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Cefaclor Monohydrate Oral tablet, extended-release

What is this medicine?

CEFACLOR (SEF a klor) is a cephalosporin antibiotic. It is used to treat certain kinds of bacterial infections. It will not work for colds, flu, or other viral infections.

How should I use this medicine?

Take this medicine by mouth. Follow the directions on the prescription label. Take it with food or within 1 hour after eating. Swallow the tablets whole. Do not chew, crush, or cut the tablets. Take your medicine at regular intervals. Do not take it more often than directed. Take all of your medicine as directed even if you think you are better. Do not skip doses or stop your medicine early.

Contact your pediatrician regarding the use of this medicine in children. Special care may be needed.

What side effects may I notice from receiving this medicine?

Side effects that you should report to your doctor or health care professional as soon as possible:

  • allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue

  • breathing problems

  • dizziness

  • fever or chills

  • redness, blistering, peeling or loosening of the skin, including inside the mouth

  • seizures

  • severe or watery diarrhea

  • sore throat

  • stomach pain or cramps

  • swollen joints

  • trouble passing urine or change in the amount of urine

  • unusual bleeding or bruising

  • unusually weak or tired

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

  • gas or heartburn

  • headache

  • nausea, vomiting

What may interact with this medicine?

  • antacids that contain aluminum or magnesium

  • other antibiotics

  • probenecid

What if I miss a dose?

If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses. There should be an interval of at least 4 hours between doses.

Where should I keep my medicine?

Keep out of the reach of children.

Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Keep away from moisture and sunlight. Throw the medicine away after the expiration date.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:

  • bleeding problems

  • diarrhea

  • kidney disease

  • stomach or intestine problems (especially colitis)

  • an unusual or allergic reaction to cefaclor, other cephalosporin antibiotics, penicillin, penicillamine, other foods, dyes or preservatives

  • pregnant or trying to get pregnant

  • breast-feeding

What should I watch for while using this medicine?

Tell your doctor or health care professional if your symptoms do not get better in a few days.

If you have diabetes you might get a false-positive result for sugar in your urine. Check with your doctor or health care professional before you change your diet or the dose of your diabetes medicine.

Online Medical Reviewer: Louise Akin, RN, BSN
Online Medical Reviewer: Daphne Pierce-Smith, RN, MSN, FNP, CCRC
Last Review Date: 3/31/2009
© 2000-2014 The StayWell Company, LLC. 780 Township Line Road, Yardley, PA 19067. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.