Is Wegovy the Same as Ozempic — and How Do They Compare to Mounjaro?

The terms GLP-1 medicine, semaglutide, Ozempic, Wegovy, tirzepatide, and Mounjaro are often used interchangeably online — but they mean different things.

Wegovy and Ozempic: same substance, different licences

Both Wegovy and Ozempic contain semaglutide, a GLP-1 (glucagon-like peptide-1) receptor agonist. They work by acting on GLP-1 receptors involved in appetite regulation and blood-sugar control, and both are given as once-weekly injections. The key difference is that Ozempic is licensed primarily for type 2 diabetes management, while Wegovy is licensed specifically for chronic weight management, at a higher maintenance dose (up to 2.4 mg versus up to 1 mg for Ozempic). So while the active substance is identical, they are not interchangeable — your prescriber will have chosen the right licensed medicine and dose for your situation.

Mounjaro: a related but distinct medicine

Mounjaro contains tirzepatide, which is not the same as semaglutide. Where semaglutide acts on GLP-1 receptors alone, tirzepatide is a dual GIP and GLP-1 receptor agonist — it acts on both glucose-dependent insulinotropic polypeptide (GIP) and GLP-1 pathways simultaneously. This dual action is what makes tirzepatide a different class of medicine from semaglutide-based treatments. So if you are wondering whether Mounjaro is the same as Ozempic, the short answer is no — they share a family resemblance (both injectable, once-weekly, appetite-regulating) but have different active substances and mechanisms. You can explore the Mounjaro and Ozempic comparison in more detail on its own page.

What about Saxenda and Trulicity?

Saxenda (liraglutide) is also a GLP-1 receptor agonist but contains a different active substance from semaglutide and is given as a daily injection rather than weekly — so it is not the same as Wegovy, even though both act on GLP-1 receptors. Trulicity (dulaglutide) is yet another GLP-1 receptor agonist, licensed for type 2 diabetes, and is again a distinct medicine from both semaglutide and tirzepatide. These medicines belong to the same broader pharmacological family but are not identical or interchangeable.

Is 0.25 mg Wegovy the same as 2.5 mg Mounjaro?

No — these are starting doses of two different medicines with different active substances (semaglutide and tirzepatide respectively). The dose numbers cannot be compared directly because the molecules, dose scales, and clinical profiles differ entirely. Any question about which medicine or dose is right for you belongs with your prescriber or doctor.

For a fuller look at how tirzepatide works, the guide to how Mounjaro works covers the mechanism in plain language. If you are weighing up the two treatments, see how Wegovy and Mounjaro compare — keeping in mind that the right choice is always a clinical decision, not one to make alone.

GLP Trackr is built to support people already prescribed either Wegovy (semaglutide) or Mounjaro (tirzepatide) — whichever medicine your prescriber has chosen for you.

Because these medicines have different dose titration schedules and different dose strengths, dose and injection logging is the most practical place to start. GLP Trackr lets you record each injection — including the dose strength, date, and time — so you always have an accurate log of where you are in your treatment schedule. That record can be genuinely useful when you attend a prescriber appointment or want to discuss how your body has been responding.

Alongside dose logging, the app's side-effect tracker lets you note how you feel after each injection — whether that is nausea, fatigue, changes in appetite, or anything else — and review patterns over time. Rather than trying to recall weeks of experience from memory, you can show your prescriber a clear, timestamped log of what you have noticed.

GLP Trackr also supports weight and progress tracking, so the broader picture of your journey — not just individual doses — is captured in one place.

If you have questions about your dose, or whether your symptoms need attention, always follow the guidance of your prescriber or doctor — they know your full history and the medicine you have been prescribed. GLP Trackr helps you record and organise information to support those conversations; it is not a substitute for clinical advice.

Ready to keep track of your journey in one place? Download GLP Trackr on the App Store or Google Play and start a free 7-day trial — no matter which medicine you have been prescribed.