This product is a non-steroidal anti-inflammatory drug. Its analgesic, anti-inflammatory and antipyretic effects work by inhibiting the synthesis of prostaglandins.

This product is a sulfonamide antibiotic that acts competitively with para-aminobenzoic acid (PABA) on dihydrofolate synthase in bacteria, inhibits bacterial folate synthesis, reduces the amount of tetrahydrofolate, thereby hindering bacterial nucleic acid synthesis and inhibiting bacterial growth and reproduction. It has antibacterial effects on gram-positive and gram-negative bacteria such as hemolytic streptococci, Neisseria meningitidis, and Staphylococcus.

This product has a broad-spectrum antibacterial effect and strong antibacterial effect. It has strong antibacterial activity against most Enterobacteriaceae, such as Escherichia coli, Klebsiella, Proteus, Salmonella, Shigella, and Gram-negative bacteria such as Haemophilus influenzae, Legionella pneumophila, and Neisseria gonorrhoeae. It also has antibacterial effects on Gram-positive bacteria such as Staphylococcus aureus, Streptococcus pneumoniae, Streptococcus pyogenes, and Mycoplasma pneumoniae and Chlamydia pneumoniae, but has poor effects on anaerobic bacteria and enterococci. Its mechanism of action is to inhibit the activity of bacterial DNA gyrase, prevent the synthesis and replication of bacterial DNA, and cause bacterial death.

This product is a fluoroquinolone antibacterial drug with a broad-spectrum antibacterial effect, especially high antibacterial activity against aerobic Gram-negative bacteria. It has good antibacterial activity against the following bacteria in vitro: most bacteria of the Enterobacteriaceae family, including Citrobacter, Enterobacter cloacae, Enterobacter aerogenes and other Enterobacter species, Escherichia coli, Klebsiella, Proteus, Salmonella, Shigella, Vibrio, Yersinia, etc. Norfloxacin also has antibacterial activity against multi-drug resistant bacteria in vitro. It also has good antibacterial effects on penicillin-resistant Neisseria gonorrhoeae, Haemophilus influenzae and Moraxella catarrhalis. Norfloxacin is a bactericide that acts on the A subunit of bacterial DNA helicase, inhibiting DNA synthesis and replication, leading to bacterial death.