Women should not and walnut heartwood during menstruation. Because walnut heartwood has the role of blood, drink walnut heartwood during menstruation, easy to cause an increase in menstruation, prolonged periods, and in serious cases can cause anemia. Walnut heartwood infusion as a health product is very suitable for both men and women, has a strong kidney and sperm fixing effect, in the blood and good effect. It can also be used to treat bad symptoms such as urinary urgency, frequent urination and back pain, and is a natural and healthy nutritional product. Women can drink it at ordinary times to improve sleep and relieve symptoms such as back and leg pain and cold hands and feet. Walnut Centella is suitable for most people, but pregnant women and women who are menstruating should not drink it.