Overview
Mounjaro® treatment always begins at a starting dose of 2.5mg once weekly for the first 4 weeks. This initial phase is designed to help your body adjust to the medication (tirzepatide) and minimise common side effects like nausea, indigestion, or changes in bowel habits.
Use this article when you want to:
Understand the standard step-by-step Mounjaro® titration schedule
Find out why staying on the recommended dosing path is vital for safety
Learn how to provide evidence if you're switching to MedExpress at a higher Mounjaro® dose
Understand how MedExpress clinicians determine your Mounjaro® "maintenance" dose
What Is the Standard Mounjaro® Titration Schedule?
To ensure your body adapts safely, your Mounjaro® dose is typically increased every 4 weeks. Each strength should be taken for a full month before moving to the next level:
Weeks 1–4: 2.5mg once weekly (Starting Dose)
Weeks 5–8: 5mg once weekly
Weeks 9–12: 7.5mg once weekly
Weeks 13–16: 10mg once weekly
Weeks 17–20: 12.5mg once weekly
Week 21 onward: 15mg once weekly (Maximum Dose)
Important: you do not necessarily need to reach the 15mg dose. Many patients find that a mid-range Mounjaro® dose (such as 5mg or 10mg) provides effective weight loss with minimal side effects.
Why Must I Not Skip or Rush My Mounjaro® Doses?
It's clinically essential that you don't skip ahead or increase your Mounjaro® dose earlier than the 4-week mark. Bypassing this schedule can lead to:
Severe side effects: rapid increases often trigger intense nausea, vomiting, and dehydration.
Reduced tolerability: if the side effects become overwhelming, you're less likely to stay on the treatment long enough to see results.
Clinical risk: bypassing the body's adjustment period goes against safe prescribing guidelines.
How Does MedExpress Approve My Mounjaro® Dose?
Every Mounjaro® order is reviewed by a MedExpress prescriber to ensure the dose is safe for your current medical profile and weight-loss goals.
How Do I Find My Ideal Mounjaro® Maintenance Dose?
The "right" Mounjaro® dose is the lowest one that achieves three things:
Steady progress: you're losing roughly 0.5–1kg (1–2lb) per week.
Manageable side effects: any discomfort is mild and doesn't disrupt your daily routine.
Meaningful benefit: you're on track to lose at least 5% of your starting weight within the first 6 months of treatment.