Quercetin (Capers/Sophora)
Sophora japonica / Capparis spinosa
Quercetin is one of the most studied flavonoids in cancer research with activity documented against breast, prostate, colon, lung, ovarian, and pancreatic cancers. It inhibits cancer cell proliferation, induces apoptosis, prevents metastasis, and acts as a potent senolytic (clearing senescent 'zombie' cells that drive cancer). It synergises powerfully with dasatinib (a cancer drug) as a senolytic combination.
Medicinal Properties
Cancer Types Studied
Recommended Dosage
500–1000 mg quercetin phytosome daily (superior bioavailability).
Preparations
Quercetin Phytosome Capsules
500–1000 mg quercetin phytosome (Quercefit or similar) daily — 20x better absorbed than standard quercetin.
High-quercetin Foods
Capers (highest food source), red onion skin, lovage, and elderberries consumed daily.
NIH / PubMed Research
Links open on PubMed (National Library of Medicine). Research is ongoing — results may not reflect clinical use.
Cautions & Interactions
- May interact with numerous medications (quinolone antibiotics, cyclosporine)
- High doses may affect thyroid function
- May potentiate the effects of tamoxifen
- Take away from medications that are P-glycoprotein substrates
Related Herbs
Informational only. Not medical advice. Consult your healthcare provider before use.