The side effects of Levofloxacin Hydrochloride include gastrointestinal reaction, impaired heart function, skeletal muscle abnormality, and kidney function abnormality. For different side effects, they can be relieved by stopping the drug and taking the drug after meals. 1. Gastrointestinal irritation: Users mainly manifest abdominal pain, nausea, vomiting, etc., which can be relieved by taking the drug after meals. 2. Impairment of heart function: Users mainly manifest palpitations, panic, if this symptom occurs, the drug should be stopped promptly. 3. Skeletal muscle abnormality: mainly manifested as abnormal development of the user’s skeletal cartilage, so minors under the age of 18 are generally prohibited from using the drug. 4. Abnormal renal function: mainly manifested as elevated creatinine level, etc., so it is necessary to drink more water during the period of taking the drug to prevent some adverse reactions to the kidneys. Levofloxacin Hydrochloride should be used under the guidance of a doctor, and if adverse reactions occur, you should seek medical attention promptly.