Natures Plus Quercetin Plus with Vitamin C & Bromelain is a synergistic formula of quercetin , a bioflavonoid with powerful antioxidant action, with vitamin C and bromelain . Quercetin is a powerful antioxidant . BENEFITS Specifically, quercetin is a bioflavonoid found in many fruits and vegetables. It neutralizes harmful radicals that cause cell damage and, in addition, improves the absorption of Vitamin C. Instructions for use 2 tablets per day to be taken after meals. ingredients Dicalcium phosphate, microcrystalline cellulose, stearic acid, vegetable cellulose, silicon dioxide, magnesium stearate, hydroxypropyl methylcellulose and pharmaceutical glaze.