Half-Life Visualizer
Compare compound concentration decay over time
Understanding half-life
After 1 half-life, 50% remains. After 2 half-lives, 25%. After 5 half-lives, less than 3.2% — effectively cleared. Compare up to 5 compounds on the same chart.
Or load a popular stack:
Active Compounds
BPC-157
t½ = 4h
Or enter custom values
Starting dose
Time to 50% clearance
Concentration Decay (% Remaining)
50% left
4.0h
25% left
8.0h
10% left
13.3h
~3% left
20.0h
How we verify half-life data
All half-life values are sourced from peer-reviewed pharmacokinetic studies and clinical trial publications. Peptide half-lives come from published phase I/II trial data and manufacturer PK profiles. Nootropic half-lives reference clinical pharmacology literature and drug monographs.
Values shown as ranges (e.g. "4-6 hours") are averaged for visualization. The raw source value is displayed in each compound's milestone card. For compounds where human PK data is limited, animal model data is used and noted accordingly.
Frequently Asked Questions
Free 2026 Peptide Cheat Sheet — 50 pages, PDF
Dosing, reconstitution, stacks, half-lives, and vendor trust tiers. The reference we wish we had on day one.
