Can Mounjaro Cause Blood Clots?

Mounjaro is a dual GIP and GLP-1 receptor agonist, and Wegovy is a GLP-1 receptor agonist. Both are prescription-only injectable medicines used once weekly. Neither the UK electronic Medicines Compendium (eMC) product information for tirzepatide nor widely referenced prescribing summaries list blood clots (venous thromboembolism) as a recognised side effect of these medicines specifically.

It is worth understanding the broader picture. People prescribed these medicines often have obesity or overweight alongside other health conditions — some of which independently carry cardiovascular or circulatory considerations. This means that if a blood clot event occurs in someone taking one of these medicines, establishing a causal link requires careful clinical assessment, not assumption.

Some research interest exists around GLP-1 receptor agonists and cardiovascular outcomes, and this is an active area of study. However, questions about what any emerging evidence means for your personal situation are exactly the kind of thing to raise with your prescriber or doctor — they have access to your full health history and any updates to clinical guidance.

For context on related cardiovascular topics that people on Mounjaro sometimes ask about, you may find it useful to read about Mounjaro and blood pressure changes or explore whether Mounjaro can cause low blood pressure — both of which relate to circulatory health on this medicine.

If you notice symptoms such as unexplained leg swelling, redness, warmth, sudden chest pain, or breathlessness, contact a healthcare professional promptly. These symptoms can have many causes and warrant assessment — do not wait to see if they resolve on their own.

Any side effect you experience on Mounjaro or Wegovy can be reported to your national reporting scheme (such as the UK's Yellow Card scheme) as well as to your prescriber or doctor. Reporting helps build the evidence base for the safety of these medicines over time.

One of the most practical things you can do when a new symptom appears is record it clearly — when it started, how it felt, and whether anything else changed around the same time. GLP Trackr's side-effect and symptom tracker lets you log exactly this, creating a timestamped record you can bring to your next prescriber appointment rather than trying to recall details from memory.

If you have broader circulatory concerns — such as changes in how you feel after injections, or patterns you have noticed alongside your weekly dose — the app's daily check-in feature lets you note energy levels, mood, and general wellbeing each day, helping you spot trends over time. You can also review related questions about unexpected changes like blood in stool on Mounjaro, another topic where careful symptom logging matters.

GLP Trackr is a tracking and journaling companion — it is not a diagnostic tool and does not replace the guidance of your prescriber or doctor. If something concerns you, your healthcare professional is always the right first call. The app simply helps you arrive at that conversation better prepared, with clear notes rather than vague recollections.

For a broader overview of what to expect and how to track your journey, visit the Mounjaro information hub.

Start logging your symptoms and check-ins today — GLP Trackr is free to try for 7 days on the App Store and Google Play.