Wegovy and Ozempic: Key Facts Side by Side
Despite sharing the same active substance, semaglutide, Wegovy and Ozempic differ in their licensed indications, available dose strengths, and the pen devices they come in. Here is a factual overview.
Active substance and mechanism
Both are GLP-1 receptor agonists. Semaglutide works on appetite-regulating pathways in the brain, promoting a sense of fullness and reducing appetite. Slower gastric emptying is also commonly reported. Because the mechanism is shared, many of the commonly reported side effects — including nausea, constipation, and indigestion — are similar across both medicines.
Licensed indication
- Wegovy (semaglutide 2.4 mg): licensed for chronic weight management in adults, used alongside a reduced-calorie diet and increased physical activity.
- Ozempic (semaglutide up to 2 mg): licensed for the management of type 2 diabetes in adults. It is not currently licensed as a weight-management medicine, though weight change is a commonly reported effect.
Dose strengths
Wegovy is typically started at a lower dose and titrated upward by the prescriber, with a maintenance dose of 2.4 mg. Ozempic has its own titration schedule with different maintenance doses. Both are once-weekly injectable medicines supplied in pre-filled pens. Any decisions about dosing and titration are made by your prescriber — not something to adjust independently.
Where does Mounjaro fit in?
If you have seen comparisons that include Mounjaro (tirzepatide), it is worth knowing that Mounjaro works differently: it is a dual GIP and GLP-1 receptor agonist, meaning it acts on two pathways rather than one. For a closer look at how those medicines compare, see our page on Mounjaro and Ozempic compared, or explore the broader Wegovy and Mounjaro comparison for more context across all three.
Both Wegovy and Ozempic carry a black triangle (▼) designation in some markets, meaning they are subject to additional monitoring. If you experience side effects, report them to your healthcare professional and your national reporting scheme (such as the UK's Yellow Card scheme).
average weekly weight change in the first 16 weeks of Mounjaro & Wegovy use*
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Whichever You Are On, GLP Trackr Supports Your Journey
GLP Trackr is built for people already taking either Wegovy or Ozempic (or Mounjaro). The app does not influence which medicine is right for you — that belongs with your prescriber — but once you are prescribed, it helps you stay consistent and make sense of your progress.
The most relevant feature for someone navigating a comparison like this is often side-effect tracking. Both semaglutide-based medicines share a similar side-effect profile, and logging how you feel over time — nausea, fatigue, digestive changes — lets you spot patterns and bring a clear picture to your next prescriber appointment. GLP Trackr's doctor report feature lets you export a summary of your logged journey, so your clinician has real data to work with.
Alongside that, dose logging keeps a record of every weekly injection — date, dose strength, and site — so nothing gets lost across a long treatment course. If you are curious how the cost side of the Wegovy versus Ozempic question plays out, our page on Wegovy and Ozempic cost differences covers that topic in more detail. You may also find it useful to read about how side effects compare between Wegovy and Mounjaro if your prescriber has discussed switching.
Any question about whether your current medicine is right for you, or whether switching makes sense, should be directed to your prescriber or doctor — they have the full picture of your health history. GLP Trackr helps you record your journey; it is not a substitute for that clinical guidance.
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Start every day with a 60-second wellness check-in. Log how you're feeling, track nausea, appetite, energy, and mood — giving you and your care team a complete picture of how your medication is working.
Injection Tracking
Log every dose with a single tap. Track your dose history, phase in your cycle, estimated medication levels, and upcoming injection dates — with reminders so you never miss a scheduled shot.
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Staying hydrated is especially important on GLP-1 medications. Set daily water targets, log intake throughout the day, and receive smart nudges when you're falling behind your goal.
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Beautiful, easy-to-read charts show your weight loss trajectory, weekly nutrition trends, medication responses, and wellbeing scores over time — turning raw data into genuine insights.
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Frequently asked questions.
Both contain semaglutide and work as GLP-1 receptor agonists, but Wegovy is licensed for weight management while Ozempic is licensed for type 2 diabetes. They have different dose ranges and pen devices, though the underlying mechanism is the same.
That decision belongs with your prescriber or doctor, who will consider your individual health history and licensed indications. Wegovy is specifically licensed for weight management; Ozempic is not. Neither is universally 'better' — suitability is personal and clinical.
Wegovy and Ozempic both contain semaglutide, a GLP-1 receptor agonist. Mounjaro (tirzepatide) is a dual GIP and GLP-1 receptor agonist, acting on two pathways. All three are prescription-only. Which is appropriate for you is a decision for your prescriber.
Any change to your prescribed medicine must be discussed with and directed by your prescriber or doctor. They will assess whether a switch is appropriate based on your diagnosis, health history, and treatment goals. Do not change medicines without clinical guidance.
Yes. GLP Trackr supports people on any GLP-1 medicine, including Wegovy and Ozempic. You can log doses, track side effects, monitor weight and progress, and generate a summary to share with your prescriber — whichever medicine you have been prescribed.