Recent studies have indicated that the main chemical compositions of Astragalus membranaceus include Radix astragali polysaccharide,saponin categories and amino acids.The experimental studies have shown that Astragalus membranaceus can improve immune function;enhance resistance to oxidation;exert anti-radiation and anticancer effects;protect cardiovascular,liver,kidney,lung,and brain cells;improve memory;relax blood vessel smooth muscle;possess the hormone-like,antibacterial and antiviral effects;exert the ...