- See how Mounjaro is changing lives with real transformations here!
- 2-pack and 3-pack bundle options available in multiple dosage strengths; for more information and pricing, please click here
- Each pen contains 4 doses, enough for 1 month's supply
- Injected once per week, at any time of the day
- Contains the active ingredient tirzepatide
- Treatment length varies per individual
- Always read the patient information leaflet before use




Buy Mounjaro Weight Loss Bundles UK
Our Mounjaro bundles provide a flexible, cost-effective way to manage your weight loss treatment. Unlike standard Mounjaro packs, Mounjaro bundles offer multiple pens in one purchase, making it easier to stay on track with your treatment, save money, and reduce the need for frequent consultations. Each bundle includes different strength combinations, as detailed below.
Start your Mounjaro bundles consultation
Mounjaro bundle directions
Always use the pens in your Mounjaro bundle exactly as described in the patient information leaflet or as advised by your doctor or Chemist4U pharmacist. For detailed instructions on how to use the pens in your bundle, including the disposal of empty pens and needles, read our ‘How to take Mounjaro’ guide.
Halving Mounjaro doses
Some people try to stretch their Mounjaro bundle by halving doses to make their pens last longer. We don’t recommend this or provide guidance on it. Mounjaro has set doses for a reason, and splitting them into smaller doses may reduce effectiveness, increase the risk of inaccurate dosing or expired medication use, and cause treatment gaps that could delay or cancel your next order for safety reasons.
Mounjaro side effects
Like all medicines, Mounjaro may cause side effects in some people, though not everyone will experience them. Common side effects may include:
- Nausea & vomiting
- Stomach (abdominal) pain
- Diarrhoea & constipation
For more details on side effects, including potentially serious reactions, refer to the patient information leaflet or read our in-depth ‘Mounjaro side effects’ guide for tips on managing Mounjaro symptoms.
Since you'll be following a titration path—where your Mounjaro dose gradually increases each month—side effects typically won’t be more severe with a higher-strength bundle like the Mounjaro Surge bundle. Your body will have had time to adjust to the medication throughout your weight loss journey.
Mounjaro warnings
- Do not use Mounjaro if you are allergic to tirzepatide or any of the other listed ingredients.
- Mounjaro bundles are only suitable for adults aged 18 and over.
- Do not use Mounjaro if you are pregnant or breastfeeding; contraception is also recommended during treatment.
- Inform your prescriber if you’re taking any other medications.
Mounjaro bundles with food, drink & alcohol
Mounjaro can be taken with or without food. If you’re unsure about diet restrictions while using your pens, read our ‘Mounjaro diet’ guide, which also includes advice on alcohol consumption during your treatment.
How to store your Mounjaro pens
Store your Mounjaro pens in the fridge between 2°C and 8°C in their original packaging to protect them from light. Need storage tips for travel or after first use? Our ‘Storage safety for weight loss injections’ guide has everything you need to keep your Mounjaro pens safe and effective.