What the Weight Loss Jab Actually Is
The term weight loss jab is widely used in everyday conversation and in the media to describe GLP-1 receptor agonist medicines used for weight management. The two most commonly discussed are Wegovy (semaglutide) and Mounjaro (tirzepatide). Wegovy acts on GLP-1 receptors involved in appetite regulation, while Mounjaro acts on both GLP-1 and GIP receptors — making it a dual-action medicine. Both are given as a once-weekly subcutaneous injection, typically into the abdomen, outer thigh, or upper arm.
These medicines are prescription-only. They are not available over the counter, and suitability is determined entirely by your prescriber based on your individual health profile. No content here, and nothing in the GLP Trackr app, constitutes advice on whether these medicines are right for you — that decision belongs with your doctor.
Injection sites and rotation
Most prescribing information and patient leaflets advise rotating your injection site each week. This means not using exactly the same spot repeatedly, which can help reduce the chance of skin irritation or changes at the injection site. Common sites are the abdomen, outer thigh, and upper arm — your prescriber or the patient information leaflet that came with your pen will give you specific guidance on technique and site selection.
If you want to read more about specific medicines in this category, see our pages on Mounjaro as a weight loss jab and weight loss jab eligibility. You can also explore what to do if your weight loss jab is affected by shortage and keep up with the latest weight loss jab news.
A note on media coverage
You may have seen references to public figures discussing their use of weight loss injections, or news about government interest in expanding access to these medicines. Media coverage has grown substantially, and it reflects genuine clinical interest in this class of treatment. However, individual results, experiences, and suitability vary widely — and no celebrity or news story should be taken as medical guidance for your own treatment.
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Tracking Your Weight Loss Jab with GLP Trackr
One of the simplest but most useful habits you can build around a weekly injection is logging each dose — when you gave it, which site you used, and which pen strength. GLP Trackr is built specifically for this: its injection-site tracking and rotation feature records every site you use and suggests where to inject next, so rotation becomes automatic rather than something you have to remember yourself.
Alongside site tracking, the app lets you log each dose with date, time, and strength, and set a gentle weekly reminder so you never miss your scheduled injection day. If you do happen to miss a dose, log it in the app so you have an accurate record to discuss with your prescriber — dose decisions, including what to do after a missed injection, should always be made with their guidance, not independently.
The app also includes a side-effect tracker, which is particularly useful in the early weeks when nausea, fatigue, or other commonly reported effects may be more noticeable. Logging how you feel after each injection helps you spot patterns over time and gives you something concrete to bring to your next prescriber appointment. For more on the journey over time, see what a year on a weight loss jab can look like.
If cost or access is on your mind, our page on weight loss jab pricing and finding affordable options covers what to know — GLP Trackr itself does not sell or supply any medicine, and any questions about obtaining your prescription should go to a registered pharmacy and your prescriber.
For a fuller picture of everything covered in this category, visit our weight loss injections hub.
If you experience any side effect that feels severe, persistent, or worrying — including unusual pain, significant vomiting, or anything that concerns you — contact your healthcare professional promptly. GLP Trackr helps you record your journey; it is not a substitute for clinical care.
Ready to bring some structure to your weekly injection routine? GLP Trackr's site-rotation tracker and dose reminders are free to try — download on the App Store or Google Play and explore everything with a 7-day free trial.
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.
The term weight loss jab commonly refers to prescription injectable medicines such as Wegovy (semaglutide) or Mounjaro (tirzepatide). Both are once-weekly injections prescribed by a healthcare professional for weight management. They are not available without a prescription, and suitability is decided by your prescriber.
Common injection sites include the abdomen, outer thigh, and upper arm. Your prescriber and the patient information leaflet that came with your pen will guide you on the correct technique and location. Always follow their instructions rather than general online advice.
Yes — most prescribing guidance advises rotating the injection site each week to reduce the risk of skin irritation or changes at the site. Avoid injecting into exactly the same spot repeatedly. GLP Trackr can log each site and suggest your next rotation automatically.
GLP Trackr is a companion app built specifically for people already prescribed Mounjaro or Wegovy. It logs each injection, tracks site rotation, sends weekly dose reminders, and records side effects — all in one place. It is available free on the App Store and Google Play.
Any decision about a missed dose should be made with your prescriber or by following the patient information leaflet — not based on general advice. You can log a missed dose in GLP Trackr to keep an accurate record for your next appointment.