Levaquin for pregnant women The effects of Levaquin over pregnancy are not known. Anyway tell your medic if you are pregnant or become pregnant during Levaquin administration. It isnt known either Levaquin affects the unborn baby or not, but it may harm to a breast fed baby. The antibiotic can get into mothers milk and be harmful for the newly born baby. Dont forget to discuss with your doctor if you are pregnant or planning a baby. And also ask your doctor concerning risks of a nursing baby while administrating Levaquin. Avoid using Levaquin if: 1) You have allergies after you buy Levaquin components 2) You are allergic to any antibiotic similar to levofloxacin 3) You have low potassium in your blood or deviations of heart rhythm 4) You are being treated of heart rhythm disorder If any of these symptoms refer to your condition, contact your doctor.