What is known about Mounjaro supply disruptions
Mounjaro is a prescription-only, once-weekly injectable medicine containing tirzepatide. Like many injectable medicines that have seen rapidly rising demand, its supply chain has faced pressure in a number of countries. Shortages have tended to affect specific dose strengths at different times, meaning availability can vary considerably depending on which pen strength you are currently using.
Why shortages happen
Manufacturing capacity for injectable biologics and pen-device medicines takes time to scale. When prescriptions for a medicine grow faster than production can keep pace, certain strengths can become temporarily unavailable through pharmacies — even while others remain in stock. Regulatory bodies and manufacturers in various countries have issued guidance at different points, but this changes frequently.
Where to find current information
Because the situation evolves quickly, no static webpage — including this one — can reliably serve as a live shortage tracker. For the most accurate picture:
- Your prescriber or doctor can advise whether your current dose is available and whether any interim plan is appropriate for you personally.
- Your dispensing pharmacy often has real-time stock visibility and may be able to source from alternative wholesalers.
- Your national medicines regulator may publish shortage notices — for example, the MHRA publishes supply disruption alerts for the UK at gov.uk, but check the relevant authority for your own country.
For a broader look at the background to supply issues, see our page on understanding the Mounjaro shortage, and if you are also curious about the supply picture for the other major GLP-1 medicine, our page on whether there is a Wegovy shortage covers what is known there. For a full overview of Mounjaro, visit our Mounjaro information hub.
Any decision about what to do if your pen is unavailable — whether to wait, seek an alternative pharmacy, or discuss options with your clinician — belongs with your prescriber, not a tracking app or a webpage.
average weekly weight change in the first 16 weeks of Mounjaro & Wegovy use*
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How GLP Trackr helps when supply is uncertain
When your supply is disrupted, having a clear, accurate record of your injection history becomes more valuable than ever. GLP Trackr's dose logging feature lets you record every injection — the date, dose strength, and which pen — so you have a precise timeline to share with your prescriber or pharmacist. That record can be genuinely useful when discussing your situation: they can see exactly where you are in your schedule and make informed decisions for you.
The app's doctor report feature pulls together your logged doses, weight trends, and any side effects you have noted, giving you something concrete to bring to an appointment rather than trying to recall weeks of detail from memory. If your supply is interrupted and you need to discuss next steps, that summary can make the conversation more productive.
GLP Trackr also includes dose reminders, so that when your supply does come through, you can get straight back onto your regular weekly schedule without missing a beat.
If you want a clear record of your Mounjaro journey — especially through a period when supply is unpredictable — download GLP Trackr on the App Store or Google Play. Your first 7 days are completely free.
GLP Trackr is a tracking and journaling app. It does not supply medication, facilitate prescriptions, or provide medical advice. If your supply is disrupted, please contact your prescriber or doctor promptly — they are the right person to guide any decisions about your treatment.
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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.
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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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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.
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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.
Supply of Mounjaro (tirzepatide) has been disrupted in several markets, with availability varying by dose strength and country. The most accurate current information comes from your prescriber or doctor and your dispensing pharmacy, as the situation changes frequently.
Shortages have tended to affect specific strengths at different times, and availability differs by country and even by pharmacy. Your prescriber or doctor and your dispensing pharmacy are the best sources of up-to-date stock information for your particular dose.
Contact your prescriber or doctor before making any changes to your treatment. Do not adjust your dose or schedule without their guidance. Your pharmacist may also be able to check availability from alternative suppliers in your area.
Your national medicines regulator is the authoritative source — for example, the MHRA publishes supply disruption alerts in the UK. Check the equivalent body for your own country, as official notices are country-specific and updated regularly.
GLP Trackr can log your injection history and generate a summary to share with your prescriber, helping you have an informed conversation about your treatment. It does not supply medication or provide medical advice — those decisions belong with your healthcare professional.