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Avelox Side Effects
While most people do not experience problems with Avelox, side effects are possible. The most common side effects seen in clinical studies included dizziness, diarrhea, and nausea. Other side effects (occurring in less than 1 percent of people) include drowsiness, dry mouth, and constipation. Most side effects of Avelox are mild, but you should seek medical attention if you experience fainting, hallucinations, or bloody diarrhea.
As with any medicine, side effects are possible with Avelox® (moxifloxacin). However, not everyone who takes the medication will have problems. In fact, most people tolerate it quite well. If side effects do occur, in most cases, they are minor and either require no treatment or can easily be treated by you or your healthcare provider.
(This article covers many, but not all, of the possible side effects with Avelox. Your healthcare provider can discuss a more complete list of Avelox side effects with you.)
Avelox has been studied thoroughly in clinical trials. In these studies, the side effects that occurred in a group of people taking Avelox were documented and compared to side effects that occurred in a similar group of people taking a different antibiotic. This way, it is possible to see what side effects occurred, how often they appeared, and how they compare to the group taking a different medication.
In these studies, the most common Avelox side effects included:
- Nausea -- in up to 6 percent of people
- Diarrhea -- up to 5 percent
- Dizziness -- up to 2 percent.
Written by/reviewed by: Kristi Monson, PharmD; Arthur Schoenstadt, MD
Last reviewed by: Kristi Monson, PharmD



