Weight Loss Jab Shortage: How to Stay on Track When Supply Is Disrupted

Demand for GLP-1 and dual GIP/GLP-1 receptor agonist medicines has grown significantly faster than manufacturers anticipated. Mounjaro (tirzepatide) and Wegovy (semaglutide) are both prescription-only injectable medicines that require complex biological manufacturing processes, which can make scaling supply difficult to do quickly. The result has been intermittent availability of certain dose strengths in various markets worldwide.

What a shortage does NOT mean

• It does not mean you should skip doses without guidance — that decision belongs entirely with your prescriber.
• It does not mean you should source your medicine from unverified or informal channels. Counterfeit and unlicensed versions of injectable weight loss medicines have been reported; using anything other than a product dispensed by a registered pharmacy from a legitimate supply chain carries serious safety risks.
• It does not mean your progress is lost — many people find that the habits and patterns they have built continue to support them even during a short gap.

Questions worth raising with your prescriber

If you are affected by a shortage, your prescriber or doctor is the right person to advise on options. They may have information about alternative dose strengths in stock, expected resupply timelines through registered pharmacies, or what monitoring is appropriate during any gap. They know your full medical history in a way no app or article can replicate.

For context on how these medicines are classified and what official guidance says, the electronic Medicines Compendium (eMC) holds the current Summary of Product Characteristics for both medicines.

If you want to understand more about these injectable medicines generally, the weight loss jab overview covers the basics, and our page on weight loss jab news and updates tracks developments that may be relevant to supply.

One practical thing you can do right now is keep a clear record of your injection history — and that is exactly what GLP Trackr is built for. When a dose is delayed or missed, having a precise log of every injection you have taken (date, dose strength, and site) gives your prescriber something concrete to work from when they advise on next steps.

Dose and site logging

GLP Trackr lets you record each injection as it happens: the date, the dose, and the injection site (abdomen, thigh, or upper arm). If there is a gap in your schedule, that gap shows clearly in your log — useful context to bring to your next prescriber appointment rather than trying to recall it from memory.

Reminders to keep you on schedule

Once supply resumes, it is easy to lose track of your weekly rhythm. Dose reminders in the app help you pick back up exactly where your prescriber advises, without the uncertainty of "was it this week or last week?"

Tracking the bigger picture

A shortage can feel unsettling, especially if you have been making good progress. The weight, mood, and wellbeing check-ins in GLP Trackr let you keep logging your journey even during a gap, so you can see your full picture — not just the weeks when the pen was available.

GLP Trackr is a tracking companion, not a medical service. It does not replace your prescriber's advice about what to do during a shortage, and it does not help you source or obtain medication. If you are experiencing a supply gap, please speak with your prescriber or doctor promptly — they are the right person to guide you through it.

For a broader look at injectable weight loss medicines and how they work, visit the weight loss injections hub, or see our page specifically on Mounjaro as a weight loss jab. If your shortage involves questions about how these medicines are accessed through different healthcare systems, our weight loss jab and NHS access page covers that topic.

Keep your injection history clear and your journey documented — download GLP Trackr on the App Store or Google Play and start a free 7-day trial today.