Introduction -- Part I: Clinical evidence in support of herbal and nutritional treatments for anxiety: Herbal Anxiolytics with sedative actions -- Adaptogens -- Cognitive Anxiolytics -- Nutritional-based Nutraceuticals -- Treatments for comorbid anxiety and mood disorders -- Part II: Traditional Treatments in Need of further study: Plant-based Psychotropics -- Other Potential anxiolytic Phytotherapies -- Part III: Clinical Perspectives and Case Studies -- Generalized Anxiety Disorder (GAD) and Panic -- Obsessive Compulsive Disorder -- Comorbid Anxiety and Depression -- Appendix: Herb-drug Interactions table.