Cefaclor is in a group of drugs called cephalosporin (SEF a low spor in) antibiotics. It works by fighting bacteria in your body.

Cefaclor is used to treat many different types of infections caused by bacteria.

Cefaclor may also be used for other purposes not listed in this medication guide.

Do not take this medication if you are allergic to cefaclor, or to similar antibiotics, such as Ceftin, Cefzil, Keflex, Omnicef, and others.

Before taking this medication, tell your doctor if you are allergic to any drugs (especially penicillin). Also tell your doctor if you have kidney disease or a history of intestinal problems.

Take this medication for the entire length of time prescribed by your doctor. Your symptoms may get better before the infection is completely treated. Cefaclor will not treat a viral infection such as the common cold or flu.

Antibiotic medicines can cause diarrhea, which may be a sign of a new infection. If you have diarrhea that is watery or has blood in it, call your doctor. Do not use any medicine to stop the diarrhea unless your doctor has told you to.

Do not take this medication if you are allergic to cefaclor or to other cephalosporin antibiotics, such as:

• cefadroxil (Duricef);

• cefazolin (Ancef);

• cefdinir (Omnicef);

• cefditoren (Spectracef);

• cefpodoxime (Vantin);

• cefprozil (Cefzil);

• ceftibuten (Cedax);

• cefuroxime (Ceftin);

• cephalexin (Keflex); or

• cephradine (Velosef); and others.

Before taking cefaclor, tell your doctor if you are allergic to any drugs (especially penicillins), or if you have:

• kidney disease (or if you are on dialysis); or

• a history of intestinal problems, such as colitis.

If you have any of these conditions, you may need a dose adjustment or special tests to safely take cefaclor.

FDA pregnancy category B. This medication is not expected to be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment.

Cefaclor may pass into breast milk and could harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

The cefaclor suspension (liquid) contains sucrose. Talk to your doctor before using this form of cefaclor if you have diabetes.