What getting the weight loss injection actually involves
Because Mounjaro and Wegovy are prescription-only medicines, the process always begins with a clinical assessment by a qualified prescriber or doctor. They will consider your medical history, current health, any other medicines you take, and whether a GLP-1 medicine is appropriate for you. Only they can make that determination.
The prescription and dispensing step
Once a prescription is issued, it is fulfilled by a registered pharmacy in your country. The medicine arrives as a pre-filled injection pen. Your prescriber or pharmacist will explain how to store and use the pen; if anything is unclear, the patient information leaflet (PIL) that comes with your pen is the definitive reference for device-specific instructions.
Common injection sites
Mounjaro and Wegovy are both administered as once-weekly subcutaneous injections — meaning just under the skin. The three sites most commonly used are the abdomen, the front of the thigh, and the upper arm. Rotating between sites with each injection is generally recommended, as using the same spot repeatedly can cause skin changes over time. Your prescriber or the PIL for your specific pen will guide you on technique.
What this page does not cover
This page is for people already prescribed a weight loss injection. For broader context on weight loss injections and how they work, or if you have questions about the steps involved in getting a prescription, those resources cover the topic in more depth. If you are wondering whether these medicines are available through a public health programme in your country, that depends entirely on local guidelines — a topic worth exploring in our guide to whether the weight loss jab may be available through public healthcare schemes.
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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How GLP Trackr helps once you are injecting
Keeping track of which site you injected last week — and where to go next — is one of those small but genuinely useful habits that is easy to forget on a weekly schedule. GLP Trackr's injection-site tracking logs each injection with its location (abdomen, thigh, or upper arm) and automatically suggests your next rotation site, so you never have to try to remember.
Alongside site rotation, the app logs every dose, date, and time in one place, and sends gentle reminders so a weekly injection does not quietly slip past you. If you ever miss a dose and want to note it before speaking to your prescriber, you can log that too — it becomes a clear record to bring to your next appointment rather than something you have to reconstruct from memory.
GLP Trackr also lets you record how you feel after each injection — whether that is a little nausea, some fatigue, or nothing at all — so you can spot patterns over time and have a meaningful conversation with your prescriber about how the medicine is sitting with you. For a broader picture of the costs and practicalities many people on these medicines think about, our page on the cost of weight loss injections may be useful context.
GLP Trackr is built specifically for people on Mounjaro and Wegovy — download it free on the App Store or Google Play and explore everything it does with a 7-day free trial.
A note on safety: any questions about your injection technique, dose, or whether the medicine is right for you should always go to your prescriber or doctor — they know your full picture. GLP Trackr is a tracking companion, not a substitute for their guidance.
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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
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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Frequently asked questions.
Weight loss injections such as Mounjaro and Wegovy are prescription-only medicines. They can only be obtained after a clinical assessment by a qualified prescriber, who will determine whether the medicine is appropriate for you, and then dispensed by a registered pharmacy.
The most commonly used injection sites are the abdomen, the front of the thigh, and the upper arm. Rotating between these sites with each weekly injection is generally recommended. Your prescriber and the patient information leaflet for your specific pen provide guidance on technique.
Yes. Mounjaro (tirzepatide) and Wegovy (semaglutide) are both prescription-only medicines in most countries. A qualified prescriber must assess your suitability and issue a prescription before the medicine can be dispensed by a registered pharmacy.
GLP Trackr lets you log each injection with its site, date, and dose strength, then suggests your next rotation site automatically. It also sends weekly dose reminders and keeps a record you can share with your prescriber.
Any decision about a missed dose belongs with your prescriber or doctor — do not double up or adjust your schedule without their guidance. You can log the missed injection in GLP Trackr to create a clear record to discuss at your next appointment.