Bacteria Home > Side Effects of Norfloxacin

Common Problems

Norfloxacin has been studied extensively in clinical trials. In these studies, the most commonly reported norfloxacin side effects included:
 
  • Nausea -- in up to 4.2 percent of people
  • Headaches -- up to 2.8 percent
  • Dizziness -- up to 2.6 percent
  • Abdominal (stomach) cramping -- up to 1.6 percent
  • General weakness -- up to 1.3 percent.
 

Other Uncommon Side Effects of Norfloxacin

Some reported side effects occurred in less than 1 percent of people taking norfloxacin. Given how uncommon they are, it can be difficult to tell whether these adverse reactions are actually caused by the medication itself or by something else.
 
Some of these rare but possible side effects include:
 
 

Final Thoughts

You may experience some or none of the side effects listed in this article. Unfortunately, there is no way for your healthcare provider to know beforehand if you will have problems with a medicine that you have never tried.
 
Therefore, make sure to let your healthcare provider know if you develop any side effects while taking norfloxacin or if something "just does not seem right." While it may not be related to the medication, your healthcare provider will be able to diagnose and treat the problem.
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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