Dietary Supplement. Immune System Support* Powdered Herb Echinacea is the world s best-known herb traditionally used to help support the body s immune defenses.* It is best to use Echinacea in eight-week cycles, separated by one-week breaks. This product is to be used in conjunction with a healthy calorie reduction and exercise program. No yeast, wheat, corn, milk, egg, soy, glutens, artificial colors or flavors, added sugar, starch or preservatives. 1-800-2-NATROL *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.