Fisetin

1 brand compared · cheapest first

Life Extension

Bio-Fisetin

100 mg fisetin · 30 capsules

$11.25for 30 doses

$0.375per dose

$0.00375 / mg

Bio-Fisetin uses galactomannans from fenugreek seed for absorption. For senolytic pulse protocol (1500mg × 2 days/month), this size doesn't work — need bulk fisetin. LE also has Senolytic Activator (B07JN5RDYZ, $20.25/36 caps) — fisetin + quercetin + apigenin combo.

Also worth a look

Doctor's Best High Absorption Fisetin

Thorne and Pure Encapsulations don't carry standalone fisetin. **For senolytic pulse dosing (1500mg × 2 days/month)**: Doctor's Best High Absorption Fisetin (Novusetin patented form, 100mg/cap, ~$25/30 caps — would need 15 caps for a 1500mg pulse, $12 per pulse day). Pure Encapsulations Bio-Enhanced Fisetin if introduced. Bulk fisetin is cheap if you want the pulse protocol — Nootropics Depot or Pure Rawz.