Why There Is No Simple Conversion Chart
It is natural to search for a conversion chart when switching GLP-1 medicines — the idea that 1 mg of semaglutide equals a specific dose of tirzepatide is an appealing shortcut. In practice, no such equivalence table exists in clinical guidance, and for good reason.
Different mechanisms, different dose scales
Ozempic and Wegovy both contain semaglutide, a GLP-1 receptor agonist, and are available in doses up to 2.4 mg (for Wegovy) or 2 mg (for Ozempic). Mounjaro contains tirzepatide, a dual GIP and GLP-1 receptor agonist, with dose strengths ranging from 2.5 mg up to 15 mg. The numbers look very different on paper, but the milligram figures are not comparable across these two distinct drug classes — a higher milligram number on Mounjaro does not mean a higher "equivalent" effect to a lower milligram of semaglutide.
Rybelsus to Wegovy
Rybelsus is an oral tablet form of semaglutide, while Wegovy is a once-weekly injectable. Even though both contain semaglutide, oral and injectable forms have different bioavailability profiles, and switching between them is managed by a prescriber who can review your history and current dose before recommending a starting point on the new medicine.
Titration always restarts under prescriber guidance
Whether the switch is from Ozempic to Mounjaro, Mounjaro to Wegovy, or any other combination, clinical practice typically involves starting the new medicine at a low introductory dose and titrating upward — rather than jumping straight to a "matching" dose. Your prescriber will decide where to begin based on your individual circumstances, how long you have been on the previous medicine, and how you have responded to it.
For a closer look at how dose stages compare between specific medicines, see the guides on Mounjaro dose and conversion context and switching from Mounjaro to Wegovy. If you are considering the reverse direction, the page on Wegovy to Mounjaro conversion covers that transition in more detail.
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How Tracking Your Journey Supports a Medicine Switch
When you move from one GLP-1 medicine to another, the most useful thing you can bring to your prescriber appointment is a clear, accurate record of your experience on the previous medicine — doses logged, side effects noted, weight trends, and how your appetite and energy changed over time.
This is where GLP Trackr is most directly useful during a transition. The app's dose logging feature lets you record every injection — the date, dose strength, and which medicine — so your history is in one place rather than scattered across memory. When your prescriber is deciding where to start you on a new medicine, a complete log of your previous doses and how you responded is far more informative than a rough estimate.
Alongside dose logging, the side-effect tracker lets you note how you feel after each dose — nausea, fatigue, appetite changes, or any other symptoms — and view patterns over time. During a switch, this kind of record can help you and your prescriber spot whether early side effects on the new medicine are settling as expected or need attention. The doctor report feature pulls this data into a summary you can share at your next appointment, making that conversation more straightforward.
GLP Trackr supports both Mounjaro and Wegovy users, so whichever medicine you move to, you can continue logging in the same app without starting from scratch. For a broader overview of tracking your Mounjaro journey, the Mounjaro hub covers everything from injection logging to progress tracking.
Any decision about switching medicines, starting a new one, or adjusting your dose belongs with your prescriber or doctor — they have your full medical history and are best placed to guide the transition safely. If you experience anything severe, persistent, or worrying during or after a switch, contact your healthcare professional promptly.
Ready to keep a complete record through your next transition? Download GLP Trackr on the App Store or Google Play and explore it free for 7 days — your dose history and side-effect log will be ready for your next prescriber conversation.
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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.
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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.
Smart Meal Planning
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Recipe Library
Browse 50+ high-protein, GLP-1-friendly recipes filtered by meal type, prep time, and dietary needs. Every recipe includes full nutrition info, step-by-step instructions, and tips for eating with side effects.
Progress Analytics
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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Log walks, workouts, and movement with activity targets that flex with your energy levels. On lower-energy dose days, gentler targets keep you moving without burning out.
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Frequently asked questions.
No universally agreed conversion chart exists for switching from Ozempic (semaglutide) to Mounjaro (tirzepatide). The two medicines work differently and use different dose scales, so any switch is managed individually by your prescriber rather than through a fixed milligram-equivalent table.
There is no established milligram equivalence between Ozempic and Mounjaro because they are different drug classes. Your prescriber will decide a suitable starting dose for Mounjaro based on your individual history and response — this is not a decision to make from a chart.
Rybelsus (oral semaglutide) and Wegovy (injectable semaglutide) both contain the same active substance but are absorbed differently. A prescriber typically recommends a starting point on Wegovy based on your current Rybelsus dose and your individual circumstances, rather than a direct milligram conversion.
No. Switching between prescription-only medicines is a decision for your prescriber or doctor, who will review your dose history, how you have responded, and where to begin titration on the new medicine. Never stop or switch medication without professional guidance.
GLP Trackr lets you log every dose, date, and side effect across both medicines in one place. This gives your prescriber a clear record of your history on the previous medicine, which can inform decisions about starting doses and help monitor how you are responding to the new one.