Levoxyl generally refers to levofloxacin, which belongs to the quinolone class of antimicrobials. Levofloxacin is a quinolone antimicrobial drug for respiratory infections, urinary tract infections, intestinal infections, soft tissue skin infections, and other diseases caused by sensitive bacteria such as Escherichia coli, Shigella spp, Salmonella spp, Streptococcus pneumoniae, and other bacteria. The common dosage forms of levofloxacin include levofloxacin tablets, levofloxacin eye drops, levofloxacin injection and so on. Adverse reactions such as diarrhea, nausea, vomiting, dizziness, and rash can occur in some patients after applying levofloxacin. Levofloxacin is prohibited if the patient is allergic to quinolones or is a pregnant and lactating woman, or a patient under 18 years old. During the medication period, patients should pay attention to drink more water to promote the full play of drug effect and avoid the occurrence of crystalluria. Avoid sun exposure after taking the drug. It is recommended that patients apply levofloxacin under the guidance of a physician, and should not use the drug on their own to prevent aggravation of the condition. If the symptoms are not relieved or aggravated after using the drug, the drug should be discontinued and seek medical advice.