extracts of astragalus root include diverse phytochemicals, such as saponins and isoflavone flavonoids, which are purported in traditional practices to increase lactation in nursing mothers. there is no valid clinical evidence to indicate such use is effective or safe for the mother or infant. dietary supplement products containing astragalus extracts may not have been adequately tested for efficacy, safety, purity or consistency. the root extracts of astragalus may be used in soups, teas or sold in capsules.