Dietary supplement. Activated Quercetin is a unique bioflavonoid derived from plant sources. In human cell culture studies, quercetin ahs 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) from of Vitamin C that helps support the immune system. (These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.) Suitable for vegetarians. Contains no yeast, dairy, egg, gluten, corn, soy, or wheat. Contains no sugar, starch, salt, preservatives or artificial color, flavor, or fragrance.