It is also used to treat people who have been exposed to anthrax or certain types of plague. All three medications have significant side effects and interact with many medications. Patients should be told about the risks to the neonate: possible fetal abnormality, delayed development, or withdrawal symptoms. Examples of compounds that may interfere with fluoroquinolone bioavailability include multivitamins that contain iron. Before using this medication, tell your doctor or pharmacist your medical history.