If there is any adverse reaction after the use of levofloxacin, it should be treated symptomatically, for example, if there is nausea and discomfort in the stomach, you can use gastrofloxacin to stop the vomiting, and you can also use drugs to inhibit the secretion of gastric acid and protect the gastric mucosa. If the use of levofloxacin leads to allergic conditions, the use of this drug should be stopped immediately, and some anti-allergy drugs, including oral loratadine, cetirizine, or intravenous use of calcium gluconate and dexamethasone and other drugs. Levofloxacin may also cause liver and kidney damage, so it is important to stop using this antibiotic immediately, and to give some liver and kidney protective treatment. The use of levofloxacin in some middle-aged and elderly patients may lead to the emergence of psychoneurological symptoms, such as drowsiness, sleep reversal and so on, can be given the appropriate sleep aid drugs to help adjust sleep.