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Omnicef (Cefdinir)

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Generic Omnicef is effective against susceptible bacteria causing infections of the middle ear (otitis media), tonsils (tonsillitis ), throat, larynx (laryngitis), bronchi (bronchitis), lungs (pneumonia), and skin and other soft tissues.

Other names for this medication:

Similar Products:
Amoxil, Bactrim, Ampicillin, Augmentin, Biaxin


Also known as:  Cefdinir.


Generic Omnicef is a semi-synthetic (partially man-made) oral antibiotic in the cephalosporin family of antibiotics. Like other cephalosporins cefdinir stops bacteria from multiplying by preventing bacteria from forming walls that surround them. The walls are necessary to protect bacteria from their environment and to keep the contents of the bacterial cell together. Bacteria cannot survive without a cell wall. Generic Omnicef is active against a very wide spectrum of bacteria, including Staphylococcus aureus; Streptococcus pneumoniae; Streptococcus pyogenes (the cause of strep throat); Hemophilus influenzae; Moraxella catarrhalis; E. coli ; Klebsiella; and Proteus mirabilis. It is not active against Pseudomonas. Therapeutic uses of cefdinir include otitis media (infections of the middle ear), infections of soft tissues, and respiratory tract infections.

Generic name of Generic Omnicef is Cefdinir.

Omnicef is also known as Cefdinir, Sefdin, Adcef.

Brand name of Generic Omnicef is Omnicef.


Generic Omnicef is taken once or twice daily, depending on the nature and severity of the infection.

The capsules or suspension can be taken with or without food.

Patients with advanced renal disease may need to take lower doses to prevent accumulation of cefdinir since it is eliminated from the body by the kidneys.

For adult infections the usual dose is 300 mg every 12 hours or 600 mg per day for 5-10 days depending on the nature and severity of the infection.

The recommended dose for children 6 months to 12 years of age is 7 mg/kg every 12 hours or 14 mg/kg per day for 5-10 days depending on the infection.

For most infections once daily dosing is as effective as twice daily dosing, though once daily dosing has not been evaluated for the treatment of skin infections or pneumonia.

Do not stop taking Generic Omnicef suddenly.


If you overdose Generic Omnicef and you don't feel good you should visit your doctor or health care provider immediately.


Store at room temperature between 20 and 25 degrees C (68 and 77 degrees F) away from moisture and heat. Throw away any unused medicine after the expiration date. Keep out of the reach of children.

Side effects

The most common side effects associated with Omnicef are:

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Side effect occurrence does not only depend on medication you are taking, but also on your overall health and other factors.


Do not use Generic Omnicef if you are allergic to Generic Omnicef components.

Do not take Generic Omnicef while you are pregnant or have nurseling.

Try to be careful with Generic Omnicef usage in case of having asthma, emphysema or bronchitis along with asthma, certain heart problems (e.g., congestive heart failure, cardiogenic shock, heart block or any conduction or sinus node problems, very slow heartbeat), untreated blood mineral imbalance (electrolyte imbalance), very low blood pressure, kidney or liver problems.

Avoid alcohol.

It can be dangerous to stop Generic Omnicef taking suddenly.

omnicef oral suspension

Cefdinir is a widely used orally administered cephalosporin for community-acquired respiratory tract infections and skin and soft tissue infections (SSTI). A total of 415 nonduplicate isolates of community-acquired SSTI (CA-SSTI) were collected from medical centers in North America and susceptibility tested against cefdinir and various compounds indicated for the treatment of CA-SSTI. The cefdinir MIC(50/90) in microg/mL/% susceptible for strains of the 7 principal CA-SSTI pathogens were: oxacillin-susceptible Staphylococcus aureus (0.5/0.5/100%), oxacillin-susceptible coagulase-negative staphylococci (0.06/0.12/100%), group A streptococci (< or =0.03/< or =0.03/100%), group B streptococci (< or =0.03/0.06/100%), viridans group streptococci (0.25/2/88%), Klebsiella spp. (0.12/1/95%), and Escherichia coli (0.25/0.5/95%). Cefdinir was the most potent oral cephalosporin tested against staphylococci and the Enterobacteriaceae species, and 8-fold to 64-fold more potent than cephalexin against these pathogens. Beta-Hemolytic streptococci was highly susceptible to cefdinir (MIC(90), < or =0.03-0.06 microg/mL), while viridans group streptococci showed slightly elevated MIC results. Cephalexin MIC values for streptococcal strains (MIC(90), 1-32 microg/mL) were 32-fold to 64-fold higher than those of cefdinir or other oral cephalosporins evaluated. Only 0.5% of all 415 recent CA-SSTI pathogens were resistant to cefdinir (MIC, > or = 4 mg/L). Cefdinir showed a spectrum and potency comparable or superior to other orally administered beta-lactams (cephalexin).

omnicef and alcohol interaction

Thirty-five trials involving 7125 patients were included in the meta-analysis. The overall summary odds ratio (OR) for the bacteriologic cure rate significantly favored cephalosporins compared with penicillin (OR: 3.02; 95% confidence interval [CI]: 2.49-3.67, with the individual cephalosporins [cephalexin, cefadroxil, cefuroxime, cefpodoxime, cefprozil, cefixime, ceftibuten, and cefdinir] showing superior bacteriologic cure rates). The overall summary OR for clinical cure rate was 2.33 (95% CI: 1.84-2.97), significantly favoring the same individual cephalosporins. There was a trend for diminishing bacterial cure with penicillin over time, comparing the trials published in the 1970s, 1980s, and 1990s. Sensitivity analyses for bacterial cure significantly favored cephalosporin treatment over penicillin treatment when trials were grouped as double-blind (OR: 2.31; 95% CI: 1.39-3.85), high-quality (OR: 2.50; 95% CI: 1.85-3.36) trials with well-defined clinical status (OR: 2.12; 95% CI: 1.54-2.90), with detailed compliance monitoring (OR: 2.85; 95% CI: 2.33-3.47), with GABHS serotyping (OR: 3.10; 95% CI: 2.42-3.98), with carriers eliminated (OR: 2.51; 95% CI: 1.55-4.08), and with test of cure 3 to 14 days posttreatment (OR: 3.53; 95% CI: 2.75-4.54). Analysis of comparative bacteriologic cure rates for the 3 generations of cephalosporins did not show a difference.

omnicef dose pediatric

The objective of this study was to determine if physicians would alter their prescribing preferences after sampling liquid formulations of medications for common pediatric diagnoses.

omnicef syrup

In a prospective, investigator-blinded, multicenter study, 425 patients, age 6 months-6 years, with a clinical diagnosis of nonrefractory AOM were randomized to receive either 5 days of cefdinir therapy (14 mg/kg divided twice daily) or 10 days of amoxicillin/clavulanate therapy (45/6.4 mg/kg divided twice daily). Clinical response was assessed at end of therapy (2-4 days postantibiotic, respectively) and week 4 (study days 25-28).

omnicef pediatric dosing epocrates

The in-vitro activity of cefdinir (FK482), an orally absorbed aminothiazolyl cephalosporin, was compared with that of cefuroxime, cefixime, cephalexin, cefaclor and co-amoxiclav. Cefdinir was highly active against Staphylococcus aureus, inhibiting 90% of strains at 0.03 mg/L. The respiratory pathogens Haemophilus influenzae, Streptococcus pneumoniae, and Moraxella catarrhalis were also susceptible (MIC90 less than or equal to 1 mg/L). The common members of the Enterobacteriaceae were susceptible (MIC90 less than or equal to 1 mg/L), but those possessing chromosomal beta-lactamases were more resistant. Cefdinir appeared highly stable to the TEM-1 and SHV-1 beta-lactamases with only relatively minor degrees of hydrolysis being seen with TEM-3, -5 and -9.

omnicef 125 mg uses

Because of increasing resistance to older antimicrobial agents, newer drugs need to be evaluated for the treatment of skin and skin-structure infections (SSSIs). This double-masked, randomized, comparative, multicenter study enrolled patients aged 13 years or older with SSSIs to receive either cefdinir 300 mg BID or cephalexin 500 mg QID for 10 days. Nine hundred fifty-two patients (474 in the cefdinir group and 478 in the cephalexin group) took part, primarily white males between 18 and 65 years of age. There were two follow-up visits, with efficacy determined at the test-of-cure visit, 7 to 16 days posttherapy. Many patients were not microbiologically assessable, primarily because of negative cultures at study admission. Patients who required surgical intervention (e.g., incision and drainage) at the site of infection more than 24 hours after the initiation of drug therapy were defined as treatment failures. Significantly more isolated pathogens were resistant to cephalexin than to cefdinir. In the 178 efficacy-assessable cefdinir-treated patients, the rate of pathogen eradication was 93% (200/215), and the rate of successful clinical response was 88% (157/178), compared with 89% (221/247) and 87% (177/204), respectively, in the 204 efficacy-assessable cephalexin-treated patients. Using confidence-interval analysis, the microbiologic and clinical response rates of the cefdinir-treated patients were statistically equivalent to those of the cephalexin-treated patients. At the follow-up visits, patients were questioned about any adverse events occurring since their previous visit. Any untoward symptom occurring during or within 2 days after completion of drug treatment was considered an adverse reaction if the investigator judged it to be definitely, probably, or possibly related to the study drug. One hundred twenty-three (26%) cefdinir-treated patients and 77 (16%) cephalexin-treated patients experienced at least one adverse reaction, a statistically significant difference. Study drug was discontinued for adverse reactions in 20 (4%) cefdinir-treated patients and 13 (3%) cephalexin-treated patients; in the two groups, 10 and 7 patients, respectively, were discontinued for diarrhea. Cefdinir taken BID was as effective as cephalexin taken QID in the treatment of mild-to-moderate SSSIs and was well tolerated by most patients. The increased antibacterial activity of cefdinir must be balanced against the higher rate of diarrhea seen in patients treated with this drug.

omnicef 150 mg

The Alexander Project is a continuing surveillance study, begun in 1992, examining the susceptibility of pathogens involved in adult community-acquired respiratory tract infections (CARTI) to a range of antimicrobial agents.

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omnicef 100 mg 2017-04-13

Cefdinir is an extended-spectrum oral cephalosporin that is active against pathogens commonly seen in acute community-acquired bacterial sinusitis (ACABS), including Streptococcus pneumoniae, buy omnicef Haemophilus influenzae, and Moraxella catarrhalis. Two randomized, investigator-blind, multicenter trials (one in the United States and one in Europe) compared two dosage regimens of cefdinir (600 mg once a day for 10 days and 300 mg twice a day for 10 days) to amoxicillin-clavulanate (A-C) (500 mg three times a day for 10 days) for adult and adolescent patients with ACABS. Twelve hundred twenty-nine patients entered the U.S. study, 698 with antral puncture; 569 patients entered the European study, all with antral puncture. Clinical response (cure or improvement) was determined 7 to 14 days and 3 to 5 weeks posttherapy. Microbiologic eradication rates were determined 10 to 30 days posttherapy in a subset of patients who underwent pre- and posttherapy sinus aspirate culture. Rates of adverse events and treatment discontinuations due to adverse events were examined. Cefdinir, given once or twice daily, was as effective clinically (approximately 90% cure rate) as amoxicillin-clavulanate given three times daily in the treatment of ACABS. Microbiologic eradication rates were also similar in the three groups. The major side effect was mild diarrhea, occurring in approximately 20% of each group. Cefdinir caused fewer adverse events requiring treatment discontinuation.

is omnicef a strong antibiotic 2017-02-20

This study demonstrated that empiric coverage of USSSIs with cephalosporin buy omnicef therapy remains an appropriate clinical strategy. MRSA infections responded well in both arms of the study, suggesting that the choice of a cephalosporin did not adversely affect patient outcome. However, cephalosporins do not have accepted, clinically relevant in vitro activity against MRSA. Hence, the clinical response rates seen in this study against MRSA infections must be interpreted with caution. Cefdinir was more highly rated than cephalexin in a composite usefulness assessment.

omnicef capsules 2015-09-12

Of 393 isolates of Streptococcus pneumoniae from U.S. children collected in 2005-2006, nonvaccine serotypes accounted for 89.1%, with serotype 19A the most prevalent, representing 30.5% of all buy omnicef isolates. The MIC(90) of faropenem against serotype 19A isolates was 1 mug/ml, compared to > or =8 microg/ml against amoxicillin/clavulanate, cefdinir, cefuroxime axetil, and azithromycin.

omnicef pediatric dosing sinusitis 2015-08-27

A total of 80.2% enterococci tested were resistant to vancomycin and 99.6% to multiple-drugs. There was a significant association between haemolytic potential and vancomycin resistance (chi(2), 0.00). Enterococci isolates from healthy equids were significantly (chi(2), 0.04) less resistant Augmentin 875 Mg Oral Tablet to vancomycin than the isolates from clinically sick animals. Besides vancomycin sensitivity, isolates were also tested for 18 more antimicrobial drugs; maximum numbers of isolates were sensitive to imipenem (75%) followed by tetracycline (60%), amoxicillin+clavulanic acid (54%), and minimum for cefdinir (4%).

omnicef o tablet 2016-07-01

The new oral cephalosporins cefpodoxime, cefixime, cefdinir, cefetamet and ceftibuten demonstrate enhanced activity against Enterobacteriaceae susceptible to the established compounds as well (e.g. cefuroxime, cefaclor, cefadroxil). In addition, cefpodoxime, cefixime, cefdinir, cefetamet and ceftibuten include in their spectrum species hitherto resistant to oral cephalosporins (Proteus vulgaris, Providencia spp., Yersinia enterocolitica). Besides, the majority of these compounds demonstrate relevant activity (MIC50 equal to or below 2 mg/l) against Enterobacter spp., Citrobacter freundii, Serratia spp. and Morganella morganii. Ceftibuten is the most potent oral cephalosporin against most of the Enterobacteriaceae. Non-fermentative bacilli (Acinetobacter spp., Pseudomonas spp.) remain completely resistant to oral cephalosporins (except some Acinetobacter species against cefdinir and Pseudomonas cepacia against ceftibuten). Antistaphylococcal activity for oral cephalosporins is highest for cefdinir followed by BAY 3522, cefprozil, cefuroxime and cefpodoxime. Loracarbef, cefaclor and Cipro Dose Uti Elderly cefadroxil are about equally active, while the other compounds are only weakly active (cefixime) or inactive (cefetamet, ceftibuten). Enterococci are insensitive to new generation oral cephalosporins as they have been to established compounds. The most active oral cephalosporins against hemolytic streptococci are cefdinir and cefprozil. Streptococcus pneumoniae, Streptococcus milleri and Streptococcus mitior are most susceptible to cefpodoxime, cefdinir, cefuroxime and BAY 3522. Penicillin resistant pneumococci have to be regarded as resistant to all oral cephalosporins. Fastidious pathogens like Haemophilus spp., Moraxella catarrhalis and Neisseria gonorrhoeae are more susceptible to cefpodoxime, cefixime, cefdinir, cefetamet and ceftibuten than to the other oral cephalosporins. The activity of oral cephalosporins is only weak against Listeria spp., Helicobacter pylori and anaerobic pathogens (except BAY 3522). Bordetella pertussis remains resistant to all absorbable cephalosporins. Progress in antibacterial activity of oral cephalosporins was mainly achieved by cefpodoxime, cefixime, cefdinir, cefetamet and ceftibuten against Enterobacteriaceae and the fastidious pathogens and against staphylococci and the nonenterococcal streptococci by cefdinir, BAY 3522, cefprozil and cefpodoxime.

omnicef 250 5ml dosage 2015-09-25

Fever was reduced and GABHS was eradicated more rapidly from children treated Cefixime Dosage In Pregnancy with cefdinir as compared to amoxicillin.

omnicef tablets 2016-06-07

Affinity for penicillin-binding proteins (PBPs) and the morphological alteration of Staphylococcus aureus 209-P JC and Streptococcus pyogenes C-203 exposed to cefdinir were studied. Although cefdinir was bactericidal against both strains, the extent of the decrease in colony-forming units (CFU) was similar in a fairly wide range of concentrations. Transmission electron microscopy of S. aureus 209-P JC revealed that cefdinir Biaxin Alcohol A Comprehensive View induced thickening of the cross wall and frequent cell lysis at low concentrations. The lytic sites were seen at the site of septum formation. In S. pyogenes C-203, cefdinir induced thickening of the peripheral wall and cross wall, and protoplast-like cells were observed during the incubation period. Cefdinir showed high affinity for all PBPs of S. aureus 209-P JC and S. pyogenes C-203. The drastic changes in the morphology of S. aureus and S. pyogenes were caused by binding of cefdinir to all PBPs.

omnicef antibiotic cefdinir 2017-07-20

Clinical evaluations of cefdinir (CFDN, FK482) were carried out. The obtained results are summarized as follows. 1. Clinical responses to CFDN of 43 patients with pediatric infections were excellent Omnicef O 200 Tablet in 23, good in 15, fair in 4 and poor in 1. The overall efficacy rate was 88%. 2. Bacteriologically, the eradication rate for 34 isolates presumed to be pathogens was evaluated and the eradication rate was 85.3%. 3. Side effects observed were diarrhea in 4 of 48 patients. The incidence was 8.3%. Abnormal laboratory findings were an elevation of GOT, an elevation of eosinophils and an increase in platelet counts. The results suggested that CFDN might be a very useful and safe drug for the treatment of pediatric infections.