What patients commonly report
Positives
- Dramatic appetite reduction: Many patients describe Mounjaro's appetite suppression as stronger than semaglutide (Wegovy/Ozempic). The dual GLP-1/GIP mechanism appears to produce more profound changes in hunger signalling. Patients commonly report "forgetting to eat" — a novel experience for people who have spent years thinking about food constantly.
- Faster weight loss: Patients who switched from semaglutide frequently report accelerated weight loss on Mounjaro. Clinical trials support this — ~21% average vs ~15-17% for Wegovy.
- Reduced cravings: Beyond just appetite, many report reduced cravings for specific foods — particularly sweet and fatty foods. Some describe losing interest in alcohol as well.
- Improved blood sugar: Particularly noted by patients with type 2 diabetes or pre-diabetes. Mounjaro's GIP pathway has additional glucose-lowering effects.
- Energy improvement: As weight comes off and blood sugar stabilises, many report feeling more energetic and sleeping better.
Common complaints
- GI side effects during escalation: Nausea, diarrhoea, and constipation are common in the first 4–8 weeks at each dose increase. Most patients report these improving within 1–2 weeks at each level.
- Cost: At $350–500/month with no PBS prospect, cost is the primary barrier. Many patients express frustration that such an effective medication is unaffordable for long-term use.
- Appetite can be too suppressed: Some patients report needing to force themselves to eat enough to maintain nutrition. This can lead to fatigue and nutrient deficiency if not managed.
- Injection site reactions: More commonly reported with Mounjaro than semaglutide — redness, itching, or small lumps at the injection site.
- Longer escalation: 20 weeks to reach maximum dose vs 16 for Wegovy means a longer ramp-up period.
Tips from experienced users
- Prioritise protein at every meal — when eating less, what you eat matters more
- Rotate injection sites to minimise skin reactions
- Stay hydrated — dehydration worsens every side effect
- Don't rush the escalation — staying at a lower dose longer can be more comfortable and still effective
- Track non-scale victories: measurements, energy levels, sleep quality, blood test results
Note: These observations are compiled from publicly available reviews on Australian forums, social media, and published patient-reported outcome data. Individual experiences vary significantly.