---
title: "Fisetin vs Quercetin Phytosome Half-Life & Systemic Washout Calculator (2026 Pharmacokinetics) | Nutrition Research Labs"
source_url: "https://nutritionresearchlabs.com/half-life/fisetin-vs-quercetin-senolytic-zombie-cell-audit"
canonical_url: "https://nutritionresearchlabs.com/half-life/fisetin-vs-quercetin-senolytic-zombie-cell-audit"
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description: "Interactive Fisetin vs Quercetin Phytosome plasma half-life plotter (Fisetin: 3-4 hours; Quercetin: 11-28 hours). Calculate steady-state Cmax/Cmin accumulation, split-dose curves, and 5-half-life 97% washout dates."
rfc_compliance: "RFC 9110 / RFC 9309 / RFC 9421"
version: "1.1.0"
release_version: "v1.1.0-parity-v20"
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> **Canonical Source:** [https://nutritionresearchlabs.com/half-life/fisetin-vs-quercetin-senolytic-zombie-cell-audit](https://nutritionresearchlabs.com/half-life/fisetin-vs-quercetin-senolytic-zombie-cell-audit)
>
> *Interactive Fisetin vs Quercetin Phytosome plasma half-life plotter (Fisetin: 3-4 hours; Quercetin: 11-28 hours). Calculate steady-state Cmax/Cmin accumulation, split-dose curves, and 5-half-life 97% washout dates.*

## Elimination Kinetics & 97% Washout Benchmark for Fisetin vs Quercetin Phytosome

- **Documented Elimination Half-Life (T½):** Fisetin: 3-4 hours; Quercetin: 11-28 hours
- **Steady-State Equilibrium Window:** Achieved after 4.0 to 5.0 consecutive half-lives of regular administration.
- **97% Systemic Washout Threshold:** Requires 5.0x elimination half-lives following final dose administration.
- **Optimal Administration Schedule:** With fat-rich breakfast during pulsed 2-day cycles

---

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