Cefdinir 300 Mg Capsule

See also How to Use section.

Cefdinir Capsules

Medically reviewed by Drugs.com. Last updated on Aug 6, 2022.

Uses of Cefdinir Capsules:

  • It is used to treat bacterial infections.

What do I need to tell my doctor BEFORE I take Cefdinir Capsules?

  • If you have an allergy to cefdinir or any other part of this medicine (cefdinir capsules).
  • If you are allergic to this medicine (cefdinir capsules); any part of this medicine (cefdinir capsules); or any other drugs, foods, or substances. Tell your doctor about the allergy and what signs you had.

This medicine may interact with other drugs or health problems.

Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take this medicine (cefdinir capsules) with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.

What are some things I need to know or do while I take Cefdinir Capsules?

  • Tell all of your health care providers that you take this medicine (cefdinir capsules). This includes your doctors, nurses, pharmacists, and dentists.
  • Do not use longer than you have been told. A second infection may happen.
  • If you have high blood sugar (diabetes) and test your urine glucose, talk with your doctor to find out which tests are best to use.
  • This medicine may affect certain lab tests. Tell all of your health care providers and lab workers that you take this medicine (cefdinir capsules).
  • If you take this medicine (cefdinir capsules) with an iron product, your stools may turn a reddish color. This is normal.
  • Tell your doctor if you are pregnant, plan on getting pregnant, or are breast-feeding. You will need to talk about the benefits and risks to you and the baby.

Related/similar drugs

How is this medicine (Cefdinir Capsules) best taken?

Use this medicine (cefdinir capsules) as ordered by your doctor. Read all information given to you. Follow all instructions closely.

  • Keep taking this medicine (cefdinir capsules) as you have been told by your doctor or other health care provider, even if you feel well.
  • Take with or without food. Take with food if it causes an upset stomach.
  • Do not take antacids that have aluminum or magnesium in them within 2 hours of this medicine (cefdinir capsules).
  • Do not take iron products within 2 hours before or 2 hours after taking this medicine (cefdinir capsules).

What do I do if I miss a dose?

  • Take a missed dose as soon as you think about it.
  • If it is close to the time for your next dose, skip the missed dose and go back to your normal time.
  • Do not take 2 doses at the same time or extra doses.

What are some side effects that I need to call my doctor about right away?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:

  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Not able to pass urine or change in how much urine is passed.
  • Dark urine or yellow skin or eyes.
  • Seizures.
  • Fever, chills, or sore throat; any unexplained bruising or bleeding; or feeling very tired or weak.
  • Diarrhea is common with antibiotics. Rarely, a severe form called C diff–associated diarrhea (CDAD) may happen. Sometimes, this has led to a deadly bowel problem (colitis). CDAD may happen during or a few months after taking antibiotics. Call your doctor right away if you have stomach pain, cramps, or very loose, watery, or bloody stools. Check with your doctor before treating diarrhea.

What are some other side effects of Cefdinir Capsules?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:

These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.

You may report side effects to the FDA at 1-800-332-1088. You may also report side effects at https://www.fda.gov/medwatch.

If OVERDOSE is suspected:

If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

How do I store and/or throw out Cefdinir Capsules?

  • Store at room temperature.
  • Store in a dry place. Do not store in a bathroom.
  • Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
  • Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.
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Consumer Information Use and Disclaimer

  • If your symptoms or health problems do not get better or if they become worse, call your doctor.
  • Do not share your drugs with others and do not take anyone else’s drugs.
  • Some drugs may have another patient information leaflet. Check with your pharmacist. If you have any questions about this medicine (cefdinir capsules), please talk with your doctor, nurse, pharmacist, or other health care provider.
  • If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

Frequently asked questions

More about cefdinir

  • Check interactions
  • Pricing & coupons
  • Reviews (361)
  • Drug images
  • Side effects
  • Dosage information
  • Patient tips
  • During pregnancy
  • Support group
  • Drug class: third generation cephalosporins
  • Breastfeeding
  • En español

Patient resources

  • Drug Information
  • Cefdinir (Advanced Reading)
  • Cefdinir Suspension

Other brands

Professional resources

Related treatment guides

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Cefdinir Capsule – Uses, Side Effects, and More

Cefdinir is used to treat a wide variety of bacterial infections. This medication is known as a cephalosporin antibiotic. It works by stopping the growth of bacteria.This antibiotic treats only bacterial infections. It will not work for viral infections (such as common cold, flu). Using any antibiotic when it is not needed can cause it to not work for future infections.

How to use cefdinir oral

Take this medication by mouth with or without food as directed by your doctor, usually once a day or twice a day (every 12 hours).

The dosage is based on your medical condition and response to treatment.

For the best effect, take this antibiotic at evenly spaced times. To help you remember, take this medication at the same time(s) every day.

Continue to use this medication until the full prescribed amount is finished even if symptoms disappear after a few days. Stopping the medication too early may allow bacteria to continue to grow, which may result in a relapse of the infection.

Some medications can bind with cefdinir preventing its full absorption. If you take antacids containing magnesium or aluminum, iron supplements, or vitamin/mineral products, take them at least 2 hours apart from cefdinir.

Inform your doctor if your condition persists or worsens.

Side Effects

Diarrhea, headache, or nausea may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.

This medication may cause your stools to turn a reddish color, especially if you also take iron products. This is harmless.

Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell your doctor right away if you have any serious side effects, including: signs of liver disease (such as nausea/vomiting that doesn’t stop, loss of appetite, stomach/abdominal pain, yellowing eyes/skin, dark urine), unusual tiredness, new signs of infection (such as persistent sore throat, fever), easy bruising/bleeding, signs of kidney problems (such as change in the amount of urine), mental/mood changes (such as confusion).

This medication may rarely cause a severe intestinal condition due to a bacteria called C. difficile. This condition may occur during treatment or weeks to months after treatment has stopped. Tell your doctor right away if you develop: diarrhea that doesn’t stop, abdominal or stomach pain/cramping, blood/mucus in your stool.

If you have these symptoms, do not use anti-diarrhea or opioid products because they may make symptoms worse.

Use of this medication for prolonged or repeated periods may result in oral thrush or a new vaginal yeast infection (oral or vaginal fungal infection). Contact your doctor if you notice white patches in your mouth, a change in vaginal discharge or other new symptoms.

A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US – Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.

In Canada – Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Precautions

Before taking cefdinir, tell your doctor or pharmacist if you are allergic to it; or to penicillins or other cephalosporin antibiotics (such as cephalexin); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: kidney disease, intestinal disease (colitis).

Cefdinir may cause live bacterial vaccines (such as typhoid vaccine) to not work well. Tell your health care professional that you are using cefdinir before having any immunizations/vaccinations.

Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).

During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.

This drug does not pass into breast milk. Consult your doctor before breast-feeding.

Interactions

See also How to Use section.

Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor’s approval.

This medication may cause false positive results with certain diabetic urine testing products (cupric sulfate-type). This drug may also affect the results of certain lab tests. Make sure laboratory personnel and your doctors know you use this drug.

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Cefdinir

Generic name: cefdinir [ SEF-dih-neer ]
Brand names: Omnicef, Omnicef Omni-Pac
Dosage forms: oral capsule (300 mg); oral powder for reconstitution (125 mg/5 mL; 250 mg/5 mL)
Drug class: Third generation cephalosporins

Medically reviewed by Drugs.com on Dec 26, 2022. Written by Cerner Multum.

What is cefdinir?

Cefdinir is a cephalosporin (SEF a low spor in) antibiotic that is used to treat many different types of infections caused by bacteria.

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

Warnings

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

Before taking this medicine

You should not take this medicine if you are allergic to cefdinir or any other cephalosporin antibiotic (cefadroxil, cefprozil, cefazolin, cefalexin, Keflex, and others).

Tell your doctor if you have ever had:

  • kidney disease (or if you are on dialysis);
  • intestinal problems, such as colitis; or
  • an allergy to any drugs (especially penicillins).

Cefdinir liquid contains sucrose. Talk to your doctor before using this form of cefdinir if you have diabetes.

Tell your doctor if you are pregnant or breastfeeding.

Related/similar drugs

How should I take cefdinir?

Follow all directions on your prescription label and read all medicine guides or instruction sheets. Use the medicine exactly as directed.

Shake the oral suspension (liquid) before you measure a dose. Use the dosing syringe provided, or use a medicine dose-measuring device (not a kitchen spoon).

You may take cefdinir with or without food.

Use cefdinir for the full prescribed length of time, even if your symptoms quickly improve. Skipping doses can increase your risk of infection that is resistant to medication. Cefdinir will not treat a viral infection such as the flu or a common cold.

Cefdinir can affect the results of certain medical tests. Tell any doctor who treats you that you are using cefdinir.

Store at room temperature away from moisture and heat. Throw away any unused cefdinir liquid that is older than 10 days.

What happens if I miss a dose?

Take the medicine as soon as you can, but skip the missed dose if it is almost time for your next dose. Do not take two doses at one time.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Overdose symptoms may include nausea, vomiting, stomach pain, diarrhea, or a seizure.

What should I avoid while taking cefdinir?

Avoid using antacids or mineral supplements that contain aluminum, magnesium, or iron within 2 hours before or after taking cefdinir. Antacids or iron can make it harder for your body to absorb cefdinir. This does not include baby formula fortified with iron.

Antibiotic medicines can cause diarrhea, which may be a sign of a new infection. If you have diarrhea that is watery or bloody, call your doctor before using anti-diarrhea medicine.

Cefdinir side effects

Get emergency medical help if you have signs of an allergic reaction (hives, difficult breathing, swelling in your face or throat) or a severe skin reaction (fever, sore throat, burning eyes, skin pain, red or purple skin rash with blistering and peeling).

Cefdinir may cause serious side effects. Call your doctor at once if you have:

  • severe stomach pain, diarrhea that is watery or bloody (even if it occurs months after your last dose);
  • fever, chills, body aches, flu symptoms;
  • pale skin, easy bruising, unusual bleeding;
  • seizure (convulsions);
  • fever, weakness, confusion;
  • dark colored urine, jaundice (yellowing of the skin or eyes); or
  • kidney problems–little or no urination, swelling in your feet or ankles, feeling tired or short of breath.

Common side effects of cefdinir may include:

  • nausea, vomiting, stomach pain, diarrhea;
  • vaginal itching or discharge;
  • headache; or
  • rash (including diaper rash in an infant taking liquid cefdinir.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Cefdinir dosing information

Usual Adult Dose for Pneumonia:

Community acquired: 300 mg orally every 12 hours for 10 to 14 days

Usual Adult Dose for Bronchitis:

Acute exacerbations of chronic bronchitis: 300 mg orally every 12 hours for 5 to 10 days or 600 mg orally every 24 hours for 10 days

Usual Adult Dose for Sinusitis:

Acute maxillary sinusitis: 300 mg orally every 12 hours or 600 mg orally every 24 hours for 10 days

Usual Adult Dose for Skin or Soft Tissue Infection:

Uncomplicated: 300 mg orally every 12 hours for 10 days

Usual Adult Dose for Tonsillitis/Pharyngitis:

300 mg orally every 12 hours for 5 to 10 days or 600 mg orally every 24 hours for 10 days

Usual Pediatric Dose for Pneumonia:

Community acquired:
13 years or older: 300 mg orally every 12 hours for 10 to 14 days

Usual Pediatric Dose for Bronchitis:

Acute exacerbations of chronic bronchitis:
13 years or older: 300 mg orally every 12 hours for 5 to 10 days or 600 mg orally every 24 hours for 10 days

Usual Pediatric Dose for Otitis Media:

Acute bacterial otitis media:
6 months through 12 years: 7 mg/kg orally every 12 hours for 5 to 10 days or 14 mg/kg orally every 24 hours for 10 days
Maximum dose: 600 mg/day

Usual Pediatric Dose for Tonsillitis/Pharyngitis:

6 months through 12 years: 7 mg/kg orally every 12 hours for 5 to 10 days or 14 mg/kg orally every 24 hours for 10 days
Maximum dose: 600 mg/day

13 years or older: 300 mg orally every 12 hours for 5 to 10 days or 600 mg orally every 24 hours for 10 days

Usual Pediatric Dose for Sinusitis:

Acute maxillary sinusitis:
6 months through 12 years: 7 mg/kg orally every 12 hours or 14 mg/kg orally every 24 hours for 10 days
Maximum dose: 600 mg/day

13 years or older: 300 mg orally every 12 hours or 600 mg orally every 24 hours for 10 days

Usual Pediatric Dose for Skin and Structure Infection:

Uncomplicated:
6 months through 12 years: 7 mg/kg orally every 12 hours for 10 days
Maximum dose: 600 mg/day

13 years or older: 300 mg orally every 12 hours for 10 days

What other drugs will affect cefdinir?

Tell your doctor about all your other medicines, especially:

  • probenecid; or
  • vitamin or mineral supplements that contain iron.

This list is not complete. Other drugs may affect cefdinir, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed here.

Where can I get more information?

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

Frequently asked questions

More about cefdinir

  • Check interactions
  • Pricing & coupons
  • Reviews (361)
  • Drug images
  • Side effects
  • Dosage information
  • Patient tips
  • During pregnancy

Patient resources

  • Advanced Reading
  • Cefdinir Capsules
  • Cefdinir Suspension
  • Support group
  • Breastfeeding
  • En español

Other brands

Professional resources

  • Prescribing Information
  • Drug class: third generation cephalosporins

Related treatment guides

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Copyright 1996-2023 Cerner Multum, Inc. Version: 7.03.

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Alex Koliada, PhD

Alex Koliada, PhD

Alex Koliada, PhD, is a well-known doctor. He is famous for his studies of ageing, genetics and other medical conditions. He works at the Institute of Food Biotechnology and Genomics NAS of Ukraine. His scientific researches are printed by the most reputable international magazines. Some of his works are: Differences in the gut Firmicutes to Bacteroidetes ratio across age groups in healthy Ukrainian population [BiomedCentral.com]; Mating status affects Drosophila lifespan, metabolism and antioxidant system [Science Direct]; Anise Hyssop Agastache foeniculum Increases Lifespan, Stress Resistance, and Metabolism by Affecting Free Radical Processes in Drosophila [Frontiersin].
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