Links to Published Research
Dietary Sources of Caffeic Acid*
Coffee and apples are the richest sources of caffeic acid and chlorogenic acid. Foods rich in chlorogenic acid are good sources of caffeic acid because chlorogenic acid is readily metabolized to caffeic acid in the gut.
http://jn.nutrition.org/content/131/1/66.full.pdf
Latarum® converts caffeic acid found in apples, apple products, and coffee to vital Nrf2 activators that the Nrf2 Cell Defense Pathway requires. Although other fruits and vegetables contain some caffeic acid, published research generally agrees that apples and coffee are the richest sources.