Fisetin vs Quercetin: What the Evidence Actually Shows About These Two Flavonoids
Fisetin and quercetin are both flavonoids studied as senolytics, but their evidence profiles differ significantly. Here is an honest comparison.
What Is Fisetin
Fisetin Research History: From Plant Pigment to Longevity Laboratories
Trace fisetin’s journey from a 19th-century plant dye to a modern senolytic candidate studied in aging and longevity research. Evidence-based overview.
Fisetin in Food: Natural Sources, How Much You Get, and Why Supplements Exist
Fisetin occurs naturally in strawberries, apples, and onions—but in small amounts. Learn what foods contain it and why researchers use supplements.
Fisetin Bioavailability: Why Oral Absorption Is Low and What Formulation Science Is Doing About It
Fisetin’s oral bioavailability is poor due to low solubility and rapid gut metabolism. Learn why absorption is limited and what formulation science offers.