Description_x000D_ Packaging_x000D_ 5, 10 mg in glass bottle_x000D_ Biochem/physiol Actions_x000D_ Tangeretin is a flavonoid found in the peel of citrus fruits where it most likely provides natural resistance to fungi. Tangeretin has been shown to counteract tumor promoter-induced inhibition of intercellular communication and to inhibit cell proliferation in several cancer lines.