Cefaclor ER

Generic Name: Cefaclor

  • What is Cefaclor ER?

    Cefaclor ER is an antibiotic used to treat certain bacterial infections of the respiratory (lung) tract, and throat, tonsils, or skin infections. It may also be used to treat other bacterial infections, as determined by your doctor.

  • What is the most important information I should know about Cefaclor ER?

    Do not take cefaclor ER if you are allergic to it, any of its ingredients, or similar antibiotics (such as cefazolin or cefotetan). If you are allergic to penicillin antibiotics, it is possible for you to have an allergic reaction to this medication. Tell your doctor immediately if you take cefaclor ER and feel signs of an allergic reaction (such as a rash, swelling, or difficulty breathing).

    Cefaclor ER can cause diarrhea or colitis (inflammation of the colon). This can occur a couple of months after taking the last dose of cefaclor ER. Tell your doctor immediately if you have diarrhea or colitis.

    Use cefaclor ER as prescribed by your doctor for the full course of treatment, even if symptoms improve earlier. Do not skip doses. Complete the full course of cefaclor ER. Skipping doses or not completing the full course of cefaclor ER can decrease its effectiveness and can lead to the growth of bacteria that are resistant to the effects of cefaclor ER.

  • Who should not take Cefaclor ER?

    Do not take cefaclor ER if you are allergic to it, any of its ingredients, or similar antibiotics.

    Do not take cefaclor ER to treat viral infections, such as the common cold.

  • What should I tell my doctor before I take the first dose of Cefaclor ER?

    Tell your doctor about all prescription, over-the-counter, and herbal medications you are taking before beginning treatment with cefaclor ER. Also, talk to your doctor about your complete medical history, especially if you have allergies or kidney disease.

  • What is the usual dosage?

    The information below is based on the dosage guidelines your doctor uses. Depending on your condition and medical history, your doctor may prescribe a different regimen. Do not change the dosage or stop taking your medication without your doctor's approval.

    Respiratory Tract Infections

    Adults and adolescents ≥16 years: The recommended dose is 500 milligrams (mg) every 12 hours for 7 days.

    Throat, Tonsils, and Skin Infections

    Adults and adolescents ≥16 years: The recommended dose is 375 mg every 12 hours. Your doctor will determine the duration of treatment based on the type of your infection.

  • How should I take Cefaclor ER?

    Take cefaclor ER as prescribed by your doctor. Take cefaclor ER with a meal to get the right amount of medicine in your body.

  • What should I avoid while taking Cefaclor ER?

    Do not cut, crush, or chew cefaclor ER tablets.

  • What are possible food and drug interactions associated with Cefaclor ER?

    If cefaclor ER is taken with certain other drugs, the effects of either could be increased, decreased, or altered. It is especially important to check with your doctor before combining cefaclor ER with the following: antacids containing magnesium or aluminum, probenecid, or warfarin.

  • What are the possible side effects of Cefaclor ER?

    Side effects cannot be anticipated. If any develop or change in intensity, tell your doctor as soon as possible. Only your doctor can determine if it is safe for you to continue taking this drug.

    Side effects may include: allergic reactions; back pain; diarrhea; dizziness; face edema (swelling); fainting; headache; increased cough; inflammation of the nose, throat, or vagina; itching; low blood pressure; nausea; numbness; rash; stomach pain

  • Can I receive Cefaclor ER if I am pregnant or breastfeeding?

    The effects of cefaclor ER during pregnancy and breastfeeding are unknown. Tell your doctor immediately if you are pregnant, plan to become pregnant, or are breastfeeding.

  • What should I do if I miss a dose of Cefaclor ER?

    If you miss a dose of cefaclor ER, take it as soon as you remember. However, if it is almost time for your next dose, skip the one you missed and return to your regular dosing schedule. Do not take two doses at once.

  • How should I store Cefaclor ER?

    Store at room temperature.