You should not use  ertapenem if you are allergic to certain antibiotics. You should not inject ertapenem into a muscle if you are allergic to a numbing medicine such as lidocaine or Novocain.
Before taking this medicine
You should not use this medicine if you are allergic to ertapenem or to certain antibiotics, especially:
meropenem (Merrem);
imipenem (Primaxin);
a cephalosporin such as cefdinir (Omnicef), cefprozil (Cefzil), cefuroxime (Ceftin), cephalexin (Keflex), and others; or
an antibiotic such as amoxicillin (Amoxil, Augmentin, Dispermox, Moxatag), ampicillin (Principen, Unasyn), dicloxacillin (Dycill, Dynapen), oxacillin (Bactocill), or penicillin (Bicillin L-A, PC Pen VK, Pfizerpen).
You should not inject ertapenem into a muscle if you are allergic to a numbing medicine such as lidocaine or Novocain.
To make sure ertapenem is safe for you, tell your doctor if you have:
kidney disease;
epilepsy or other seizure disorder; or
a history of head injury or brain tumor.
This medicine is not expected to harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant.
Ertapenem can pass into breast milk and may harm a nursing baby. Tell your doctor if you are breast-feeding a baby.
Do not give this medicine to a child younger than 3 months old.
