Quercetin is a natural pigment present in many fruits, vegetables and grains. It has antioxidant properties and belongs to a subgroup of polyphenols called flavonoids. It is estimated that the average person consumes 10–100 mg of it daily through food sources such as onions, apples, capers, berries, broccoli, citrus fruits, cherries, coffee, grapes, green tea, and red wine.
Important to note, is that the amount of quercetin in foods may depend on the conditions in which the food was grown. As such, in order to optimize bioavailability and functionality, we have made our own proprietary blend of quercetin using three different ingredients from two different plant sources: the pagoda tree, and onions.