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ASTRAGALUS - The herb is promoted to kill cancer cells, reduce the toxic effects of chemotherapy, help heal burns, protect against heart disease, fight the common cold, and help improve overall weakness. Proponents also claim astragalus can stimulate the spleen, liver, lungs, circulatory, and urinary system, and help treat arthritis, asthma, and nervous conditions. They further claim it can lower blood sugar levels and blood pressure.