Quercetin is a natural bioflavonoid found in many foods and herbs. It blocks tumor export of lactate, resulting in a lethal drop in tumor pH triggering pH-dependent cancer cell death. It causes cancer cells through many different pathways.
Quercetin also inhibits inflammation and blocks cancer growth pathways.It binds to type II estrogen receptors in breast, colon, ovarian, melanoma, leukemia, and meningeal cancer cells, inhibiting growth.
Quercetin also inhibits the proliferative affecting breast cancer cells of environmental Xeno estrogens.
Quercetin interferes with the Porter system IN pump, also called P glycoprotein, which can pump drugs right out of the cancer cells. Giving quercetin with many chemo drugs helps hold enough chemo inside the cancer cells to overcome multidrug-resistant MDR to help kill your cancer.
It also blocks epidermal growth factors and reduces different cancel signaling pathways. It has been shown to increase the effectiveness of radiation and chemotherapy.