Mounjaro is a weekly injectable medication for weight loss that activates two key hormone receptors (GLP-1 and GIP) making it the first dual-acting treatment of its kind. It is currently prescribed off-label in Australia for obesity and metabolic health support.
Who is Mounjaro for?
Adults with BMI ≥30, or
Adults with BMI ≥27 with a weight-related condition (e.g. prediabetes, PCOS, insulin resistance)
How It Works
Reduces appetite and food cravings
Slows stomach emptying and promotes fullness
Enhances insulin sensitivity and regulates blood sugar
Targets GIP & GLP-1 pathways for enhanced effect over semaglutide (Wegovy/Ozempic)
Expected Weight Loss
Clinical studies show up to 22.5% total body weight loss
Dosing Schedule
Mounjaro (Tirzepatide) is titrated slowly to reduce side effects.
Everyone starts at the lowest dose (2.5mg) and are increased gradually.
Not everyone goes up to the next dose each month
Some people stay on the lowest dose for months before increasing!
Everybody responds to the medication differently.
The different doses are shown in the table below:
Month | Weekly Dose |
1 | 2.5 mg |
2 | 5.0 mg |
3 | 7.5 mg |
4 | 10 mg |
5 | 12.5 mg |
6+ | 15 mg (max dose) |
This table is a guide only - not all patients increase their dose every month.
Not all patients need the highest dose - your Rumen medical professional will guide you.
Common Side Effects
Nausea or vomiting
Diarrhoea or constipation
Decreased appetite
Headache
Tip: High-fat or greasy foods can worsen nausea—opt for small, protein-rich meals.
Important Safety Info
Avoid if you or your family have a history of medullary thyroid cancer
Not to be used in combination with other GLP-1 medications
Not suitable for Type 1 diabetes
Why Rumen + Mounjaro Works
Expert supervision from GPs, dietitians & health coaches
Structured support around food, movement & mindset
Early identification of side effects and dose optimization
Realistic planning for long-term success beyond medication
Let’s Talk
Rumen provides a supportive, medical pathway for effective weight loss using the latest tools—like Mounjaro.