Mounjaro vs Wegovy: Which One Is Right for You?
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Mounjaro and Wegovy are both prescription weight-management medicines taken as a once-weekly injection. They work in a similar way, but they are not the same. Your practitioner decides which one, if either, suits you.
Our top pick
9.7/10our rating
Then from $417/month, the same as Lean and Prime. Australian-registered practitioners, Australian pharmacy, monthly billing.
Lowest first month of the 5 we compared
Free online assessment. An Australian-registered practitioner decides if it suits you.
Side-by-side comparison
| Mounjaro | Wegovy | |
|---|---|---|
| Active ingredient | Tirzepatide | Semaglutide |
| How it works | Acts on two appetite hormones (GIP and GLP-1) | Acts on one appetite hormone (GLP-1) |
| How you take it | Once-weekly injection pen | Once-weekly injection pen |
| Average weight loss in the main trial | About 21% at the highest dose over 72 weeks (SURMOUNT-1) | About 15% over 68 weeks (STEP 1) |
| Online price (first month) | From $197 (MyShape) | From $297 |
| Ongoing price | From $417/month | From $397/month |
Which is better?
In the main clinical trials, average weight loss was higher with Mounjaro. But the right medicine depends on your health, your other medicines, how you tolerate side effects and your budget. Both can cause nausea and other stomach side effects, especially when the dose goes up. Your practitioner will talk through these with you.
Can I choose which one I get?
You can tell the practitioner what you would prefer, but they make the final decision. Online providers like MyShape, Lean and Prime offer both.
Start for $197 instead of $317
Same $417/month as Lean and Prime after that, with an Australian-registered practitioner and an Australian pharmacy.
Check eligibility at MyShape$197 first month if prescribed. Free online assessment.