Promotes a Healthy Body. Standardized Herbal Supplement. Astragalus root (Astragalus membranaceus) a member of the pea family is considered one of the most important tonic herbs in Chinese medicine due to its ability to invigorate vital energy (qi). Astragalus has been shown to have a beneficial role in maintaining wellness. Standardized Extracts are guaranteed to contain a specific quantity of a known marker compound and are laboratory tested to insure consistent potency.