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Quercetin Complex Vegetable Capsules Solgar’s Quercetin Complex includes the important bioflavonoid Quercetin in a synergistic formula with Ester-C® Plus and Bromelain to provide unique antioxidants as well as immune health support. Quercetin is found in onions and other foods. It possesses antioxidant properties which help to stabilize cell membranes. Ester-C® Plus provides a patented, pH neutral (non acidic), form of vitamin C that is gentle on the stomach. Ester-C® Plus offers the additional....