Gladstar R. Herbs for Reducing Stress and Anxiety. Storey Books, 1999. Healing Arts Press, 1993. The Subscription Dept. Private research firms also perform this service.
Libraries can provide citations and abstracts of articles, and also full-text document retrieval.
HRF is a specialty library with more than 120,000 articles on file about the clinical research pharmacology, toxicology, chemistry, horticulture, analysis, and history of herbs used in food and for health care. The HRF research department provides custom botanical research, abstracts of scientific articles on herbs, full-text documents, and online research services. It has many rare and antique holdings as well as one of the largest collections of pharmacopoeias in the world. The National Agricultural Library provides extensive literature searches and bibliographies on various herb-related topics, offering current information to growers, medicinal herbalists, marketers, and others.