Peptide Half-Life Decay Visualizer
Pick any combination of peptides — see what's still active in your system on one shared timeline.
📊 Half-Life Decay Viz
Overlay multiple peptides on the same timeline. See exactly when CJC-1295 is still active while Ipamorelin has worn off — or what's still circulating from last week's tirzepatide.
Frequently asked questions
What is a peptide's half-life?+
Half-life (t½) is the time it takes for plasma concentration to fall to 50% of its peak. After 5 half-lives, ~97% has been eliminated. For peptides this typically ranges from minutes (DSIP, sermorelin, CJC-1295 without DAC) to days (semaglutide, tirzepatide, retatrutide).
Why is plasma half-life different from effect duration?+
Many peptides act on receptors or downstream pathways that persist long after plasma clearance. DSIP and Epitalon have minute-scale plasma t½ but cycled effect over days. MT-II's plasma t½ is ~33 hours but pigment effect outlasts. The chart shows plasma decay, not effect.
How do I use the multi-peptide overlay?+
Add two or more peptides — say CJC-1295 (no DAC, 30-min t½) and Ipamorelin (2-hr t½) — and watch the curves diverge. By hour 4, CJC is ~3% but Ipamorelin is still ~25%. This is why the GH stack is dosed at the same moment.
What's the difference between CJC-1295 with DAC and without?+
Without DAC: ~30 min plasma half-life — pulse dose. With DAC (drug affinity complex): ~6–8 day half-life — once-weekly. The chart includes both for direct comparison.
Solo uso educativo
Esta calculadora se ofrece con fines de investigación y educativos. Los resultados se derivan de los valores que ingresas. Verifica siempre tus cálculos y consulta a un médico con licencia antes de actuar sobre cualquier resultado.