ALLERGIES: Provides nutritional support for individuals with allergies* HISTAMINE BALANCE: Helps stabilize mast cells that store and release histamine* ANTIOXIDANT: An antioxidant flavonoid* OPTIMAL ABSORPTION: Quercetin bound to sunflower-sourced phosphatidylcholine for optimal absorption* FREE FROM: Every Thorne product is made with the purest possible ingredients – without gluten or other major allergens (eggs, tree nuts, peanuts). This product also contains no soy, dairy, yeast, shellfish, or fish.