Astragalus has been used by practitioners of traditional Chinese medicine for at least 2,000 years. Anti-oxidants found in the dried root of Astragalus membranaceus are purported to relieve stress, support the immune system and protect against cell damage, according to the University of Maryland Medical Center.
Astragalus is a type of legume that is alternately called Huang Qi, goat's horn, green dragon, Beg Kei and milk vetch. It is one of the most commonly used herbs in the Chinese pharmacopoeia. In China, it is used as a tonic for diabetes and kidney inflammation, says Drugs.com. Astragalus supplements may be taken as tinctures, tablets and teas.
According to the American Cancer Society, studies conducted at The University of Texas M.D. Anderson Cancer Center showed that extract of astragalus boosted the cancer-fighting properties of certain chemotherapy drugs.