Who Can Use Weight Loss Injections: General Criteria
Because Mounjaro and Wegovy are prescription-only, eligibility is always assessed on an individual basis by a healthcare professional. That said, there are general criteria that prescribers commonly consider, based on clinical guidelines and the medicines' approved indications.
Body weight and BMI thresholds
These medicines are typically considered for adults whose body mass index (BMI) meets a certain threshold — often 30 kg/m² or above, or a lower threshold (commonly around 27 kg/m²) when a weight-related health condition such as type 2 diabetes, high blood pressure, or high cholesterol is also present. The precise thresholds that apply to you depend on your prescriber, your country's guidelines, and your full medical history.
Medical history and contraindications
Prescribers review a person's full medical picture before recommending either medicine. There are conditions and circumstances where these medicines are generally not considered appropriate — including certain thyroid conditions, a personal or family history of medullary thyroid carcinoma, pancreatitis history, pregnancy, or breastfeeding. This is one of many reasons the decision must rest with a qualified prescriber, never a self-assessment alone.
Age considerations
Both medicines are generally intended for adults. Whether either is appropriate for someone under 18 is a clinical decision made by a specialist prescriber — it is not a straightforward self-assessment.
Ongoing supervision
Being prescribed a weight loss injection is the beginning, not the end, of the clinical relationship. Prescribers typically monitor progress, adjust doses over time, and review whether continued use remains appropriate. Suitability is not a one-time tick-box — it is an ongoing assessment. For a broader overview of how these medicines work and what the injectable treatment journey looks like, see our guide to weight loss injections.
If you are curious about how widely these medicines are being used — including among public figures — our page on well-known people who have spoken about weight loss injections offers some context on how the conversation around them has grown.
average weekly weight change in the first 16 weeks of Mounjaro & Wegovy use*
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Tracking Your Injection Journey with GLP Trackr
Once you have been prescribed a weight loss injection, staying consistent and organised becomes one of the most practical things you can do. GLP Trackr is built specifically for people already on Mounjaro or Wegovy, and the injection-site tracking feature is a good place to start.
The app logs each injection — recording the site (abdomen, thigh, or upper arm), the date, and the dose strength — and then suggests your next rotation site automatically. Rotating injection sites is generally recommended to reduce the chance of localised skin reactions, and having an automatic prompt removes the mental load of remembering where you last injected.
Alongside site tracking, the app's dose reminder feature means a weekly injection is less likely to slip your mind during a busy week. You can also use the side-effect log to record how you feel in the days after each dose — useful information to bring to your next prescriber appointment rather than trying to recall it from memory.
If you have questions about the cost of these medicines and whether the investment is worthwhile, our page on weight loss injection pricing addresses the topic in general terms, though GLP Trackr itself does not sell or supply any medication.
GLP Trackr is a tracking and journaling companion — it does not replace your prescriber's guidance, and any questions about whether you are suitable for these medicines, or about changes to your dose or schedule, should always go to your healthcare professional. If you experience side effects that feel severe or persistent, contact your prescriber or doctor promptly rather than adjusting anything on your own.
Ready to bring more structure to your injection schedule? Download GLP Trackr on the App Store or Google Play and explore it free for your first 7 days — log your sites, set your reminders, and start building a clear record of your journey.
What does glptrackr include?
10+ powerful features. One app. Built specifically for Mounjaro and Wegovy users.
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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.
No. Mounjaro and Wegovy are prescription-only medicines. A qualified prescriber or doctor assesses your medical history, weight, and any existing conditions before deciding whether either medicine is appropriate for you. Self-prescribing is not an option.
Prescribers typically consider these medicines for adults with a BMI of 30 or above, or a lower BMI when a weight-related health condition is present. Individual eligibility depends on your full medical history and your prescriber's clinical judgement — criteria vary by person and by country.
These medicines are generally not recommended during pregnancy or breastfeeding. If your circumstances change, speak with your prescriber or doctor promptly — they will advise whether to continue, pause, or stop your treatment. Do not make this decision on your own.
GLP Trackr lets you log each injection site and dose, get automatic rotation suggestions, set weekly dose reminders, and record side effects over time. It is a tracking companion for people already prescribed Mounjaro or Wegovy — it does not provide medical advice or supply medication.
Potential interactions with other medicines are assessed by your prescriber as part of the eligibility review. Never start, stop, or combine medications without guidance from your healthcare professional — this includes over-the-counter products and supplements.