There are many things that can influence an immune system. Whether you re handling stress and want to stay healthy or if you re simply wanting something on hand to help strengthen your immune system echinacea will help support your body?s defenses in the face of immune challenges. Echinacea contains compounds called RxA Factors which represent the alkylamide fractions known as isobutylamides. RxA Factors are found in the roots of E. angustifolia and purpurea and also in the mature ripe seed of E. purpurea. RxA Factors help maintain a healthy inflammatory response. RxA Factors support the tissues of the sinuses and throat that are exposed to airborne stressors and help support a challenged immune system. From seed to shelf Gaia is deeply committed to the purity integrity and potency of each product. Since Gaia Herbs was just a seedling in 1987 we have focused on connecting people plants and the planet to create healing. We use only organic methods to cultivate more than 6.5 million plants each year.