GLP-1 Meds: What People Already on Them Need to Know

GLP-1 stands for glucagon-like peptide-1, a hormone naturally produced in the gut that plays a role in regulating appetite and blood sugar. Medicines in this class act on GLP-1 receptors to increase the sense of fullness, reduce appetite — sometimes described as quieting "food noise" — and slow the rate at which the stomach empties. These effects are commonly reported by people taking these medicines, though individual experience varies.

There are currently two main GLP-1 medicines widely prescribed for weight management:

• Mounjaro (tirzepatide) — a dual GIP and GLP-1 receptor agonist, taken once weekly by injection. You can read more on our Mounjaro overview page.
• Wegovy (semaglutide) — a GLP-1 receptor agonist, also taken once weekly by injection.

Both are prescription-only medicines. Suitability, dosing, and any adjustments are decided entirely by your prescriber or doctor — not by any app or website. For a broader look at how GLP-1 receptor agonists work as a class, see our page on GLP-1 receptor agonists explained.

These medicines are typically started at a low dose and increased gradually over a schedule set by your prescriber. This titration approach is designed to help your body adjust and to manage commonly reported side effects such as nausea, indigestion, or fatigue. According to NHS guidance, gastrointestinal effects are among the most commonly reported when starting these medicines and often ease over time. For a broader introduction to GLP-1 and what it means for your journey, our guide to GLP-1 covers the topic in more detail.

One of the most practical challenges people on GLP-1 meds face is simply staying on top of a weekly routine — remembering when the last dose was, which injection site was used, and how the body has responded over time. That is where a dedicated tracking companion makes a genuine difference.

GLP Trackr is built specifically for people already taking Mounjaro or Wegovy. The most immediate feature for anyone managing a weekly injection schedule is dose and injection-site logging: every shot is recorded with its date, dose strength, and site (abdomen, thigh, or upper arm), and the app suggests your next rotation automatically. Forgetting which side you used last week becomes a thing of the past.

Beyond the injection itself, the app's side-effect tracker lets you log how you feel after each dose — nausea, fatigue, changes in energy — and surfaces patterns over time. That kind of record is genuinely useful to bring to your next prescriber appointment, turning a vague recollection into a clear, dated log. You can explore how this fits into your broader experience on our Mounjaro tracking guide.

GLP Trackr also captures the wider picture: weight trends, daily mood and energy check-ins, food logging via AI photo scan, and insights that show what is actually shifting week by week. Progress on GLP-1 meds is rarely just about the number on the scale, and the app is designed to reflect that.

As with all aspects of your treatment, always follow the guidance of your prescriber or doctor — they know your full medical history. GLP Trackr is a tracking and journaling tool; it is not a substitute for clinical advice, and any questions about your dose, side effects, or suitability should be directed to your healthcare professional.

If you are already prescribed a GLP-1 medicine and want one place to track everything — shots, food, weight, and how you feel — give GLP Trackr a try. It is available free on the App Store and Google Play, with a 7-day trial so you can see whether it works for you.