Zhengqi water mostly refers to patchouli Zhengqi water, if meet the applicable evidence and no contraindications, menstruation patients usually can drink patchouli Zhengqi water, but need to pay attention to the precautions for the use of medication, and strictly follow the doctor’s instructions for the use of medication. Pouli Xiang Zheng Qi Shui is suitable for colds and flu caused by internal dampness stagnation (the stagnation of dampness in the body caused by too cold diet), external wind-cold, summer summer dampness (the human body is susceptible to summer heat and dampness in the summer), with symptoms of chest and diaphragm constriction, vomiting and diarrhea, distension of the epigastric region (abdomen), headache, and weight loss, etc. It is also useful for gastrointestinal type colds with the above mentioned symptoms. Since the instruction manual of the drug and other authoritative information does not specify that the drug can not be used during menstruation, so the menstruation patients who meet the applicable evidence and have no contraindications can drink patchouli Zhengqi Shui. Patchouli Zhengqi Shui may cause nausea and vomiting, dizziness and flushing, palpitations (rapid heartbeat, often accompanied by panic), itching and other side effects during the use of the drug, which contains alcohol, and can not be used with cephalosporins, metronidazole, tinidazole, ketoconazole and other medications, once there is an allergic reaction or a bisulphuric acid-like reaction, you should go to the hospital in time to consult a doctor. Patchouli is also not recommended for pregnant women, lactating women and children, is prohibited for those who are allergic to alcohol, and should not be taken with tonic Chinese medicines. Other patients must strictly follow the instructions of the doctor when using this medicine.