What Age Can You Take Mounjaro or Wegovy?

Based on the approved product information for both medicines, here is what is generally understood about age eligibility:

Mounjaro (tirzepatide)

Mounjaro is authorised for use in adults — typically those aged 18 and over. Its prescribing information does not currently cover use in children or adolescents under 18, and prescribers will not routinely offer it to this age group outside of specific clinical circumstances. The upper age limit is not fixed, but older adults may require closer monitoring for certain conditions, which your prescriber will factor in.

Wegovy (semaglutide)

Wegovy has been studied and, in some countries, authorised for use in adolescents as well as adults — though the precise minimum age, and the conditions under which it can be prescribed to younger people, vary by regulatory approval and the individual prescriber's clinical judgement. As with Mounjaro, there is no blanket upper age cut-off, but a prescriber will weigh up any age-related health factors before starting or continuing treatment.

Why age matters in prescribing

These are prescription-only medicines with specific indications. Suitability is not determined by age alone — it also depends on weight, BMI, existing health conditions, and other individual factors. Prescribers consider the full clinical picture. If you have questions about whether age affects your eligibility or ongoing treatment, the right person to ask is your own prescriber or doctor.

For a broader look at how these medicines work and what affects suitability, see our guide to how Mounjaro works. You may also find it useful to read about who can take Mounjaro, which covers other eligibility considerations in more detail.

According to the electronic Medicines Compendium, both tirzepatide and semaglutide are indicated for adults meeting specific clinical criteria — always refer to the patient information leaflet supplied with your medicine or the electronic Medicines Compendium (eMC) for the most current prescribing information.

If you have been prescribed Mounjaro or Wegovy, keeping a clear record of how the medicine is affecting you — regardless of your age — is one of the most practical things you can do. GLP Trackr's side-effect and symptom tracker lets you log how you feel after each dose, note any patterns over time, and build a clear picture to share at your next prescriber appointment. This is especially useful if your prescriber wants to monitor your response closely, as is common for people who are newer to the medicine or have additional health considerations.

Alongside symptom tracking, the dose logging feature means you always have a record of when you injected and at what strength — useful context for any clinical conversation. The doctor report feature can turn your logged data into a summary you can bring to appointments, making those conversations more productive.

GLP Trackr is a tracking companion, not a medical service. Any questions about whether Mounjaro or Wegovy is appropriate for your age, health status, or circumstances should always go to your prescriber or doctor — they know your full history and are best placed to advise you. If anything about your treatment feels unexpected or worrying, contact your healthcare professional promptly.

You might also want to explore related topics such as timing and flexibility with Wegovy doses or taking Mounjaro with specific health conditions like gallstones — both of which are areas where your prescriber's guidance is essential.

Ready to keep better track of your GLP-1 journey? Download GLP Trackr on the App Store or Google Play and try it free for 7 days — log your doses, track how you feel, and walk into every appointment better prepared.