Levofloxacin is also used to treat people who have been exposed to anthrax or certain types of plague. Fluoroquinolone antibiotics can cause serious or disabling side effects. Levaquin should be used only for infections that cannot be treated with a safer antibiotic. Warnings

Side Effects. Drug information provided by: Merative, Micromedex® Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Levofloxacin oral tablet is a prescription medication that’s used to treat bacterial infections. Learn about side effects, warnings, dosage, and more.