Echinacea and flavonoid combination Contains ingredients traditionally used to support optimal respiratory health, and immune health* Contains a unique blend of Echinacea root, grapefruit fruit extract, green tea leaf, and peppermint leaf Citrigen contains -Echinacea angustifolia , which is traditionally used to support upper respiratory health and immune function. In one study, supplementation with 100 mg of Echinacea root for four weeks supported immune function.* Ingredients: Echinacea Root, Grapefruit Seed Extract, Green tea leaf std. extract, Peppermint Leaf Allergens: Vegan