Eucommia is listed the superior herb in Classic of Materia Medica and Compendium of Materia Medica
In traditional Chinese medicine, herbs that have no toxic or side effects are called "supreme herbs".
The ancients classified Chinese medicinal herbs into three categories: superior, medium, and inferior.
Superior herbs nourish life
Medium herbs nurture vitality
Inferior herbs treat diseases
Superior herbs are primarily used for health maintenance, while medium and inferior herbs are combined based on the principle of "sovereign, minister, assistant, and envoy" to formulate prescriptions that treat illnesses.
In Shennong’s Classic of Materia Medica and Compendium of Materia Medica, it is written:
"Superior herbs nourish life in accordance with nature. They are non-toxic and can be taken frequently and for long periods without harming the body. Those who wish to become lighter, boost energy, and prolong life should follow the principles of the superior category."
The famous physician Tao Hongjing of the Northern and Southern Dynasties stated:
"The nature of superior herbs can also dispel diseases. However, their effects are gentle and substantial, rather than immediate. With long-term use, they bring great benefits over time."
Most other Chinese medicinal herbs have some degree of toxicity. This shows that the ancients deeply understood the essence of using Chinese herbs for both health preservation and disease treatment.
