Source Naturals Activated Quercetin Tablets, 10 Count ACTIVATED QUERCETIN is a unique bioflavonoid derived from plant sources. In human cell culture studies, quercetin has been shown to inhibit histamine release. Additional research needs to be conducted to confirm the effects of quercetin, if any, in humans. Bromelain is a pineapple enzyme that may assist the body in times of stress. Magnesium ascorbate is a buffered (non-acidic) form of vitamin C that helps support the immune system. Features: Source Naturals Activated Quercetin Tablets, 10 Count Source Naturals 10 Count Product Details: Product Dimensions: 5 x 6 x 2 inches Shipping Weight: 0.8 ounces Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues. International Shipping: This item is not eligible for international shipping. Learn More UPC: 021078002918 Item model number: 021078002918