Norfloxacin capsule is fluoxacin, it belongs to the quinolone antibiotics, with its similar antibiotics and PPA, levofloxacin, ciprofloxacin, lomefloxacin, etc.. Precautions for taking norfloxacin are as follows: First, the use of norfloxacin capsules and other classes of quinolone antibiotics is prohibited for minors under 18 years of age. Second, drink more water during taking the drug to prevent the formation of crystals in the urinary tract. Third, taking norfloxacin capsules must avoid light exposure, because this drug is easy to cause photosensitivity. If you need to go out in the summer heat, you must pay attention to sun protection, wear sun hat and long pants, long coat to avoid light exposure. Fourth, norfloxacin capsules and some drugs and food have interactions, such as and milk and metal ions of drugs or food easily formed metallic complexes, which affect the absorption of drugs. If it must be taken at the same time, it is recommended that the interval between drugs is 2-3 hours.