Cardiovascular patients are allowed to take levofloxacin hydrochloride tablets if they meet the indications of levofloxacin hydrochloride tablets. The drug belongs to the quinolone antibiotic group and has antibacterial properties. The drug can be used to treat infections caused by sensitive bacteria, such as pneumonia, sinusitis, bronchitis skin tissue infections, prostatitis, urinary tract infections and so on. The drug should be contraindicated in people who are allergic to quinolones, pregnant women and patients under 18 years of age. The use of this drug can cause such adverse reactions as disability, tendinopathy and tendon rupture, prolongation of the QT period, anaphylactic reactions, central and peripheral neuropathy, Clostridium difficile-associated diarrhea, dysglycemia, phototoxicity or photosensitivity, worsening of myasthenia gravis, hepatotoxicity, the development of drug-resistant bacteria, aortic coarctation and aortic aneurysm. It is important to be careful when using this medicine, if any of these adverse reactions occur, the medicine should be stopped immediately and a hospital visit should be made. This medicine is recommended to be used under medical supervision.