Understanding the Mounjaro Supply Situation
Tirzepatide — the active substance in Mounjaro — has seen periods of constrained supply in several markets. Demand for GLP-1 and dual GIP/GLP-1 receptor agonist medicines has grown rapidly since their approvals for weight management, and manufacturing capacity has not always kept pace. This has led to intermittent shortages at pharmacy level in various countries, with some dose strengths affected more than others at different times.
What a shortage typically means in practice
A shortage does not mean Mounjaro has been discontinued or withdrawn. It usually means that certain pen strengths are temporarily on allocation or delayed through the supply chain. Availability can vary significantly between pharmacies, regions, and countries — so if one source has limited stock, another may not.
What to do if you cannot access your next dose
- Contact your prescriber or doctor first. They may be able to advise on which pharmacies have stock, whether a different strength is available as a bridge, or what to do in the meantime. Do not adjust your dose or schedule without their guidance.
- Check with more than one registered pharmacy. Stock levels fluctuate and vary by location.
- Do not attempt to source the medicine from unregistered or online-only suppliers. Mounjaro is a prescription-only medicine; it should only be obtained through a legitimate prescriber and registered pharmacy in your country.
Staying informed
Supply situations change frequently. For the latest information on whether a Mounjaro shortage is currently affecting your area, check the most recent shortage update — this page is updated regularly to reflect current availability news. You may also find it useful to review our broader Mounjaro information hub for general guidance on managing your treatment. If you are also curious whether similar issues affect semaglutide, our page on the Wegovy supply situation covers that separately.
average weekly weight change in the first 16 weeks of Mounjaro & Wegovy use*
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When supply is unpredictable, keeping accurate records of your doses becomes even more valuable. GLP Trackr's dose logging feature lets you record every injection — the date, dose strength, and which pen you used — so you always have a clear picture of where you are in your treatment schedule. If there is a gap in supply, having that log means you can tell your prescriber exactly when your last dose was and discuss next steps with full clarity.
The app's dose reminders also help you stay on top of your weekly schedule, so that once your supply is restored, you slip back into your routine without missing a beat. And if a shortage causes you to experience any changes — in how you feel, your appetite, or your progress — the side-effect and wellbeing tracking tools let you record those observations over time and bring a clear picture to your next prescriber appointment.
GLP Trackr does not sell, supply, or source Mounjaro or any other medicine. It is a tracking and journaling app for people who are already prescribed their treatment. For any questions about supply, dosing decisions, or what to do during a gap in access, always follow the guidance of your prescriber or doctor — they know your full history and are best placed to advise.
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Frequently asked questions.
Mounjaro supply has been intermittently disrupted in the UK and other countries since launch. Availability varies by dose strength, pharmacy, and region. For the latest situation, check with your prescriber or doctor and consult up-to-date supply guidance from official sources.
Contact your prescriber or doctor as soon as possible. They can advise on current availability, whether an alternative arrangement is appropriate, and what to do in the interim. Do not adjust your dose or schedule without their guidance.
Supply disruptions have tended to affect certain dose strengths more than others at different times. Your prescriber or pharmacist is best placed to advise on which strengths are currently available in your area.
Mounjaro is a prescription-only medicine and should only be obtained through a legitimate prescriber and registered pharmacy in your country. Unregistered suppliers carry serious safety risks and are not a recommended alternative.
GLP Trackr lets you log every dose, so you have an accurate record of when you last injected. This helps you have an informed conversation with your prescriber about next steps. The app does not supply or source medication.