It is converted into pyridoxal phosphate in red blood cells and acts as a coenzyme in various metabolic functions of proteins, carbohydrates, and lipids. It is also involved in the conversion of tryptophan into niacin or 5-hydroxytryptamine.

Sedative and hypnotic, protect heart rhythm, prolong the sleep time of animals with sodium pentobarbital, tolerate hypoxia, promote the phagocytic function of mononuclear phagocytes, and have a protective effect on arrhythmias caused by aconitine

Quinolone antibiotics have a broad antibacterial spectrum and strong antibacterial effect. They mainly inhibit bacterial DNA gyrase activity and inhibit bacterial DNA replication. They have good antibacterial effects on most Enterobacteriaceae (such as Klebsiella pneumoniae, Proteus, Salmonella typhi, Shigella, some Escherichia coli, etc.), some Staphylococci, Streptococcus pneumoniae, Haemophilus influenzae, Pseudomonas aeruginosa, Neisseria gonorrhoeae, Chlamydia, etc.

Levofloxacin is the L-isomer of ofloxacin (racemate) and is a quinolone antibacterial drug. Its mechanism of action is to inhibit topoisomerase IV and DNA gyrase (topoisomerase II) required for bacterial DNA replication, transcription, repair and recombination. It has antibacterial effects on a variety of Gram-negative and Gram-positive bacteria, and has bactericidal activity when the concentration is equal to or slightly higher than the inhibitory concentration.

Levofloxacin is the L-isomer of ofloxacin (racemate) and is a quinolone antibacterial drug. Its mechanism of action is to inhibit topoisomerase IV and DNA gyrase (topoisomerase II) required for bacterial DNA replication, transcription, repair and recombination. It has antibacterial effects on a variety of Gram-negative and Gram-positive bacteria, and has bactericidal activity when the concentration is equal to or slightly higher than the inhibitory concentration.