Astragalus is helpful in stimulating the immune system. This herb can reduce the frequency and duration of the common cold. Astragalus has the ability to increase the natural production of interferon, a substance that assists the body in combating viruses. Astragalus also increases the efficiency of macrophages, which are cells that destroy viruses.

Astragalus has the unique ability of stimulating NK(natural killer cells) this may be helpful to those with lupus.

Male infertility may be treated with this herb becasue astragalus helps to increase sperm activity.

Astragalus may be efective in preventing the depletion of white blood cells during chemotherapy.