Norfloxacin and ofloxacin are the same generation of quinolone antibiotics with similar potency and side effects.

Levofloxacin is the levofloxacin, and the main antibacterial component of of ofloxacin is on the levofloxacin, and the main side effects are not produced by the levofloxacin, which leads to the conclusion that levofloxacin's antibacterial effect is stronger than that of ofloxacin, and the side effects are weaker than that of ofloxacin.