Astragalus 90 Veg Caps - Oregon's Wild Harvest Astragalus is made with the organic Astragalus herb, premium grade root, providing long term immune support. This supplement primarily features the fully mature primary tap roots of the plant, which Chinese practices believe to provide greater benefit than smaller, immature roots. Astragalus is known to be safe and gentle, ideal for long term use to strengthen the body's defense system. Gluten free. Non-GMO capsules.