Step 2 of 6
Mounjaro 5mg (tirzepatide 5mg)
The first maintenance dose. Where most clinically meaningful weight loss begins, with a side-effect profile that the majority of patients tolerate well.
When Mounjaro 5mg is appropriate
Patients who have completed four weeks at 2.5mg without significant side effects. Some patients respond strongly at 5mg and remain on this dose long-term; others step up after a further four weeks if response and tolerability are favourable.
What to expect at 5mg
Appetite suppression typically becomes noticeable. Most patients see steady weight reduction over the following weeks. Gastrointestinal side effects (nausea, reflux, constipation) may return briefly after the step-up and usually settle within 7–10 days.
Dose decisions are made by your prescriber.
You cannot select a dose strength directly. Treatment always starts at 2.5 mg and escalates in 2.5 mg steps every four weeks at the earliest, based on how you respond and tolerate the medicine.
Side-effect profile at this dose
Mounjaro's side-effect profile is dose-dependent. Gastrointestinal effects (nausea, diarrhoea, vomiting, constipation, abdominal pain, reduced appetite) are most common during the first one to two weeks at any new dose and usually settle. Higher doses carry a higher risk of these effects. Serious effects — including acute pancreatitis, severe allergic reaction, and gallbladder problems — are uncommon but possible at every dose and require urgent medical advice.
See the full side-effect guide for detail.
Questions specific to 5mg
When is Mounjaro 5mg used?
Patients who have completed four weeks at 2.5mg without significant side effects. Some patients respond strongly at 5mg and remain on this dose long-term; others step up after a further four weeks if response and tolerability are favourable.
What should I expect on Mounjaro 5mg?
Appetite suppression typically becomes noticeable. Most patients see steady weight reduction over the following weeks. Gastrointestinal side effects (nausea, reflux, constipation) may return briefly after the step-up and usually settle within 7–10 days.
Can I start treatment directly on Mounjaro 5mg?
No. Treatment with tirzepatide always begins at 2.5mg for at least four weeks. Your prescriber escalates the dose in 2.5mg steps based on response and tolerability. 5mg is reached only after completing the earlier steps successfully.
Is Mounjaro 5mg the maximum dose?
No. The maximum licensed dose of Mounjaro is 15mg. 5mg sits at step 2 of six. Your prescriber will only escalate beyond 5mg if there is a clear continued clinical benefit and you are tolerating the medicine.