This fully updated Third Edition provides the latest worldwide research on every herbal agent in common use today. Its monographs are based on the results of clinical studies, examining the existing evidence and comparing it with manufacturer's claims. Each monograph covers the most commonly known generic name, synonyms, common trade names, common forms, source, chemical components, actions, reported uses, dosage, adverse reactions broken down by body system, interactions, contraindications and precautions, special considerations, analysis, and references. New to this edition are 15 new herbal monographs and Patient Counseling Tips in a quick reference format. Appendices include potential drug herb interactions, potentially unsafe plants, herbal agents resource list, and an herbal agent information sheet.