
Now that your treatment is approved, we’ve created a handy guide to support you during your first few months. Don’t forget to store the medication in a fridge as soon as you receive it.
An overview of your first 4 weeks
You should take tirzeaptide (Mounjaro/Zepbound) once per week, on the same day each week, with or without food. We recommend keeping track of your injections and doses each week by recording them in your calendar.
Weeks 1-4:
Start at 2.5 mg and maintain that dose for the first 4 weeks. You will increase your dose in week 5.

View the full 12 week dosing schedule for tirzepatide.
Injection guide: week 1
Remove the pen cap from your KwikPen and attach a new pen needle. Then, after priming the pen, inject 2.5 mg once this week.
After each injection, remove the used pen needle and safely dispose of it in the sharps container. Then, replace the pen cap and store it back in the fridge.
How to use the medication
Injection tutorial video for the KwikPen
Watch this step-by-step video to learn how to use the KwikPen, or read these instructions.
How to store the medication
To remain stable and effective, the medication must remain between 2 to 8°C. You should store the medication in a fridge as soon as you receive it, and it should only be removed from the fridge just before administering your first injection.
Mounjaro should be stored in its original container to protect the medication from sunlight. Do not freeze the medication.
Where to inject tirzepatide
Inject into the lower stomach area, about 1-2 inches away from the navel. This is usually easiest and ensures the medication gets absorbed into your bloodstream quickly. Other good injection sites include upper legs (thighs) and upper arms.
You should choose a new injection site each week, leaving 1-2 inches between sites to avoid irritation.
Common tirzepatide side effects
Common side effects include nausea, vomiting, diarrhea, constipation, feeling tired, and acid reflux. These typically resolve within a couple of weeks.
If your side effects last longer or become moderate, frequent, or unmanageable, message your healthcare practitioner. If they become severe (e.g., significant or persistent abdominal pain), seek in-person care with a healthcare practitioner, or visit a walk-in clinic or the emergency department.
Introducing Felix’s sustainable weight management course

Module 1: Getting started
Access to our sustainable weight management course is included as part of your treatment.
This 10-module course will help you develop the tools and mindset to make lasting lifestyle choices.
The information provided in this guide is not meant to replace the medical guidance given to you by your healthcare practitioner. If this information conflicts with what your practitioner has told you, always follow their direction first.
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