How long you can drive after taking Patchouli Zhengqi Shui depends on the metabolism of alcohol in the body and varies from person to person. Generally speaking, it is usually recommended to drive after an interval of 10-20 hours. Patchouli Zhengqi Shui contains 40%-50% ethanol (alcohol), and it is not possible to drive within a short period of time after using the medicine. Exactly how long you can drive is determined by the metabolism of alcohol in the body, due to the differences in the metabolism of each person’s body, the specific time can not be generalized, in general, the majority of patients need to be separated from 10-20 hours and above. Pouli Xiang Zhengqi Shui has the effect of regulating qi and zhong (regulating the qi of the spleen and stomach to make the functions of the spleen and stomach smooth), relieving the surface and resolving dampness (relieving the evil qi of external sensation and dispelling the dampness in the body), and it is mainly used for the internal injury of dampness stagnation (the stagnation of dampness in the body caused by diet that is too cold and chilly, etc.), summer injury of summer dampness (the human body is easy to be invaded by heat and dampness in the summer), the external sensation of wind-cold that leads to the common cold, and the gastrointestinal cold. Symptoms of colds treated with this medicine may include headache and heaviness, chest and diaphragm constriction, distension and pain in the epigastrium (stomach and abdomen), vomiting and diarrhea, etc. Some patients may experience nausea, vomiting and diarrhea. Some patients may experience side effects such as nausea, vomiting, and itchy skin rash. Because it contains alcohol, it should not be used with cephalosporin, metronidazole, tinidazole and other drugs; it is forbidden for those who are allergic to alcohol; it is not advisable to take tonic Chinese medicine at the same time during the period of taking the medicine, and so on. If there is a need to drive, you can take Huo Xiang Zheng Qi Liquid, which does not contain alcohol. If there is any discomfort, please consult a doctor in time and use the medicine under the guidance of a professional Chinese medicine practitioner.