Pharmacokinetics, made visible

See how long it actually stays in your system

A visual half-life and clearance tool for every performance and enhancement compound. Join the community on Skool and use it free. No card, no catch.

Free to join. 18+. Education only, never dosing or sourcing.
Wolverine stack · recovery peptidesLive demo
Model
Serum concentration over time
tissue repair peptide
Doselow to high
Every
recovery and mobility
Doselow to high
Every
skin, hair and collagen
Doselow to high
Every
Dosing
Approach
3 days
8:00

Why half-life matters

One number tells you how a compound behaves over time.

Build-up and steady state

Levels climb dose after dose until what goes in equals what clears. A long half-life builds slowly to a smooth, steady level; a short one is fast on, fast off.

Swing and side-effects

Many side-effects track the peaks and troughs, not the average. Seeing the swing between doses is how you reason about timing instead of guessing.

Washout

Half-life also sets how long something lingers after the last dose, which is what matters for stacking, breaks and clearing out.

Compare on equal footing

Two compounds at the same dose behave completely differently if their half-lives differ. The visualizer makes that visible at a glance.

Inside the visualizer

What you get to model once you are in, shown here with the Wolverine peptide stack.

Concentration curves
BPC-157 TB-500 GHK-Cu
The whole blend on one timeline. Each peptide spikes at 8am and 8pm and clears before the next dose; the taller lines are the larger doses, and the wider one (TB-500) lingers a little longer.
Per-compound stability
BPC-157 swing
high
TB-500 swing
high
GHK-Cu swing
high
Peak-to-trough shows how steady each compound stays. Fast peptides swing hard between doses, which is exactly why they are split into twice-daily dosing.
Per-compound window
BPC-157 · 8am and 8pm · weeks 0 to 6
Drag each compound's start and stop to model the real run, then read how long it takes to clear after the last dose.
Dashboard
Steady-stateWashoutCalendar
BPC-157clears ~3 h
TB-500clears ~10 h
GHK-Cuclears ~3 h
Steady-state numbers, washout timing, the dosing calendar and export, all side by side.
Side-effect tracking
Log how you feel, see it against your levels
1 2
1 · Acne · day 8 2 · High blood pressure · day 19
Note a side effect as it happens and the tool drops a marker on your curve at that day, so you can see exactly what your modeled levels were doing when it started. Spot the pattern, take it to your clinician. Saved private to your device.

Use the tool free

Join the free Half-Life Lab group on Skool to unlock the visualizer and the free Foundations courses.

Free · join the community
  • Model how any compound rises, peaks and clears
  • Peptides, GLP-1s, supplements and hydration
  • Single-compound modeling, steady and ramping
  • Per-compound active-window sliders
  • The Foundations courses inside Skool
Get free access by joining Skool here
Half-Life Lab is an educational tool for pharmacokinetics and risk literacy. It models half-life and clearance curves only. It does not provide dosing instructions, protocols, sourcing, or where-to-buy information. You must be 18 or older. Nothing here is medical advice. Membership and payments are handled on Skool.