Patchouli Zhengqi Shui has the efficacy of relieving the surface and resolving dampness (relieving the evils of external sensation and getting rid of dampness in the body), regulating qi and harmonizing the middle (regulating the qi of the spleen and stomach to make the functions of the spleen and stomach smooth), and it can be used to treat heatstroke and other illnesses. According to the instructions for use of the drug, children with heatstroke can use the drug, but it should be taken under the guidance of a physician. Haoxiang Zhengqi Shui is composed of Cangzhu, Chenpi, Houpu, Angelica dahurica, Poria, and Dabu Pi, etc. It has the efficacy of relieving the surface and resolving dampness, regulating qi and harmonizing the middle. It can be used for colds and flu caused by external wind-cold, internal dampness stagnation (the stagnation of dampness in the body caused by too cold diet) or summer dampness (the human body is susceptible to summer heat and dampness in summer), which are characterized by headache, heaviness, chest and diaphragm constriction, epigastric distension, vomiting and diarrhea, as well as gastrointestinal colds and flu with the above symptoms. Patchouli Zhengqi Shui may cause nausea, vomiting, dizziness and other adverse reactions after taking it, and it should be noted that patients who are allergic to alcohol should not take it when using it. Children suffering from heatstroke are advised to go to regular hospitals for treatment under the guidance of professional physicians.