An imbalance between myocardial functional requirements and the capacity of the coronary vessels to supply sufficient blood flow. It is a form of MYOCARDIAL ISCHEMIA (insufficient blood supply to the heart muscle) caused by a decreased capacity of the coronary vessels.

The recommended herbs are:

• Radix polygoni multiflori,
• Radix rehmanniae,
• Radix ginseng,
• Radix achyranthis bidentatae,
• Cortex moutan,
• Fructus corni,
• Radix angelicae sinensis, etc.