Nature's Sunshine Echinacea Goldenseal combination is quite effective for supporting the immune system, as both herbs are considered "natural antibiotics".  Nature's Sunshine Echinacea Goldenseal combines two species of Echinacea (Echinacea Purpurae and Echinacea angustifolia) that support normal functions of clearing toxins and maintaining wellness. Goldenseal root contains the powerful alkaloids berberine and hydrastine that support the immune system by promoting the flow of antibody-laden mucous which may help to fight infection and soothe irritated and inflamed tissues. Due to its actions on the mucous membranes Goldenseal is recommended to be used in small doses for short periods of time.