Select a peptide to see its reported half-life and an approximate concentration-decline chart — plus what half-life does and doesn't tell you about duration of effect.
Tirzepatide
1 of 1 selected
Tirzepatide.
Reported half-life: ≈ 5 days (≈ 120 hours, reported in PK studies)
Textbook exponential model — time since administration vs. approximate concentration remaining.
Half-lives elapsed
Time elapsed
Approx. remaining
1
5d
50.0%
2
10d
25.0%
3
15d
12.5%
4
20d
6.3%
5
25d
3.1%
Half-life describes how quickly blood concentration falls — not how long a biological effect lasts. Effects that work through receptor sensitization, gene expression, or tissue remodeling can persist long after the compound is undetectable, while others fade faster than the curve suggests. Treat half-life as one pharmacokinetic fact among many.
