Willow J. H. Liu is the owner of 21st Century Herbs & Health, Inc. Dr. Liu has been working on traditional Chinese herbs and Western herbal medicines for twenty-five years. She has research experience on herbs using the methodologies of modern chemistry, biology, and pharmacology in China, Germany, and the United States. Dr. Liu has also worked in both product development and clinical application of herbal medicines. Her papers on isolation and identification, chemical analysis, bioassay screening, animal studies, and studies of the mechanisms of herbal medicines have been published in different international journals.