Citron has the efficacy of resolving phlegm, relaxing the middle and regulating liver qi (regulating stagnation of liver qi), which can improve the symptoms of stagnation of liver and stomach qi, phlegm and coughing, and epigastric (abdominal) plumpness (stomach distension and discomfort), and is often used to make a decoction of it. Citron is pungent, bitter, acidic, warm in nature, and belongs to the liver, spleen and lung meridians. It has the effects of dredging the liver and regulating qi (regulating stagnation of liver qi), broadening the middle, and resolving phlegm, and can treat distension and pain in the chest and ribs of the liver and the chest, and is often used in combination with Chai Hu, Yujin, and Buddha’s Hands. In addition, such as the treatment of stagnant spleen and stomach qi of the epigastric (abdomen) distension, belching (hiccups) acid swallowing (the stomach upward oral pharyngeal acid swallowed), vomiting and less food, citron can be used with wood, sand, patchouli and so on. To treat phlegm, cough and chest congestion, it is often combined with ginger, hemixia and poria. Pregnant women should take this product with caution. When discomfort occurs, you should consult a doctor in time, and choose medication under the guidance of physician’s diagnosis, not self-medication, so as not to delay the condition.