Herbal Constituents: Foundations of Phytochemistry by Lisa Ganora. A Holistic Approach for Students and Practitioners of Botanical Medicine. Herbal Constituents is a popular textbook on herbal phytochemistry for natural health practitioners used by schools and universities worldwide. Lisa brings clinical herbalism and phytochemistry together in an accessible and practical way, with chapters on synergy & variability, solubility & extraction, and the categories of active constituents in commonly used herbs and extracts. She founded and directed the Colorado School of Clinical Herbalism until 2020, and now focuses on teaching, consulting, formulation & product development. Lisa's current Herbal Education Center, Elderberry's Farm, is located in the Rocky Mountain town of Paonia, Colorado.