Jerusalem Artichoke is the root of the plant Helianthus Tuberosus, which is closely related to the sunflower. Native to North America, these naturally sweet tubers were first cultivated by Native Americans and then brought over to areas of Europe and Asia. Jerusalem Artichokes are most commonly dried and ground into flour after harvesting. They can also be consumed as a vegetable side dish. Jerusalem Artichokes contain a significant amount of the polysaccharide inulin, a dietary fiber known to help support levels of healthy bacteria in the digestive tract, which in turn helps to alleviate constipation, boost the immune system, and support healthy blood sugar levels. They are also an excellent source of iron and protein, a good source of thiamin and potassium, and a source of vitamin C, niacin, and phosphorous. Edgar Cayce often recommended this vegetable for improving the body's healthy assimilations and eliminations. One bottle is a 16 - 50 day supply.