Is there a flavonoid supplement that is good to take?

Univ of California, Berkeley's school of public health note: flavonoids become dangerous at the high doses available in some supplements. Dietary intake is best source. Develop meal plan rich in whole foods containing nutrients including flavonoids and you will enjoy better health. Sources: apples, apricots, blueberries, pears, raspberries, strawberries, black beans, cabbage, onions, parsley, pinto beans, tomatoes.