Mounjaro® Injectable Pen
Effective GLP-1 weight loss treatment85,000+ service reviews
£179.99
for 1 pen (4 doses)
After answering some quick health questions, we’ll recommend suitable treatments for you.
Medical Director
*Based on results from a 72-week study of adults with obesity using Mounjaro (Individual results vary.)
Results that speak for themselves
I had tried every diet under the sun. I finally plucked up the courage… and it has changed my life. I am happier, more confident, full of energy and able to run around after my children for longer. [It] has drastically improved my physical, emotional and mental health.
Rosie G. lost 25kg after 6 months
Within a week, I noticed a huge difference. After a month, when I started to see changes in my body, that's when all the benefits really kicked in. I honestly would say it's been life-changing—and I've told other people the same. It's not a wonder drug, but it is a life-changing process.
Paul H. lost 35kg after 8 months
I can do more. I feel more energetic. I can play more with my kids, whereas before I was restricted. It's mostly the breathlessness, the being slow, being out of breath, feeling heavy, not being able to put my clothes on properly because they were too tight. It's been a brilliant experience with MedExpress.
Magdalena S. lost 22kg after 4 months
[It] has changed my life. I am finally eating to fuel my body. Emotional binge eating is no longer a part of my life. MedExpress has been a fantastic company to deal with and I can't recommend them enough. Thank you for helping me get my life back!”
Kirsten D. lost 23kg after 4 months
It's so easy and quick to take my injection [Mounjaro]. I've been overweight for my whole life — to be able to take that worry and stress away — you don't realise how much room it takes up. I've been able to sit down and create a schedule for myself, it's given me some space back.
Dorothy A. lost 15kg after 6 months
I used to hide away in oversized clothes, just trying to feel comfortable—but I had no confidence. Now, I'm fitting back into clothes I haven't worn in years, and I actually enjoy getting dressed in the morning. I feel happier, more confident, and like I'm finally showing up as myself.
Natasha T. lost 29kg after 4 months
The biggest thing it's taught me is about food noise. I didn't realise it was such an issue for me, but I really suffered badly with food noise. And the medication blocks it. I feel that it [Mounjaro] gives me that opportunity to pick better food, so my choices are better and healthier.
Leanne H. lost 25kg after 6 months
I was starting to get a pain in my knee which seems to have decreased a lot since losing the weight. I don't get any more back pain. It's made me a lot more confident within myself. I actually want to go out and do things. I want to go clothes shopping. I want to enjoy things with my kids.
Roisin S. lost 19.5kg after 3 months
It's making me more happy about myself. I'm feeling more confident. I'm not hiding. If my friend invites me for a coffee, I won't say no anymore. I'm dressing-up! I'm taking care of myself now. I feel more happy every day. I'm more talkative. I'm going to more family events.
Premila C. lost 23kg after 4 months
Up to 6× more effective than diet and exercise alone*
Video guides from our expert team
Mounjaro® information
We know changes like this can feel unexpected and can lead to frustration. But our priority is to help you continue your weight loss journey with minimal disruption and find the treatment that best supports your health goals and fits your lifestyle.
Find out more
Everyone’s journey with Mounjaro is unique. You’ll begin with a low starting dose (2.5 mg once a week) to help your body adjust comfortably. From there, your dose may increase gradually over time — but there’s no single “right” pace or target.
Our clinical team will check in with you regularly to see how you’re responding and feeling. Some people find they’re reaching their goals and tolerating treatment well at a lower dose, while others may benefit from stepping up. What matters most is finding the dose that works best for you — balancing comfort, results, and your personal health goals.
We’ll also review your progress to make sure Mounjaro is delivering meaningful results for you before continuing treatment.
In clinical studies, people using Mounjaro (tirzepatide 15mg) alongside healthy lifestyle changes lost an average of around 21% of their body weight over 72 weeks, and up to 25% in some cases.¹
Results vary for everyone, and progress looks different from person to person. Some people notice early changes in appetite or “food noise,” while others see results build gradually over time.
Our medical team focuses on what works for you. It’s all about helping you find a comfortable, sustainable approach that fits your body, your goals and your lifestyle.
¹ SURMOUNT-1, 72-week study of adults with obesity using Mounjaro (tirzepatide 15mg). Individual results vary.
- A sharps bin with your first order
- 4 needles (One to use for every time you inject)
- Swabs to clean your skin before injecting
- An instruction leaflet
- Extra tips to help you lose weight
You’ll begin on a low starting dose, taken once a week. From there, you can move up gradually or stay where you feel comfortable, and your clinician will review your choice and confirm it’s safe and sustainable for you.
Over time, some people choose to reduce their dose to maintain results or manage side effects.
Very common
- Examples: feeling sick (nausea), vomiting, diarrhoea, stomach pain, constipation.
Common
- Examples: dizziness, a reduction in blood pressure, indigestion, heartburn, bloating, burping, flatulence, fatigue, injection site reactions (redness, swelling), gallstones, allergic reaction (e.g, rash, itching, and eczema), low blood pressure, hair loss.
Uncommon
- Examples: Injection site pain, changed sense of taste, increased heart rate.
- SERIOUS: acute pancreatitis. This is inflammation of the pancreas that can cause severe stomach pain which can radiate to your back that doesn’t go away. Most patients feel very ill with pancreatitis and may present with severe vomiting (i.e., vomiting 3 times or more in one day, or having coffee ground or blood in the vomit). You should call 999 or attend A&E right away if you experience these symptoms.
- SERIOUS: acute gallbladder disease. This is inflammation of the gallbladder (also known as cholecystitis) that can cause a sudden sharp pain in the upper right side of your stomach that radiates towards your right shoulder. The affected area of the stomach will feel very tender and deep breathing can make the pain worse. You should call 999 or attend A&E right away if you experience these symptoms.
Rare
- SERIOUS: severe allergic reaction (anaphylaxis). This can present as difficulty breathing, swelling of lips, tongue and/or throat, difficulty swallowing, rapid heartbeat. You should call 999 or attend A&E right away if you experience these symptoms.
85,000+ verified customer reviews
“Mounjaro has changed my life”
Everything has been made so easy with MedExpress. I have just placed my fourth order and the whole process was quick and easy. Excellent delivery times and fantastic service. Thank you for the support and excellent service as always.
“I lost weight already in just 14 days”
Brilliant quick service. I ordered Mounjaro and I lost weight already in just 14 days so happy with the product. They actually respond to emails, Very helpful staff. Prices are very reasonable. would recommend this company highly. In fact I have already introduced 3 people to MedExpress.
“Being confidential is important to me”
MedExpress was a good experience. I needed help with my weight and it was nice to get advice for the different treatment I could use. Also the fact that it was confidential is very important. Having a lot of weight can be uncomfortable to talk front of stranger or even front of family. This is why I would recommend it.
“Won't be swapping to another!”
Amazing experience purchasing weightloss medication. Excellent packaging, highest standards. Sharps bin, swabs and needles included. Won't be swapping to another! Thanks team 💓
“The service is impeccable”
Ordering Mounjaro has been very straightforward and fast with a very competitive price also. I also am going away and had to get my next dose ahead of time and gave them a call. It was dealt with immediately. Cannot fault the company in any respect. The online account and the emails that you receive are very useful. Fantastic experience.
“Lost 19lbs in 4 weeks”
Great product, Mounjaro really works. I've lost 19 pounds in 4 weeks.
“Very professional and trustworthy”
My order of Mounjaro was delivered fast, price is also very competitive.
“Injection is easy to use”
I have tried all diets this one actually works by making you feel full. I would recommend it to anyone to shed some pounds.
“Very happy with the service”
I made my second order of Mounjaro on Wednesday morning. The same day my my prescription was approved and dispatched and it was out for delivery the following day.
“Seamless experience”
Their professionalism stood out as they ensured I was eligible for Mounjaro. The service was excellent, and I appreciated their attention to detail. Overall, I highly recommend MedExpress for their efficient and reliable service.
“My weight loss injection experience”
Great customer service nothing is too much trouble. UNBEATABLE PRICING - for the same branded products. Excellent aftercare. Continued communication throughout. Reminders of when medication is due to be reordered. One extremely happy patient/customer 10/10 recommend
“Feel and look so much better!”
The weekly injection is ideal. My appetite was suppresssed, and therefore allowed me to limit my food intake extensively. I'm now able to go it alone after 8 weeks.
“Best decision I ever made”
Starting this injection is the best decision I ever made. The company has supported me all the way through and been very helpful. I've struggled with weight loss for so long and now being on this injection my whole out look on food and my old food habits have gone. Thankyou so much MedExpress you've changed my life and made me want to be a better healthier person.
“I am very impressed”
So far so good... ordered 1st pen and received this within 48hrs. Came complete with everything even a sharps box.
“Honestly didn't feel a thing”
Can't wait to continue my weight loss journey with MedExpress. Not only am I losing weight, my confidence is increasing and I'm feeling great. When I received my order, it was very securely wrapped and chilled. The instructions for usage were very easy to follow. I was nervous about 'the needle' but honestly... didn't feel a thing.
Mounjaro® facts
GLP-1 + GIP injectable pen for weight management
2.5mg – 15mg
Around 21% of body weight after 72 weeks*
Tirzepatide
Up to 25% of body weight after 72 weeks*
*Based on results from clinical studies of adults with obesity using Mounjaro (tirzepatide 15mg) alongside lifestyle changes. Individual results vary.
How it works
1. Answer quick questions
No in-person appointments, just a quick online consultation. It only takes a few minutes to fill out a brief confidential medical history, all from the comfort of your home.
2. Choose a GLP-1 treatment
We’ll help you select a recommended injectable weight loss treatment that’s right for you — no existing prescription needed.
3. Get it delivered direct
Delivered direct to you using medical-grade refrigerated packaging. It’s also logo-free, so only you know what’s inside. After it arrives, get ongoing support from our team.
Mounjaro® FAQs
Backed by our experienced UK-based medical team
Dr Bryony Henderson
Dr. Bryony Henderson joins HeliosX as Medical Director for the UK and US, bringing extensive clinical operations, governance, and digital health experience from Kry/Livi and Numan. A recognised clinical voice, she has contributed to award-winning campaigns, published on health inequalities, and appeared across major national media. At HeliosX, she leads clinical governance and quality and supports the delivery of safe, innovative, scalable care.
Dr Adam Abbs
Adam is a doctor and advocate for increasing access to healthcare internationally. He has extensive experience in video consultations, technology-enabled examinations, remote biomarker testing, and education. He is a published author and has medical licenses in the UK, Spain and Republic of Ireland.
Dr Safia Hussain
Consultant GP and Quality Lead
MBBS, BSc, MRCGP, DRCOG, PGDip Clinical Dermatology
Safia is a GP with experience working in the NHS with a particular interest in diabetes and weight loss management. She is passionate about the power of digital healthcare and oversees our approach to patient safety and regulatory compliance.
Mounjaro® prices
Treatment begins with a low starting dose, which may be gradually increased every four weeks based on your progress.
| Dosage | Price |
|---|---|
| 2.5mg | £179.99 |
| 5mg | £189.99 |
| 7.5mg | £249.99 |
| 10mg | £279.99 |
| 12.5mg | £299.99 |
| 15mg | £309.99 |
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Authored by Dr Clare Morrison. Last reviewed 01 February 2025 by Liyya Patel and Siobhan Titre.