Peptide Half-Life Plotter
See how a dose accumulates to steady state and washes out. Research use only. Updated 16 July 2026.
Half-life is the number that decides dosing frequency. Pick a compound and a schedule and watch the plasma level build up, level off, and clear. A long half-life stacks up over weeks; a short one clears before the next dose.
What this does and does not model
This is a teaching model of RELATIVE plasma level: each dose is added instantly and decays by its half-life. It shows accumulation and washout correctly, but it is not a full pharmacokinetic simulation — it ignores absorption rate, distribution and individual variation, and the level is in arbitrary units, not a concentration. Animal or estimated half-lives are labelled as such.
How to read it
- The curve is relative, not a concentration. It shows how the level rises and falls in proportion to a single dose — the shape, not an absolute number.
- Steady state ≈ 4-5 half-lives. That is why a weekly compound keeps climbing for roughly a month before it plateaus, and why a missed dose matters more on a short half-life.
- Washout ≈ 4-5 half-lives after the last dose. Useful when switching compounds or planning a break. Longer half-life, longer tail.
Teaching tool for research use only. See our methodology for how the half-lives were sourced.