Eye Side Effects on Mounjaro and Wegovy: What People Report

Reports from people taking GLP-1 and dual GIP/GLP-1 medicines include a range of eye-related experiences. These are not always listed as common side effects in official product information, but they are worth being aware of.

Visual disturbances and floaters

Some people describe brief changes in their vision or the appearance of floaters — small shapes or specks that drift across the visual field — during the early weeks of treatment or after a dose change. Mounjaro eye floaters and similar visual disturbances have been discussed in patient communities, though the precise relationship to the medicine is not always clear.

Eye discomfort and pain

Mounjaro eye pain and a general sense of eye discomfort are mentioned by some users, particularly around periods of nausea or fatigue. Dry eyes and mild irritation are also reported, which may relate to reduced fluid intake if appetite suppression is affecting how much someone drinks.

Eye twitching

Eye twitching on Wegovy and Mounjaro is occasionally noted. Twitching of the eyelid (myokymia) is usually benign and can be related to fatigue, dehydration, or caffeine intake — all of which can be influenced by how the medicine affects appetite and daily habits.

What official information says

The electronic Medicines Compendium (eMC) product information for both medicines should be your primary reference for the full list of reported adverse effects. Diabetic retinopathy complications have been noted in the clinical literature around GLP-1 medicines more broadly, particularly in people who already have diabetes-related eye conditions. This is a specific concern to raise with your prescriber if it applies to you — they can assess your individual situation.

For a broader picture of what side effects people experience, see our guide to Mounjaro side effects, and if you are taking semaglutide, the Wegovy side effects overview covers what is commonly reported on that medicine.

Keeping a clear record of when eye symptoms appear — and what else was happening at the time — is one of the most useful things you can do before a conversation with your prescriber.

GLP Trackr's side-effect tracker lets you log symptoms as they happen, with a date and time stamp, so you are not trying to recall details from memory at your next appointment. Over time, the app can help you spot patterns: for example, whether eye discomfort tends to appear in the day or two after an injection, or whether it correlates with lower hydration or disrupted sleep — both of which you can also log in the daily check-in.

The doctor report feature pulls your logged data into a summary you can bring to your prescriber, giving them a factual record rather than a general impression. That kind of detail is genuinely helpful when discussing a symptom that is hard to describe in a short appointment.

Important: GLP Trackr is a tracking tool, not a substitute for clinical advice. If you experience sudden vision loss, significant eye pain, flashing lights, or a rapid increase in floaters, contact your healthcare professional promptly — do not wait for your next scheduled appointment. Any decision about continuing, adjusting, or stopping your medication must be made with your prescriber, not on your own. If your country has a national adverse-event reporting scheme (such as the UK's Yellow Card scheme), your prescriber or pharmacist can advise you on how to report unexpected side effects.

You may also find it helpful to read about other less-discussed side effects of Mounjaro that people track alongside their main symptoms.

Ready to keep a clearer record of how you feel? Download GLP Trackr on the App Store or Google Play — it is free to try for 7 days, with no commitment needed to get started.