Weekly Injectable GLP-1 Medicines: Injection Sites and Rotation
Once-weekly injectable GLP-1 medicines — including dulaglutide and others in the same class such as semaglutide (Wegovy) and tirzepatide (Mounjaro) — are typically injected subcutaneously (just under the skin) into one of three common areas: the abdomen, the front of the thigh, or the upper arm. Your prescriber or the patient information leaflet that came with your pen will give you the specific guidance for your medicine.
Why Rotation Matters
Injecting into exactly the same spot every week can cause changes to the tissue beneath the skin — a process sometimes called lipohypertrophy — which may affect how the medicine is absorbed. Rotating between sites and varying the precise location within each site helps avoid this. Many people find it surprisingly easy to lose track of where they injected last week, especially over months of treatment.
Handling Your Pen
Pre-filled injection pens for GLP-1 medicines generally need to be stored in a refrigerator until first use, after which they can be kept at room temperature for a period — always check the leaflet that came with your specific pen, or the entry on the electronic Medicines Compendium (medicines.org.uk), for the exact storage guidance, as it can vary by product. Never use a pen that appears damaged, cloudy, or past its expiry date, and discuss any concerns with your prescriber or pharmacist.
If you are interested in how different weekly injectable options compare in terms of their mechanism and licensed uses, the page on weekly weight loss injection options covers the broader landscape, and our overview of weight loss injections sets out the wider context in more detail.
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.
AI Meal Tracking. Built for GLP 1 Appetites.
Point your camera at any meal and let our AI do the rest. Breakfast, doses, weight, mood all tracked in seconds.
Logging Your Injection Routine with GLP Trackr
Keeping an accurate record of your injections — which site you used, when, and at what dose — is one of the most practical things you can do to support a smooth weekly routine. GLP Trackr's injection-site tracking and rotation feature lets you log each injection and shows your rotation history at a glance, so the next site suggestion is always ready for you. No more trying to remember whether it was the left or right side of your abdomen last week.
Alongside site tracking, the app's dose logging means every injection is recorded with its date, time, and dose strength — useful both for your own peace of mind and for bringing an accurate picture to your prescriber appointments. Dose reminders can also be set so a weekly injection never slips your mind during a busy week.
If you are curious about how to access injectable weight management medicines or what the process typically involves, the page on obtaining a weight loss injection and the overview of choosing a weight loss injection offer further informational context — though any decisions about your own prescription always belong with your prescriber or doctor.
Always follow the guidance your prescriber or doctor has given you for your specific medicine and pen. If you experience injection-site reactions that are severe, persistent, or worrying, contact your healthcare professional promptly rather than adjusting your approach on your own. GLP Trackr helps you record what you observe so you can have a more informed conversation — it is not a substitute for clinical advice.
Ready to take the guesswork out of your weekly injection routine? Download GLP Trackr on the App Store or Google Play and explore the injection-site tracker free for 7 days.
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.
Download on the App Store Download on the Google Play
Founding Member Offer
One plan. Everything included. No hidden extras.
Founding Member
Exclusive Offer
Join the first 1,000 membersand lock in our lowest ever price
Offer expires in:
786 of 1000 founding spots remaining
50% OFF
Lifetime Price Lock
Never pay full price • Forever
🔒 No credit card required • Cancel anytime
Premium
Ad-free- Track weight, meals, water, exercise, & sleep
- Log doses, injection sites, & side effects
- 60-second daily morning check-in
- AI meal scanning & barcode scanning
- Personalised AI meal plans & recipes
- Golden Dose Finder AI
- Medication Clock — real-time level tracking
- Daily Brief and predictive side effects
- Full insights & weekly transformation cards
- Unlimited progress photos
- Doctor PDF export & body measurements
- Community Access—Connect with GLP-1 users
Powered by
🔒 No credit card required • Cancel anytime
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.
Download glptrackr today.
Available on iOS and Android. 7-day free trial, no credit card needed.
Frequently asked questions.
Weekly GLP-1 injections are generally administered subcutaneously into the abdomen, front of the thigh, or upper arm. Your prescriber or the patient information leaflet supplied with your pen will confirm the correct sites and technique for your specific medicine.
Injecting repeatedly into the same spot can cause tissue changes under the skin that may affect absorption. Rotating between sites and varying the exact location within each area helps maintain healthy tissue and consistent medicine delivery.
Trulicity (dulaglutide) is primarily licensed for type 2 diabetes management. Weight changes are associated with GLP-1 medicines, but any use outside a medicine's licensed indication is a decision made by your prescriber — always follow their specific guidance.
A tracking app like GLP Trackr lets you log each injection with the date, site, and dose, and shows your rotation history so you always know where to inject next. It also sends reminders so you never miss a weekly dose.
Mild redness or tenderness at the injection site is commonly reported and often short-lived. If a reaction is severe, spreading, or does not improve, contact your healthcare professional promptly rather than attempting to manage it yourself.