved insulin sensitivity and stable blood glucose levels, contributes to meaningful and sustained weight loss. As a result, Mounjaro is now recognised not only for its role in diabetes care but also as a clinically effective option for the treatment of obesity, when used under appropriate medical supervision.
Mounjaro clinical results
Clinical evidence highlights the effectiveness of Mounjaro (tirzepatide) for weight loss.
Studies, including the SURMOUNT-1 and SURPASS trials, have demonstrated that some participants achieved up to 22.5% body weight loss over 72 weeks.
Besides weight loss, Mounjaro has been shown to improve blood sugar levels, cholesterol, and support the reduction of waist circumference and visceral fat.
According to NICE guidelines, GLP-1 receptor agonists and dual-agonist treatments like Mounjaro are considered safe and clinically effective for adults living with obesity and related health conditions.
It’s important to note that results vary for each individual, depending on adherence to the prescribed treatment plan, diet, and lifestyle adjustments.
At Weight Loss Pharmacy, all treatments are delivered under expert clinical supervision, with ongoing monitoring to ensure safety and maximise outcomes.
Am I eligible for Mounjaro?
Mounjaro (tirzepatide) weight loss treatment is suitable for you if you meet the following eligibility criteria:
- You are 18 years or older
- You have a Body Mass Index (BMI) of 30 or higher, or
- You have a BMI of 27 or above along with a weight-related health condition, such as type 2 diabetes, high blood pressure, or elevated cholesterol
When you cannot use Mounjaro:
These are examples of situations where Mounjaro cannot be used:
- Pregnancy, trying to conceive, or breastfeeding.
- A personal or family history of medullary thyroid carcinoma (MTC) or MEN2.
- A known allergy to tirzepatide or any of the pen ingredients.
- An active eating disorder or unexplained weight loss.
You can order Mounjaro following an online consultation with one of our clinicians. If deemed clinically appropriate, your prescription will be reviewed and approved by our healthcare team, after which our pharmacy will dispense and deliver your treatment discreetly to your address.
At Weight Loss Pharmacy, every online consultation is carefully reviewed by UK-registered prescribers. The online medical consultation is required to ensure that Mounjaro is safe, appropriate, and clinically suitable before treatment is approved.
How do I use Mounjaro?
Mounjaro (Tirzepatide) is a subcutaneous injectable weight loss medication. It is used for weight management and the treatment of Type 2 diabetes. For better safety and effectiveness, it is important to follow correct administration, storage, and dosing protocols under the guidance of a healthcare provider.
Treatment with Mounjaro begins with an initial dose of 2.5 mg, administered once weekly on the same day each week. After the initial four weeks, and based on clinical assessment and tolerability, the dose may be increased to 5 mg per week. Further titrations may be recommended at four-week intervals, depending on individual response and side effect profile.
Each pre-filled injection pen contains four once-weekly doses, intended to last one month. It is is injected subcutaneously (under the skin. Recommended injection sites include the abdomen, front thigh, and upper arm.
It is advised to rotate injection sites each week, and avoid injecting into the same location repeatedly to reduce the risk of irritation. Never inject Mounjaro into muscle, vein, or damaged/inflamed skin.
What are Mounjaro treatment’s dietary requirements?
While Mounjaro (Tirzepatide) does not require a strict diet, following general nutritional guidelines can enhance treatment effectiveness, minimise side effects, and support overall health. Eating smaller, balanced meals throughout the day can help reduce nausea or digestive discomfort often associated with the treatment. It’s also important to maintain a steady intake of essential nutrients to support weight loss in a healthy and sustainable way.
A diet rich in lean protein helps preserve muscle mass during weight reduction. Recommended sources include chicken, fish, eggs, Greek yoghurt, and cottage cheese. Adding fibre-rich foods such as leafy greens, broccoli, whole grains, berries, and seeds supports digestion, prolongs satiety, and contributes to stable blood sugar levels. Adequate hydration, ideally 8 to 10 glasses of water per day, is also essential, especially to manage potential side effects like constipation.
Patients are encouraged to limit refined carbohydrates, added sugars, and high-fat or fried foods, as these can hinder metabolic progress and increase gastrointestinal discomfort. While Mounjaro assists in appetite regulation and blood sugar control, long-term results are best achieved when the treatment is paired with mindful eating habits and consistent lifestyle adjustments. Consulting a healthcare provider or dietitian can further personalise dietary guidance based on individual needs.
How long can Mounjaro be taken?
Mounjaro (Tirzepatide) is considered a long-term treatment option for weight management and Type 2 diabetes. There is no fixed or universal time limit for its use; rather, treatment duration is tailored to the individual’s health goals, progress, and clinical response. Most patients continue taking Mounjaro until they reach a healthy and sustainable weight, which may take several months or, in some cases, over a year.
The length of treatment depends on various factors, including the efficacy of the medication, presence or severity of side effects, and ongoing medical supervision. Some individuals may respond quickly to the medication, while others may require a longer course to see meaningful results. Regular follow-up with a healthcare provider is essential to monitor progress, adjust dosages if necessary, and ensure treatment remains safe and effective.
Clinical trials have shown promising long-term outcomes. In one study, patients who used Mounjaro consistently over a period of 72 weeks experienced an average 22.5% reduction in body weight. These findings support the use of Mounjaro as a sustained therapy when managed appropriately under medical guidance.
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Frequently Asked Questions
When to increase Mounjaro dose for weight loss?
Mounjaro doses are typically increased every four weeks, starting from an initial dose of 2.5 mg per week. Your healthcare provider may gradually increase the dose, in 2.5 mg intervals, depending on how your body responds, whether you’re tolerating the medication well, and the progress you’re making. Dose adjustments should only be made under medical supervision.
Where is the best place to inject Mounjaro for maximum weight loss?
How quickly does Mounjaro work for weight loss?
What dose of Mounjaro is best for weight loss?
The most effective dose varies by individual, depending on how well the treatment is tolerated and the patient’s health goals. While 15 mg per week is the highest approved dose, not everyone will need to reach this level to achieve results. The best dose for you is the one that provides effective weight loss with minimal side effects, as determined by your prescriber.
Can I switch from another weight loss injection to Mounjaro?
Switching from another weight loss medication, such as a GLP-1-only injection, to Mounjaro is possible but should always be done under the guidance of a licensed healthcare professional. The clinician will assess your current treatment, dosage, and health profile to determine the safest and most effective transition plan.
What happens if I miss a dose of Mounjaro?
Take it within 96 hours of the scheduled time. If more than 96 hours have passed, skip the missed dose and continue with your next injection on the regular schedule. Do not double up on doses.
Can Mounjaro be used long‑term to maintain weight loss?
Mounjaro is intended for ongoing weight management, but long-term use should be supervised by a healthcare provider. Clinical studies indicate that continuing treatment helps maintain weight loss, but sustainable results also rely on healthy eating, regular physical activity, and follow-up appointments.
References:
- https://www.nejm.org/doi/full/10.1056/NEJMoa2206038
- https://www.nhs.uk/medicines/weight-loss-medicines/
- https://www.medicines.org.uk/emc/product/15484/smpc
- https://www.nice.org.uk/guidance/ng246
- https://www.nhs.uk/conditions/obesity/
- https://www.cqc.org.uk
- https://www.pharmacyregulation.org
- https://pi.lilly.com/us/mounjaro-us-ifu.pdf
- https://www.nejm.org/doi/full/10.1056/NEJMoa2206038
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