Why a Direct Dose Conversion Chart Does Not Exist
Wegovy (semaglutide) and Mounjaro (tirzepatide) work differently at a pharmacological level. Wegovy acts on GLP-1 receptors, while Mounjaro is a dual GIP and GLP-1 receptor agonist. Because their mechanisms, dose strengths, and titration schedules differ, doses cannot simply be mapped one-to-one.
How the dose ranges compare — factually
Wegovy is commonly prescribed across dose strengths of 0.25 mg, 0.5 mg, 1 mg, 1.7 mg, and 2.4 mg, with the maintenance target typically being 2.4 mg. Mounjaro dose strengths are typically 2.5 mg, 5 mg, 7.5 mg, 10 mg, 12.5 mg, and 15 mg. The numbers look very different because the medicines are measured differently and act differently — a 1.7 mg Wegovy dose, a 1 mg Wegovy dose, or a 2.4 mg Wegovy dose cannot be mapped to a corresponding Mounjaro figure without clinical assessment.
What actually happens when switching
When a prescriber moves someone from Wegovy to Mounjaro — whether due to a reported allergy to one medicine, a clinical preference, or another reason — they will typically start Mounjaro at a low introductory dose and titrate upward, rather than picking a number that mirrors the Wegovy dose being stopped. This is the standard clinical approach, and it is why the decision belongs entirely with your prescriber.
If you are searching for guidance on switching from Wegovy to Mounjaro, it is worth reading about what the process generally involves. You may also find it useful to explore whether changing from Wegovy to Mounjaro is something your prescriber can discuss with you, or review the general considerations around swapping from Wegovy to Mounjaro before your next appointment.
Any decision about your dose — including what dose to start Mounjaro at after stopping Wegovy — should always be made with your prescriber, never independently.
average weekly weight change in the first 16 weeks of Mounjaro & Wegovy use*
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How GLP Trackr Helps You Navigate a Medicine Switch
Switching medicines is one of the moments on a GLP-1 journey where accurate logging really matters. GLP Trackr's dose logging feature lets you record every injection — dose strength, date, and time — so you have a clear, timestamped history of your previous Wegovy doses and a clean record of each Mounjaro dose as you begin. That history can be genuinely useful to bring to your prescriber, especially when they are deciding how to start or adjust your new regimen.
The app's side-effect tracker is equally valuable during a switch. If you experience anything new or different after starting Mounjaro — nausea, fatigue, injection-site reactions, or anything else — you can log it in real time and spot patterns over days or weeks. Having a clear record makes it much easier to describe your experience accurately at your next appointment, rather than trying to recall it from memory.
You can explore everything the app covers on the Mounjaro tracking hub, which brings together guidance on dosing, side effects, food, and progress in one place.
If you notice any symptoms that feel severe, persistent, or worrying during or after a switch, contact your healthcare professional promptly — GLP Trackr helps you record what you are experiencing, but it is not a substitute for clinical advice.
Want a clear log of your journey from day one on your new medicine? GLP Trackr is free to try for 7 days — available on the App Store and Google Play.
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Morning Check-In
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.
Hydration Reminders
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
Personalized meal plans built around your current dose phase and side effects. Every meal is GLP-1 optimized — high in protein, gentle on the stomach, and scaled to your reduced appetite.
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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.
AI Meal Scanning
Snap a photo of any meal and get a full nutrition breakdown in seconds — calories, protein, carbs, fat, and fibre. No searching. No manual logging. Just point, snap, and track.
Exercise & Steps
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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Connect with thousands of others navigating the same medication journey. Share milestones, ask questions, find accountability partners, and get support from people who truly understand.
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Log your Mounjaro or Wegovy injection in seconds. Track your pen, your dose level, and your injection site — so you always know exactly where you are in your treatment.
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Frequently asked questions.
No universally agreed conversion chart exists. Wegovy (semaglutide) and Mounjaro (tirzepatide) have different mechanisms and dose ranges, so doses cannot be mapped directly. Your prescriber will determine the appropriate starting dose for Mounjaro based on your individual circumstances.
There is no clinical equivalent. A 1.7 mg Wegovy dose does not correspond to a specific Mounjaro dose. When switching medicines, prescribers typically start Mounjaro at an introductory dose and titrate from there, rather than matching a previous semaglutide figure.
A 2.4 mg Wegovy dose cannot be directly converted to a Mounjaro dose. These medicines work differently, and any switch should be managed by your prescriber, who will decide the right Mounjaro starting dose for you individually.
No — switching between prescription-only medicines is a decision for your prescriber or doctor. They will review your history, consider any reported reactions, and guide the transition safely. Never change or stop a prescribed medicine without speaking to your healthcare professional first.
GLP Trackr lets you log every dose — date, strength, and time — giving you a clear record of your Wegovy history and your new Mounjaro doses. You can also track side effects during the switch, creating useful notes to share with your prescriber at your next appointment.