What GLP-1 Medications Actually Are
GLP-1 stands for glucagon-like peptide-1, a hormone your body produces naturally in response to eating. Medicines that mimic or enhance this pathway are called GLP-1 receptor agonists. They work by binding to GLP-1 receptors throughout the body — including in the brain and digestive tract — influencing feelings of fullness, appetite, and the speed at which the stomach empties.
The two main weight-management GLP-1 medicines
Wegovy contains semaglutide, a GLP-1 receptor agonist. Mounjaro contains tirzepatide, which acts on both GLP-1 and a second hormone pathway called GIP (glucose-dependent insulinotropic polypeptide) — making it a dual receptor agonist. Both are given as once-weekly injections using a pre-filled pen device, and both are prescription-only medicines. Suitability and dose are always decided by your prescriber or doctor, not by the medicines themselves.
What people commonly experience
Many people on GLP-1 medicines report a noticeable reduction in appetite and what is often described as "food noise" — the persistent mental preoccupation with food that can make managing eating feel effortful. Slower stomach emptying is also commonly reported, which can contribute to a greater sense of fullness after smaller meals. These effects vary from person to person and are not guaranteed for everyone.
For a deeper look at the mechanism behind one of these medicines specifically, see our guide on how Mounjaro works. You can also explore what GLP-1 means as a hormone and read more about what GLP-1 medications include for a broader overview of this medicine class.
Are they the same as insulin?
No. GLP-1 medicines are not insulin and work through a different mechanism. They are not a cosmetic quick fix, and they are not suitable for everyone — your prescriber will have assessed whether one is appropriate for you based on your individual health history.
average weekly weight change in the first 16 weeks of Mounjaro & Wegovy use*
Tracking the right four numbers — weight, waist, protein and dose — turns a noisy chart into a clear story. That's the loop GLP-1 users keep coming back for.
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Tracking Your GLP-1 Journey with GLP Trackr
Understanding what GLP-1 medicines do is one thing — but seeing how they are working for you specifically is where a tracking tool becomes genuinely useful.
GLP Trackr's insights and analytics are built around this idea. As you log your data day by day, the app surfaces patterns in your own results — connecting things like sleep, food intake, and energy levels to how your journey is progressing. The daily morning check-in lets you record weight, mood, food-noise levels, and energy in around 30 seconds, building a personal picture of how the medicine is affecting your day-to-day experience over time.
If you notice changes in appetite, energy, or how food is sitting with you, the side-effect and symptom log lets you record those observations so you can bring a clear, time-stamped summary to your next prescriber appointment — rather than trying to recall how things felt weeks earlier.
Learn more about the full range of things worth tracking in our overview of what GLP-1 means for your weight-loss journey.
GLP Trackr is an informational and tracking tool — it is not a substitute for the advice of your prescriber or doctor. If you have questions about how these medicines work for your situation, or if you experience anything unexpected, speak with your healthcare professional promptly.
Ready to start making sense of your own data? GLP Trackr is free to try for 7 days — available now on the App Store and Google Play.
What does glptrackr include?
10+ powerful features. One app. Built specifically for Mounjaro and Wegovy users.
Everything your GLP-1 journey needs. Free to try for 7 days.
Morning Check-In
Start every day with a 60-second wellness check-in. Log how you're feeling, track nausea, appetite, energy, and mood — giving you and your care team a complete picture of how your medication is working.
Injection Tracking
Log every dose with a single tap. Track your dose history, phase in your cycle, estimated medication levels, and upcoming injection dates — with reminders so you never miss a scheduled shot.
Hydration Reminders
Staying hydrated is especially important on GLP-1 medications. Set daily water targets, log intake throughout the day, and receive smart nudges when you're falling behind your goal.
Smart Meal Planning
Personalized meal plans built around your current dose phase and side effects. Every meal is GLP-1 optimized — high in protein, gentle on the stomach, and scaled to your reduced appetite.
Recipe Library
Browse 50+ high-protein, GLP-1-friendly recipes filtered by meal type, prep time, and dietary needs. Every recipe includes full nutrition info, step-by-step instructions, and tips for eating with side effects.
Progress Analytics
Beautiful, easy-to-read charts show your weight loss trajectory, weekly nutrition trends, medication responses, and wellbeing scores over time — turning raw data into genuine insights.
AI Meal Scanning
Snap a photo of any meal and get a full nutrition breakdown in seconds — calories, protein, carbs, fat, and fibre. No searching. No manual logging. Just point, snap, and track.
Exercise & Steps
Log walks, workouts, and movement with activity targets that flex with your energy levels. On lower-energy dose days, gentler targets keep you moving without burning out.
Community Support
Connect with thousands of others navigating the same medication journey. Share milestones, ask questions, find accountability partners, and get support from people who truly understand.
Never Forget a Dose Again.
Log your Mounjaro or Wegovy injection in seconds. Track your pen, your dose level, and your injection site — so you always know exactly where you are in your treatment.
Watch Your Body Transform, Week by Week.
Log your weight, measurements, and how you're feeling after each dose. GLPTrackr turns your data into clear, motivating charts that show you how far you've really come.
You're Not on This Journey Alone.
Connect with thousands of real GLP-1 users sharing their wins, side effect tips, and meal ideas. Get the support of people who truly get it — because they're living it too.
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The Most Advanced GLP-1 Brain Ever Built.
The first AI built exclusively for GLP-1 weight loss. Every insight, every meal plan, every prediction trained on one thing only: helping you get the most out of your medication.
Knows Your Cycle
GLPIQ tracks where you are in your injection cycle and adjusts everything around it: lighter meals on nausea days, higher protein when appetite returns, and smarter targets as your medication level shifts.
Predicts Before You Feel It
GLPIQ learns your personal side effect patterns over time. After a few cycles, it starts warning you the morning before a rough day — and adjusts your meal plan automatically.
Finds Your Golden Dose
GLPIQ analyses every dose you've been on: weight loss rate, side effects, food noise, mood, protein adherence and tells you which dose gave you the best results. No other app does this.
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Frequently asked questions.
GLP-1 stands for glucagon-like peptide-1, a hormone the body produces naturally after eating. Medicines that mimic this hormone are called GLP-1 receptor agonists and include prescription weight-management injections such as Wegovy (semaglutide) and Mounjaro (tirzepatide).
GLP-1 medicines bind to receptors in the brain and digestive system, commonly reducing appetite, increasing feelings of fullness, and slowing stomach emptying. Many people also report reduced food noise. Effects vary between individuals and are not the same for everyone.
Wegovy (semaglutide) is a GLP-1 receptor agonist. Mounjaro (tirzepatide) is a dual GIP and GLP-1 receptor agonist, meaning it acts on two hormone pathways. Both are prescription-only once-weekly injections; suitability for either is decided by your prescriber or doctor.
No. GLP-1 medicines are not insulin and work through a different mechanism. They act on appetite and fullness pathways rather than directly controlling blood sugar in the way insulin does. Always discuss your specific medicines and how they interact with your prescriber or doctor.
A tracking app cannot provide medical analysis, but logging your daily weight, appetite, energy, and side effects over time helps you spot personal patterns and gives you a clear record to discuss with your prescriber. GLP Trackr is designed specifically to support this for people already on Mounjaro or Wegovy.