The herbs in this formula are combined to help alleviate symptoms in the sinuses. Goldenseal and Oregon Grape are effective against infections of the mucous membranes, including the mouth, throat, and sinuses. Elder Flower works as an expectorant to relieve mucus and to reduce inflammation. Astragalus Root helps strengthen the immune system. Horseradish Root has an anti-biotic action recommended for respiratory infections. It works as a nasal and bronchial dilator, and clears the nasal passages to alleviate sinus problems. Eyebright is used with excellent results for any problems relating to the mucous membranes.