The Chinese Herbal medical texts (material medical) have been increasing in number throughout the last two thousand years. This increase has resulted from the integration of substances into the official tradition from both China's folk medicine as well as from other parts of the world. Many substances now used in traditional Chinese medicine originate in places such as Southeast Asia, India, the Middle East, and the Americas.
A herbal formula will be applied based on the diagnosis of the individual. There are classifications based upon disease, pattern, symptom complex, etiology, form of application (e.g., externally applied or internally ingested), type of medicine (gynecology, pediatrics, ophthalmology, etc.), organ, treatment strategy, and composites of the above.
Herbs may come in a raw, crystallized, pill, or liquid form.
In general herbs are very safe and easy to use. Aside from questions of toxicity, drug interaction, and prohibitions such as pregnancy and dietary incompatibilities herbal formulae address a wide variety of conditions from the common cold and allergies to kidney infections.
Our ancestors from the beginning used plants to promote a state of health and today we possess even greater understanding still, thanks to modern science.