Half-lives / Semaglutide
Semaglutide half-life
≈ 7 days (168 hours ≈ 7 days) — computed decay curve below, primary source cited.
| Half-life | ≈ 7 days |
|---|---|
| ~97% cleared (5 half-lives) | ≈ 35 days |
| Typical route (published research) | SubQ · weekly |
Source: PubMed 29915923 (semaglutide clinical pharmacokinetics)
Frequently asked
How long does Semaglutide stay in your system?
With a half-life of ≈ 7 days, roughly 97% of a single Semaglutide dose is cleared after five half-lives — about 35 days. Repeated dosing accumulates and takes correspondingly longer to clear.
What does a ≈ 7 days half-life mean in practice?
Every 7 days, the remaining amount halves: 100% → 50% → 25% → 12.5%, and so on. The curve above plots exactly this decay for a single dose.
Where does this Semaglutide half-life number come from?
PubMed 29915923 (semaglutide clinical pharmacokinetics). We cite a primary source for every half-life we publish and version every change.
Related: Semaglutide reconstitution calculator · Semaglutide dose charts
Guides mentioning Semaglutide
See your own estimated levels
The Zyra Labs app plots this curve from the doses you actually log — accumulation, overlaps, and all — on your device, free to start.
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