GLP-1 Injection Site Tracker Guide (2026) — Mounjaro & Zepbound
Best injection sites for GLP-1 pens — abdomen, thigh and upper arm — and how to log rotation in a tracker.
"Best place to inject Zepbound" and "where to inject Mounjaro" are among the fastest-rising GLP-1 searches — because injection day raises practical questions, especially in the first few weeks.
Common GLP-1 injection sites
Most weekly pens (Mounjaro, Zepbound, Wegovy, Ozempic) use similar site options, as described in the Zepbound how-to-use guide, Mounjaro prescribing information, and Wegovy label:
- Abdomen — at least a few centimetres from the belly button
- Front of thigh
- Back of upper arm — often easier with help or a device
Your pen leaflet and clinician instructions are the source of truth — see also the NHS tirzepatide medicine page for general guidance. This guide focuses on what to record, not replacing medical advice.
Why site rotation helps
Rotating injection sites may reduce soreness or skin irritation for some people. If your clinician recommends rotation, a tracker note like "left thigh" or "abdomen — right side" takes five seconds and saves guesswork next week.
What to log each injection
- Date and time
- Dose strength
- Injection site
- Any immediate soreness or reaction
Track it in one place
GLPPal keeps injection site history alongside your dose timeline.
See the injection tracker → · Download on the App Store →
Track your GLP-1 journey with GLPPal
GLPPal helps you log injections, appetite, weight and side effects in one calm app — built for Mounjaro, Zepbound, Wegovy and other GLP-1 users.
Sources
- How to use Zepbound KwikPen — Eli Lilly
- Mounjaro prescribing information — DailyMed (NIH/FDA)
- Wegovy prescribing information — DailyMed (NIH/FDA)
GLPPal is designed for tracking and educational purposes only and is not medical advice. Always follow your healthcare provider's guidance.
