What to know about Mounjaro.
Buy Mounjaro (Tirzepatide) Injection Ireland, Mounjaro (tirzepatide) is a prescription-only weight loss injection that helps reduce appetite and support long-term weight management. It’s used alongside a healthy diet and lifestyle to help people with obesity or weight-related health conditions lose weight safely. Mounjaro contains tirzepatide, a type of medication known as a dual-acting hormone receptor agonist. It targets two natural hormones involved in blood sugar control and appetite regulation to help you feel fuller for longer and reduce food cravings. When taken consistently, Mounjaro can help you make sustainable lifestyle changes and maintain weight loss over time.
Who manufactures Mounjaro?
Mounjaro is manufactured by Eli Lilly and Company, a global healthcare firm that develops diabetes and obesity treatments. Eli Lilly holds the licence for tirzepatide and supplies Mounjaro across the UK under regulation by the Medicines and Healthcare products Regulatory Agency (MHRA). All Mounjaro pens dispensed by myBMI are sourced through approved, regulated supply chains that meet strict quality and safety standards.
How does tirzepatide work?
Tirzepatide helps your body feel full for longer and keeps blood sugar levels steady. It copies the effects of two natural hormones that control appetite and digestion – GLP-1 and GIP. Together, they help you eat less and stay satisfied after meals. By calming hunger signals and helping your body use food more efficiently, Mounjaro supports steady, healthy weight loss when used alongside a balanced diet and regular activity. Buy Mounjaro (Tirzepatide) Injection Ireland
Important Info About Mounjaro
Is Mounjaro legal in Ireland?
Mounjaro is now available and can be prescribed by doctors in Ireland.
How do I get a prescription for Mounjaro in Ireland?
At myBMI, we offer a consultation with the possibility of a prescription if eligible.
Can I take Mounjaro if I’m not diabetic?
You have to be type 2 diabetic or have obesity and a BMI of over 27 to take Mounjaro. If you are obese but do not have diabetes, you can still take Mounjaro.
Why can’t you use Mounjaro after 30 days?
If the pen hasn’t been opened and is still sealed, it can be used up to the expiry date labelled on it as long as it has been refrigerated. If the pen is unopened and not refrigerated, it lasts 30 days. If you have opened the pen, the shelf life is 30 days; using the pen after 30 days is not recommended.
Can I use the leftover Mounjaro in the pen?
People call the leftover liquid in the Mounjaro pen the “fifth dose”. This method of treatment is not endorsed, studied, or regulated. By administering treatment in this way, you risk inaccurate dosing. It’s also worth noting that the leftover liquid inside the pen is a part of the pen’s design and not a usable dose. Buy Mounjaro (Tirzepatide) Injection Ireland
Should there be a bubble in my Mounjaro pen?
If you see small air bubbles in your Mounjaro pen, they won’t cause you any harm. This is because Mounjaro is an under-the-skin injection instead of an injection into the vein.
How long do you stay on Mounjaro?
You can stay on Mounjaro for as long as you’d like (if your provider or healthcare professional thinks it’s safe to do so). Mounjaro (Tirzepatide) Injection for sale Ireland
Can I stay on 2.5mg Mounjaro for weight loss?
The 2.5mg of Mounjaro is not licensed for maintenance. However, if you feel a benefit from this dose, you can discuss maintaining on 2.5mg with your prescriber. order Mounjaro (Tirzepatide) Injection Ireland
How long do Mounjaro side effects last?
Most Mounjaro side effects only last a few days. Once your body gets used to your current dose, they should start to fade. You may notice that they come back when you step up your dose, but they should fade again once you are used to that dose.
What happens when you stop taking Mounjaro?
The effects of the medication, such as appetite suppression and blood sugar regulation, will slowly wear off. If you have not made the necessary lifestyle changes, there is a potential for you to regain weight. If you have adopted a healthy lifestyle, the weight should stay off. You can read the full guide here.
Why do I feel cold while taking Mounjaro?
Mounjaro slows down your metabolism, which affects how your body regulates temperature. Also, when you lose weight, you lose some insulating body fat.
While this is not a guaranteed side effect, some people taking Mounjaro may experience a drop in body temperature or feel more sensitive to cold, particularly in their hands and feet.
Mounjaro® information
Eli Lilly, the manufacturer of Mounjaro, has increased the price of all dose strengths in the UK to align with prices across mainland Europe. This change means that in the UK, Wegovy is now a more cost-effective GLP-1 treatment option for weight management.
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.
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.
Mounjaro is a highly effective, prescription-only treatment for weight management. But, effectiveness isn’t just about speed or numbers on the scale.
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. Buy Mounjaro (Tirzepatide) Injection Ireland
When you order Mounjaro® for the first time, you’ll receive 1 pen that includes each of your 4 doses for your first 28 days of treatment. It’s important to store it in a refrigerator between 2-8°C. Mounjaro® comes in a single-dose pen that requires no mixing. You’ll also receive:
- 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
With each new order, you’ll receive your next pen at the right strength for you.
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.

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