GLP-1 Medication Level Chart
See how estimated semaglutide or tirzepatide levels rise and fall between weekly injections — and why appetite can return before your next dose.
Half-life
~5 days
Relative level now
100%
Day in weekly cycle
Day 1 of 7
Dashed lines mark weekly injection days. Levels build over the first few weeks then stabilise into a repeating weekly rhythm — many users report stronger appetite suppression mid-week and more hunger toward day 6–7. This is an educational model, not a clinical blood level.
Chart ends Sun, 13 Sept 2026 · Brands: Mounjaro, Zepbound
Share this tool
Link or cite this page from your blog, clinic site or patient group.
Suggested citation: GLP-1 Medication Level Chart — www.glppal.app/tools/medication-level-chart
What is a medication level chart?
After each weekly injection, GLP-1 medication levels in your body gradually decline until the next dose. Semaglutide has a half-life of about 7 days; tirzepatide about 5 days. This means many people feel strongest appetite suppression mid-week and notice hunger returning toward day 6 or 7 — a normal pharmacological pattern, not a sign the medication stopped working.
How to read the medication level chart
- 1
Select semaglutide (Wegovy/Ozempic) or tirzepatide (Mounjaro/Zepbound).
- 2
Enter your dose and first injection date.
- 3
Watch how estimated relative levels build over the first weeks, then stabilise.
- 4
Track your real-world appetite and side effects alongside this in GLPPal.
Start tracking your GLP-1 journey with GLPPal
Download free on the App Store — injections, appetite, weight and side effects in one calm timeline.
Related GLP-1 tools
- Titration ScheduleBuild a dated dose escalation calendar for Mounjaro, Wegovy, Zepbound, Ozempic and Saxenda — standard or slower pacing.Read more
- Injection Day PlannerEnter your first injection date and get the next 12 weekly shot dates — plus a downloadable calendar for reminders.Read more
- Protein CalculatorHow much protein on Mounjaro, Ozempic, Wegovy or Zepbound? Get a daily target, per-meal amount and example foods.Read more
Explore more on GLPPal
Tracking tools
Medication Level Chart FAQ
No. This chart uses a simplified half-life model for education only. Real concentrations vary by person, injection site, and other factors. It illustrates the weekly cycle pattern many users report.
Track your full GLP-1 journey in GLPPal
Download on the App Store. Log injections, appetite, weight and side effects — with reminders and weekly pattern insights.
GLPPal is designed for tracking and educational purposes only and is not medical advice.