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Mounjaro Weight Loss Injections (Tirzepatide)


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Mounjaro (Tirzepatide) Pens

  • Weekly weight loss injection
  • Contains Tirzepatide
  • Newly licensed in the UK
  • Up to 15% weight loss in clinical trials
  • Starting Dose: 2.5mg – you must start on this dose if you have never used Mounjaro before.
  • Back orders now available on 12.5mg: Delivery: Mid May

Product Stock Status

Prescription & Medication 2.5mg (Starter Dose): In Stock£148.95
Prescription & Medication 5mg: In Stock£148.95
Prescription & Medication 7.5mg: In Stock£169.99
Prescription & Medication 10mg: In Stock£189.99
Prescription & Medication 12.5mg: In Stock£249.95
Prescription & Medication 15mg: Out of Stock£249.95
Prescription Only 2.5mg (Starter Dose): In Stock£69.99
Prescription Only 5mg: In Stock£69.99
Prescription Only 10mg: In Stock£69.99
Prescription Only 12.5mg: In Stock£69.99
Prescription Only 15mg: In Stock£69.99


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Buy Mounjaro Online from Click2Pharmacy

Simply fill in our quick and free online consultation form to buy Mounjaro online from Click2Pharmacy. Once our pharmacists have approved your prescription, we’ll send out your Mounjaro pens in discreet packaging directly to your door, so you can start your weight loss treatment as soon as possible.

You can also buy Mounjaro prescriptions from our online weight loss clinic, enabling you to take your prescription to a local pharmacy to purchase Mounjaro pens at an additional cost. Please note, if you choose “prescription only”, you will not receive Mounjaro weight loss pens from Click2Pharmacy, as this option is only for a prescription. If you want to buy Mounjaro pens online from Click2Pharmacy, ensure you select the “prescription & medication” option.

About Mounjaro (Tirzepatide)

Medication NameMounjaro Pen
Active IngredientTirzepatide
Medication formPre-filled Injection
Used to treatType 2 Diabetes
Weight Loss
Available dosagesPre-filled, single-dose pen delivers doses of 2.5mg, 5mg, 7.5mg, 10mg, 12.5mg or 15mg
Other names by which this medication is knownMounjaro Weight Loss Pen
Mounjaro Weight Loss Injection
Common side effects
Nausea, diarrhoea, vomiting, decreased appetite, indigestion, allergic reaction, constipation, stomach pain, tiredness, increased pulse, dizziness, feeling bloated, belching, gas and heartburn.
Who is this medication suitable forAdults over the age of 18 with:
– BMI over 30
– BMI over 27 with weight-related medical problems
Do you need a prescription for it?Yes
How should it be used?Use once a week on the same day each week
Patient Information LeafletMounjaro Patient Information Leaflet

What is Mounjaro?

Mounjaro is a new weight loss injection authorised for weight loss and management in the UK. Initially a type 2 diabetes treatment, it contains the active ingredient Tirzepatide. When taking Mounjaro for weight loss, patients use one Mounjaro pen per week for their treatment and must follow a diet and exercise plan for best results.

Mounjaro Dosage Options

Mounjaro pens come in different dose options, so you and your healthcare provider can find the best dose to suit your treatment. 

New patients start on 2.5mg and move up to 5mg after 4 weeks. Once you have settled on 5mg, we will work with you to decide if you need to increase to a higher dose of 7.5mg, 10mg, 12.5mg or 15mg. Each time your dose increases, you need to remain on it for 4 weeks before increasing.

How do Mounjaro weight loss injections work?

Mounjaro weight loss injections contain the active ingredient Tirezepatide, which imitates two hormones: glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP). These hormones slow digestion, so food takes longer to pass through your digestive system. They also reduce your appetite, so you feel fuller for longer and eat less.

How effective is Mounjaro for weight loss?

Clinical studies have shown that Mounjaro can lead to a 15% weight loss in patients after 9 months of taking Mounjaro for weight loss.

When announcing the authorisation of Mounjaro pens for weight loss management in the UK, the MHRA shared clinical trial results over 16 months showing up to 20% weight loss in patients taking Tirzapatide.

How to use Mounjaro weight loss injections

Mounjaro weight loss injections should be injected under the skin of your stomach, upper leg or upper arm. 

  • Prepare by cleaning the injection site using an alcohol swab or soap and water.
  • When ready, pull off the base cap.
  • Place the base of the Mounjaro pen flat on your skin and twist to unlock it.
  • Press and hold the button at the top of the pen for up to 10 seconds.
  • When you hear the first click, the injection has started.
  • The second click means the injection is complete.
  • After use, dispose of the pen immediately in a sharps box.
  • Use a gauze pad or cotton wool if needed and apply pressure to stop bleeding.

You can use the same area of your body every time you Mounjaro pens, but choose a different spot for the injection site.

Who can take Mounjaro for weight loss?

Mounjaro weight loss injections are suitable for individuals with a: 

  • Body mass index (BMI) over 30
  • BMI over 27 who have also been diagnosed with weight-related medical problems, including type 2 diabetes, high cholesterol, obstructive sleep apnea and high blood pressure.

What are the side effects of Mounjaro?

Like any other medication, you may experience side effects from taking Mounjaro, and everyone’s experience differs. If you are concerned about any side effects of Mounjaro weight loss injections, speak to your pharmacist or GP before starting treatment.

Common Mounjaro Side Effects

  • Nausea
  • Diarrhoea
  • Decreased appetite
  • Vomiting
  • Constipation
  • Indigestion
  • Stomach pain
  • Allergic reaction (rash, itching or eczema)
  • Stomach bloating
  • Acid reflux or heartburn
  • Feeling tired
  • Increased pulse

Mild stomach issues from taking Mounjaro usually improve in time. If you experience nausea, individuals have found the following has helped:

  • Eat smaller meals, such as splitting 3 daily meals into 4 or more
  • Avoid foods high in fat
  • Eat bland foods, such as toast, rice or crackers
  • Ensure you stop eating when you feel full

If nausea continues after following these guidelines, speak to your doctor or pharmacist.

Uncommon Mounjaro Side Effects

  • Low blood sugar (hypoglycaemia)
  • Gallstones
  • Injection site pain

Serious Mounjaro Side Effects

  • Inflammation of the pancreas (pancreatitis)
  • Low blood sugar (hypoglycaemia)
  • Serious allergic reactions
  • Kidney failure
  • Severe stomach problems
  • Vision changes
  • Gallbladder problems

If you have a kidney-related health condition and experience diarrhoea, nausea or vomiting after using Mounjaro, ensure you increase your fluid intake to reduce the risk of dehydration and contact your GP, pharmacist or an out-of-hours doctor.

These are not all the possible side effects of Mounjaro. You should review the Patient Information Leaflet before starting the treatment so you are familiar with all potential side effects.

Reporting Side Effects

If you experience any side effects, even if they aren’t included in the patient information leaflet, report them to your doctor, pharmacist or nurse. You can also report side effects directly via the Yellow Card Scheme.

Important Information

  • If you are taking the contraceptive pill, you will need to use another barrier method while using Mounjaro pens.
  • Keep Mounjaro pens and disposal containers out of sight and reach of children.
  • Do not use after expiry date
  • Do not use Mounjaro pens if you notice it is damaged or the medicine is cloudy, discoloured or has particles in it.
  • Do not dispose of Mounjaro pens with normal household waste.

Mounjaro for Weight Loss

A view from our expert
Picture Of Sakib Mohammed

Sakib Mohammed

Advanced Pharmacist Prescriber

“Mounjaro is an effective treatment for weight loss, primarily by slowing digestion and reducing appetite. It works by mimicking certain hormones that signal fullness to the brain, leading to significant weight loss, particularly when combined with a healthy diet and regular exercise. When considering Mounjaro for weight loss, it is important to discuss its suitability with your GP or pharmacist to ensure it fits your health needs."

Mounjaro FAQs

In studies carried out by Eli Lilly, the manufacturer of Mounjaro pens, most instances of most nausea, vomiting and diarrhoea occurred when increasing the dose of Mounjaro. Once patients settled on the new dose, these side effects decreased over time.

Mounjaro pens should be kept in the fridge at a temperature between 2°C to 8°C. You should store them in their original packaging to protect the pens from direct light exposure.

Mounjaro pens are not suitable for freezing. If you store them towards the back of your fridge, check to make sure they are not frozen before using them.

You can keep Mounjaro at room temperature for up to 21 days, providing the temperature does not go any higher than 30°C. After 21 days, you need to dispose of any pens kept at room temperature.

You should dispose of Mounjaro pens in a sharps disposal container immediately after use. 

As Mounjaro is a weight loss injection, you need to ensure you dispose of the pens safely. Do not throw them in your normal household or recycling bin. 

Mounjaro pens come with an expiry date on the pen and box. You must not use them after this date has passed.

You can take Mounjaro at any time of day.

Mounjaro weight loss injections are intended to be used once per week. You should choose a day of the week where it will easily fit into your schedule. If you need to change the day of the week, make sure it has been at least 72 hours since you used your last Mounjaro pen.

If you miss a dose of Mounjaro, take the missed dose as soon as possible. If more than 4 days (36 hours) have passed since your last dose, skip the missed dose and take your next dose on schedule. 

You should not use two Mounjaro pens within 3 days of each other. 

It is not recommended to take any weight loss medication during pregnancy or when breastfeeding because it’s unknown if Mounjaro will harm your unborn baby or pass into your breast milk.

Customer Reviews

Based on 68 reviews
Ibrahim Ahsan
Ibrahim Ahsan
Very helpful staff, never had any issues with this pharmacy, 100% recommend
Julie Beardsley
Julie Beardsley
Very professional service. Just like having your very own pharmacist. Brilliant
Mohammed Khan
Mohammed Khan
Just had private bloods taken short wait time very thorough good price nice lady would recommend.
Sarah Smithies
Sarah Smithies
It is great to have somewhere local that does blood testing. The staff are lovely, helpful and experienced. They fit me in last minute. There is never a wait and the results back within a day or two.
After refusal of doctors appointment same old same old ring back etc. I was invited at 5.25 to see doctor I drove over immediately. Everything fully explained and checked over I was leaving by 6pm with penicillin for strep throat. Had I followed my doctors receptionist I would probably have suffered longer and increased the chances of a worse infection.I Great efficient service.
Lisa Lowther
Lisa Lowther
Fantastic service went for blood done very fast very friendly fantastic customer service

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Mounjaro Weight Loss Injections


We are regulated by the General Pharmaceutical Council

Mounjaro Weight Loss Injections


We offer a variety of delivery options including Next day delivery. Spend over £70 for FREE delivery.

Mounjaro Weight Loss Injections


Our pharmacy, clinic & prescribers are based in Greater Manchester.

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