Omnicef (Cefdinir)

Omnicef
4.97 ratingsReviews
Generic:
Cefdinir
Indications:
infections
Analogs:
Amoxicillin Cefuroxime Cefpodoxime Cephalexin Azithromycin Clarithromycin Ceftin Vantin Suprax Cefzil Keflex Duricef Amoxil Augmentin Zithromax Biaxin
In stock: 18 packs
AdultsPregnancyAllergiesDiabetesBreastfeedingChildrenDriving

Dosages

Omnicef 300 mg

Quantity Price per tablet You save Total price
30 C$6.36 - C$190.68
60 C$5.19 C$69.86 C$311.50
90 C$4.81 C$139.02 C$433.02
120 C$4.61 C$209.16 C$553.56
180 C$4.41 C$349.86 C$794.22

Manufacturers

AbbVie Inc.Ranbaxy Laboratories Ltd.Torrent Pharmaceuticals Limited

Payment & Shipping

Package Example

Your order is carefully packed and ships within 24 hours. Here is what a typical package looks like.

Sized like a regular personal letter (approximately 24x11x0.7 cm), with no indication of what is inside.

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Shipping Times
Shipping MethodEstimated delivery
Express Free for orders over C$420.00Estimated delivery to Canada: 4-7 days
Standard Free for orders over C$280.00Estimated delivery to Canada: 14-21 days
EMSCanada Post
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Discount Coupons

  • Victoria Day - May 18, 2026 8% VICTORIA8
  • Canada Day - July 1, 2026 10% CANADADAY10
  • Labour Day - September 7, 2026 6% LABOUR6
  • Thanksgiving (Canada) - October 12, 2026 9% THANKS9
  • Boxing Day - December 26, 2026 12% BOXING12

FAQ

Cefdinir requires a prescription when purchased from local pharmacies in Canada. Our store policy allows you to order cefdinir 300 mg capsules without a prescription and have them sent by mail.

Do not save leftover cefdinir for a future illness or give it to someone else. Return unused capsules to a pharmacy or an authorized medication take-back program where available, and follow local disposal instructions if a take-back option is not accessible.

A generic version of Omnicef contains cefdinir, the same active ingredient. Generic products are made to meet the same standards for active-ingredient strength, dosage form, and bioequivalence, although the manufacturer, packaging, appearance, and inactive ingredients may differ.

Take cefdinir capsules by mouth exactly as directed for the infection being treated, with or without food. Standard adult and adolescent regimens may use 300 mg every 12 hours or 600 mg once daily, depending on the infection; people with significant kidney impairment may need a different regimen. Separate cefdinir from iron supplements and aluminum- or magnesium-containing antacids by at least 2 hours.

Description

Note: Images in the description are provided for informational purposes and may differ from the actual appearance of the product. Please refer to the product name, strength, ingredients, and dosage form.

Cefdinir (brand: Omnicef) is a third-generation oral cephalosporin antibiotic available as capsules and as an oral suspension. It's used to treat certain mild to moderate bacterial infections caused by susceptible organisms. In Canada, it should be used only under the guidance of a qualified healthcare professional. Use cefdinir only as prescribed-antibiotics do not treat viral infections such as colds or flu.

A Canadian researcher who has studied cefdinir is Dr. Philippe Ovetchkine, MD, a pediatric infectious disease specialist and researcher at CHU Sainte-Justine, Université de Montréal.

Omnicef (Cefdinir) 300 mg

What it's used for

In U.S. labeling, cefdinir is indicated for certain infections caused by susceptible bacteria, including community-acquired pneumonia, pharyngitis/tonsillitis (strep throat), acute maxillary sinusitis, acute bacterial flare-ups of chronic bronchitis, uncomplicated skin infections, and, in pediatric patients, acute bacterial otitis media (ear infections).

Ear infections

In Canada, cefdinir may be prescribed for acute bacterial otitis media in pediatric patients when it is caused by susceptible strains of Haemophilus influenzae (including β-lactamase producing strains), Streptococcus pneumoniae (penicillin-susceptible strains only), and Moraxella catarrhalis (including β-lactamase producing strains).

Strep throat

For pharyngitis/tonsillitis ("strep throat"), cefdinir is indicated when the infection is caused by susceptible Streptococcus pyogenes. Cefdinir can clear S. pyogenes from the throat, but it has not been studied for preventing rheumatic fever after strep pharyngitis/tonsillitis. Only intramuscular penicillin has been shown to prevent rheumatic fever.

Pneumonia

For community-acquired pneumonia, cefdinir is indicated for infections caused by susceptible strains of Haemophilus influenzae (including β-lactamase producing strains), Haemophilus parainfluenzae (including β-lactamase producing strains), Moraxella catarrhalis (including β-lactamase producing strains), and Streptococcus pneumoniae (penicillin-susceptible strains only).

UTI

Cefdinir is not approved in Canada for urinary tract infections. In some situations, clinicians may still prescribe it off-label based on local resistance patterns and urine culture and susceptibility results. Do not use cefdinir for a UTI unless your prescriber specifically recommends it.

Side effects

Common side effects reported with cefdinir include diarrhea, nausea, headache, rash, and vaginal yeast infection in some women. Get urgent medical help if you have signs of a severe allergic reaction, such as hives, swelling of the face, lips, or tongue, or trouble breathing. Contact a clinician promptly if you have severe or ongoing diarrhea, especially if it is watery or bloody.

Comparison: cefdinir vs amoxicillin vs Augmentin

Feature Cefdinir Amoxicillin Augmentin (amoxicillin/clavulanate)
Class / route Third-generation cephalosporin; oral capsule or oral suspension Penicillin-class; oral (various forms) Penicillin-class + β-lactamase inhibitor; oral (various forms)
Ear infections (AOM) Indicated in pediatric AOM caused by susceptible H. influenzae, S. pneumoniae (penicillin-susceptible strains only), and M. catarrhalis Indicated for ENT infections caused by susceptible β-lactamase-negative isolates Indicated for AOM caused by β-lactamase-producing H. influenzae and M. catarrhalis
Strep throat Indicated for pharyngitis/tonsillitis caused by susceptible S. pyogenes; not studied for rheumatic fever prevention Commonly used for susceptible streptococcal ENT infections (product-specific labeling varies) May be used when broader coverage is needed; still penicillin-class
Pneumonia Indicated for community-acquired pneumonia caused by susceptible organisms Labeling includes lower respiratory tract infections caused by susceptible β-lactamase-negative isolates Labeling includes lower respiratory tract infections due to β-lactamase-producing H. influenzae and M. catarrhalis
Penicillin allergy Cross-reactivity between penicillins and third-generation cephalosporins is generally low, but patients with a history of immediate or severe reactions (for example, anaphylaxis) should discuss options carefully with a clinician. A true penicillin allergy is a major concern-do not take it unless your clinician confirms it is safe for you. The same penicillin-class concern applies as with amoxicillin; do not take it unless your clinician confirms it is safe for you.
Common side effects (general) Diarrhea, nausea, headache, rash; yeast infection in some women GI upset, rash (varies by product and patient) GI upset (often more diarrhea), rash (varies by product and patient)

Storage

Capsules and dry powder should be stored at 25°C (77°F); excursions permitted to 15-30°C (59-86°F). After mixing, the oral suspension should be stored at controlled room temperature, 20-25°C (68-77°F). Shake well before each dose and discard any unused suspension after 10 days. Refrigeration is not required. Do not freeze.

Medically reviewed by
Brian Holtry
MD, infectious diseases specialist and medical writer
Updated August 11, 2026

Customer questions

Asked by Aiden, Iqaluit, Canada

I live in Iqaluit and would prefer to order cefdinir online rather than travel for it. How can I find out whether you can ship to my address?

Answered by Support team

Add your complete delivery address and postal code at checkout. We will show whether delivery is available for that destination before payment.

Asked by Jack B, Barrie, Canada

My cefdinir package arrived in Barrie after sitting outside during very cold weather. What should I check before I take the capsules?

Answered by Support team

Check that the package and capsules are dry, intact, and not discoloured, cracked, or otherwise damaged. Cefdinir capsules should be stored at 25°C, with permitted excursions from 15°C to 30°C.

Asked by Darren, Regina, Canada

Before ordering cefdinir 300 mg capsules, can I use my Regina postal code to see if shipping is available?

Answered by Support team

Yes. Enter your Regina postal code and delivery address during checkout to check destination availability before completing the order.

Asked by Sophie, Guelph, Canada

I have started a cefdinir course and just found out that I am pregnant. Should I stop taking it?

Answered by Support team
Medical reviewed by Brian Holtry

Do not make a stop-or-continue decision on your own. Cefdinir should be used during pregnancy only when clearly needed, so contact the prescriber promptly to review the infection, your stage of treatment, and suitable options.

Product specifications

Active ingredientCefdinir
Drug classCephalosporin antibiotic
Dosage formCapsule
Available strengths300 mg
RouteOral
StorageStore at 25°C; excursions permitted between 15°C and 30°C. Keep capsules in a tightly closed container, away from excess moisture and light.
ATC codeJ01DD15

Regulatory information

Authorization StatusCefdinir is authorized for human therapeutic use in Canada.
Dispensing ClassificationA valid prescription from a licensed healthcare practitioner is required to obtain cefdinir capsules.

More information