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Cefaclor

Written By Dr. MayankReviewed By Dr. Rajeev Sharma
Last updated 25 Nov 2025 | 09:34 AM (UTC)

Cefaclor Uses

Cefaclor is used in the treatment of bacterial infections. It is used in serious bacterial infections of various body parts like urinary tract, skin and soft-tissue, blood, brain and lungs (pneumonia). It is also used to prevent infections after surgery.

Available generics for Cefaclor

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How Cefaclor works

Cefaclor is an antibiotic. It kills bacteria by preventing them from forming the bacterial protective covering (cell wall) which is needed for them to survive.

Common side effects of Cefaclor

Gastrointesinal symptoms, Diarrhea, Hypersensitivity, Drug eruptions, Increased white blood cell count (eosinophils), Genital itching, Increased liver enzymes, Vaginal inflammation
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Expert advice for Cefaclor

  • Your doctor has prescribed Cefaclor to cure your infection and improve your symptoms.
  • Do not skip any doses and finish the full course of treatment even if you feel better. Stopping it early may make the infection come back and harder to treat.
  • Take it with food to avoid an upset stomach.
  • Diarrhea may occur as a side effect but should stop when your course is complete. Inform your doctor if it does not  stop or if you find blood in your stools.
  • Avoid consuming alcohol while taking Cefaclor as it may cause increased side effects.
  • Discontinue Cefaclor and inform your doctor immediately if you get a rash, itchy skin, swelling of face and mouth, or have difficulty in breathing.
  • Your doctor has prescribed Cefaclor to cure your infection and improve your symptoms.
  • Do not skip any doses and finish the full course of treatment even if you feel better. Stopping it early may make the infection come back and harder to treat.
  • Take it with food to avoid an upset stomach.
  • Diarrhea may occur as a side effect but should stop when your course is complete. Inform your doctor if it does not  stop or if you find blood in your stools.
  • Avoid consuming alcohol while taking Cefaclor as it may cause increased side effects.
  • Discontinue Cefaclor and inform your doctor immediately if you get a rash, itchy skin, swelling of face and mouth, or have difficulty in breathing.

Frequently asked questions for Cefaclor

Yes, you can take Paracetamol while using Cefaclor.
Yes, the use of Cefaclor can cause diarrhea. It is an antibiotic which kills the harmful bacteria. However, it also affects the helpful bacteria in your stomach or intestine and causes diarrhea. If diarrhea persists, talk to your doctor about it.
Talk to your doctor if Cefaclor doesn't seem to work for you. Your doctor may increase the dose of Cefaclor or switch you to an alternate option, which may work for you.
Usually, Cefaclor starts working soon after taking it. However, it may take some days to kill all the harmful bacteria and make you feel better.
No, do not stop taking Cefaclor and complete the full course of treatment even if you feel better. Your symptoms may improve before the infection is completely cured.