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Natural Factors Quercetin capsules are enhanced with Citrus Bioflavonoids, Bromelain and Rutin. Quercetin, a popular bioflavonoid, is essential to optimize the body's use of Vitamin C. Bioflavonoids are brightly-colored substances that are found in fruits and vegetables, typically as companions to Vitamin C.
Bioflavonoids are essential for proper absorption of Vitamin C and have been shown to have antioxidant properties, increase capillary strength and keep collagen healthy.