Most people are familiar with herbal remedies such as Echinacea, Ginseng, Gingko Biloba, and St. John’s Wort. Chinese herbal medicine has over 300 substances in its pharmacopia. Most herbs are derived from roots, barks, leaves, seeds and flowers. They may undergo processing by roasting, drying, or baking to increase their healing properties. They may be cooked into teas, processed into pills or dried into powdered granules. To create specific energetic effects to the body, multiple herbs are combined into formulas. Each patient receives a formula created specifically for his or her individual condition. Herbology is a complex science that requires many years of study, and herbologists must pass a rigorous national board examination.