Guizhi, a Chinese herbal medicine, has a sweet taste, can relieve exterior syndrome by activating yang, and has a gentle sweating effect. It has the effects of warming and dredging meridians, expelling wind and dispelling cold, promoting arthralgia and relieving pain. It is often used for wind-cold common cold, epigastric cold pain, blood-cold amenorrhea, phlegm retention, edema, palpitation, etc. It is also used for wind-cold-dampness arthralgia and limb joint pain with blocked meridians. It is suitable for wind-cold symptoms, but not for warm diseases. It is not suitable for warm diseases, excessive fire due to yin deficiency and hemorrhage.

Among the ancients, Zhang Zhongjing was the best at using Guizhi as medicine. In Treatise on Febrile Diseases, there were many prescriptions named after Guizhi, and there were 43 places where Guizhi was used, ranking second after Glycyrrhiza uralensis. It can be seen that the ancients had multiple uses for Guizhi. What is Cinnamomum cassia twig? In fact, Cinnamomum cassia twig is a dry twig with long oval shape and many branches, and its surface is reddish brown to brown. It has a special aroma, slightly sweet and pungent, and the genuine cassia twig is Guangxi cassia twig.

Guizhi has been used as medicine for a long time. As early as the Eastern Han Dynasty, in Treatise on Febrile Diseases, there were as many as 38 prescriptions of Guizhi, and their effects were different with different compatibility. It is recorded in Shennong's Classic of Materia Medica: "Mu Gui tastes pungent and warm, and the main qi is reversed, and the qi and larynx are blocked, so it can vomit and suck, benefit the joints and tonify the middle energizer." From this paragraph, it can be known that Guizhi has the functions of lowering qi, benefiting the joints and tonifying the middle energizer. This book lists it as the top grade, which can strengthen the body and protect health. It hires general practitioners for all kinds of medicines first, saying, "Treat all diseases, nourish the spirit and color." Long-term service is not old, and the face is bright, and the charm is often like a boy. " It can be seen that it is widely used.

1, dispelling cold and relieving exterior syndrome

Guizhi Xinwen Fa San has the function of dispelling cold. The role of Guizhi in ancient herbal books is recorded in dispelling cold and relieving exterior syndrome.

2. Reconcile the camp guards

"Compendium of Materia Medica" says: "Ramulus Cinnamomi can relieve muscle and go to common cold because it can protect health". "Jing Yue Quan Shu" said: "Guizhi is light in spirit, so he can watch the table and adjust the camp and guard with it.

3. Warming and dredging meridians

The medicinal part of Ramulus Cinnamomi is branches, which have the function of reaching limbs and warming meridians.

4. Warming helps yang qi

Physicians in all previous dynasties believed that Guizhi had the function of warming the yang of the five internal organs, smoothing the blood vessels and meridians, supplementing the middle energizer, and nourishing the skin.

5, benefiting liver and lung qi

Traditional Chinese medicine believes that Guizhi can calm, cut and inhibit the liver. Judging from the smell and habits of Guizhi, Guizhi is beneficial to liver and lung qi.

Ramulus Cinnamomi can promote blood circulation vigorously, which is a warm medicine. Therefore, it can't be used in the case of hot infectious diseases such as wind and temperature. For example, people with high fever and heavy pulse but unable to sweat can't use cassia twig. If you use it wrong, it will cause nose bleeding.

Patients with dry mouth, vomiting blood, coughing up blood and other internal fires should not use cassia twig. The usual dosage of cassia twig is 3g-6g, and at least 2.4g-4.5g is needed for relieving exterior syndrome. Generally, the dosage of 6g is more. In the treatment of rheumatoid arthritis, the dosage is relatively large, even reaching 30-45 grams, depending on the specific situation of patients.