Patchouli Zhengqi Compound is mainly used for the treatment of summer-dampness colds, malignant cold (fear of cold) and fever, and distension and pain in the epigastrium (abdomen). The main ingredients of Huo Xiang Zheng Qi Compound are patchouli, Angelica dahurica, Pericarpium Citri Reticulatae, Magnolia Officinalis and other traditional Chinese medicines, which have the efficacy of relieving surface dampness (relieving the evil qi of the external senses and dispelling dampness within the body), regulating qi and neutralizing the middle (regulating the qi of the spleen and stomach and making the functions of the spleen and stomach smooth), and are mainly used for the treatment of summer-dampness colds, headache and chest tightness, or malignant cold and fever, vomiting and diarrhea, and epigastric (abdominal) distension and pain, and other conditions in the clinic. The adverse reactions and contraindications of Huo Xiang Zheng Qi Synthesis are not clear at present, but it is not advisable to take tonic Chinese medicines at the same time during the administration of the medicine. It should also be noted that, during the use of light diet, after three days of taking the drug symptoms did not improve, or vomiting and diarrhea obvious, and other serious symptoms should go to the hospital for medical attention. It is recommended to use Huo Xiang Zheng Qi Synthesis under the guidance of a doctor to avoid adverse consequences.