How Mounjaro Prescribing Generally Works
Because Mounjaro is a prescription-only medicine, decisions about who receives it, at what dose, and for how long are made entirely by a qualified healthcare professional. Prescribers will typically review a person's medical history, current medications, and health goals before deciding whether Mounjaro is appropriate.
A prescriber-led, gradual process
Tirzepatide — the active substance in Mounjaro — is a dual GIP and GLP-1 receptor agonist delivered as a once-weekly injection. It is commonly started at a low dose (such as 2.5 mg) to allow the body to adjust, with increases made at intervals decided by the prescriber. The dose strengths commonly referenced are 2.5 mg, 5 mg, 7.5 mg, 10 mg, 12.5 mg, and 15 mg. Any change in dose is your prescriber's decision, not something to adjust independently.
Clinical guidelines shape the approach
Prescribers follow clinical guidance when making decisions about Mounjaro. In some countries, national bodies issue specific guidelines — for example, guidelines have been developed in the UK setting — but the specifics of how and when Mounjaro is prescribed vary by healthcare system and by individual clinical judgement. If you want to understand the guidelines that apply to your own situation, the best person to ask is your prescriber, who can explain the criteria and process relevant to you.
Mounjaro carries a Black Triangle (▼) designation
As a relatively new medicine, Mounjaro is subject to additional monitoring. Any side effects you experience should be reported to your healthcare professional and to your national pharmacovigilance reporting scheme (such as the UK's Yellow Card scheme) where applicable. This helps regulators continue to build a safety picture for the medicine.
For a broader overview of what Mounjaro is and how it is used, see our complete Mounjaro information hub.
average weekly weight change in the first 16 weeks of Mounjaro & Wegovy use*
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Already Prescribed? How GLP Trackr Supports Your Journey
Once you have your prescription in hand, staying consistent and organised becomes the day-to-day priority. GLP Trackr's dose logging feature lets you record each injection — including date, time, and dose strength — so you always have an accurate log of where you are in your treatment schedule. A clear record like this can be genuinely useful to bring to follow-up appointments, helping your prescriber see exactly how your titration is progressing.
The app's dose reminders mean you are much less likely to miss a weekly injection, and the side-effect tracker lets you note anything unusual — nausea, fatigue, injection-site reactions — and spot patterns over time. That kind of documented history is far more useful in a prescriber conversation than trying to recall how you felt three weeks ago.
If you are navigating life without a current prescription or exploring what options exist, you may find it helpful to read about accessing Mounjaro and what to consider.
Ready to keep your journey on track? GLP Trackr is free to download on the App Store and Google Play, with a 7-day free trial — log your first dose today and build the record your prescriber will thank you for.
GLP Trackr is an informational and tracking tool, not a medical service. All decisions about your prescription — including dose, duration, and any changes — should be made with your prescriber or doctor. If you have concerns about your medication or experience side effects that worry you, contact your healthcare professional promptly.
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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.
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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.
Mounjaro is a prescription-only medicine and can only be prescribed by a qualified healthcare professional who has assessed your suitability. The criteria they use will depend on clinical guidelines and your individual medical history. Your prescriber or doctor is the right person to advise you.
Yes — prescribers follow clinical guidance when deciding whether Mounjaro is appropriate for a patient. Guidelines vary by country and healthcare system. Your prescriber can explain the criteria that apply to your situation and how any relevant national guidance shapes their decision.
No. Any change to your Mounjaro dose — whether increasing, decreasing, or pausing — should be made only by your prescriber or doctor. Never adjust your dose independently. If you have concerns about your current dose, raise them at your next appointment or contact your healthcare professional.
Log your symptoms and tell your prescriber or doctor. Side effects should also be reported to your national pharmacovigilance scheme where applicable — for example, the UK's Yellow Card scheme. If a side effect is severe or persistent, contact a healthcare professional promptly rather than waiting for a scheduled appointment.
GLP Trackr lets you log each dose, track injection sites, set weekly reminders, and record any side effects — building a clear record of your journey to share with your prescriber. It is a companion tracking app, not a medical service, and does not give dosing advice.