The difference between norfloxacin and levofloxacin can be analyzed in terms of antimicrobial spectrum, targeting the site of infection, dosage form and adverse reactions.
1. Different antibacterial spectrum: Norfloxacin only targets aerobic gram-negative bacilli; levofloxacin can target gram-positive and gram-negative bacilli, Mycobacterium tuberculosis and non-tuberculosis bacilli, in addition to mycoplasma, chlamydia and legionella.
2. Different infection sites: Norfloxacin is generally limited to gastrointestinal and urinary tract infections; Levofloxacin can be used for infections in almost every system of the body.
3. Different dosage forms: Norfloxacin is only available in oral dosage form; Levofloxacin is available in oral, intravenous and eye-drop dosage forms.
4. Different adverse reactions: the adverse reactions of norfloxacin are mainly gastrointestinal adverse reactions, such as nausea, vomiting, abdominal pain and diarrhea, etc.; the adverse reactions of levofloxacin are mainly fever, headache, vision loss and pharyngitis.
It is recommended to choose the appropriate drug under the guidance of specialists; in addition, the application of the above drugs have certain risks, and patients need to get the guidance of specialists.