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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:
Cefdinir, Cefix, Cefixima, Cefixime, Cefspan, Ceftas, Ceftinex, Denvar, Hifen, Mahacef, Milixim, Novacef, Omnix, Oroken, Sefdin, Suprax, Taxim, Topcef, Tricef, Unixime, Ziprax

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 300 mg

This review updates the 2001 review findings on diagnosis and treatment of uncomplicated AOM, assesses the evidence for treatment of recurrent AOM, and assesses the impact of the heptavalent pneumococcal conjugate (PCV7) vaccine on the microbiology of AOM.

omnicef oral suspension

Ten% cefdinir (CFDN, FK482) granular preparation, a new oral cephalosporin preparation intended for children, was given to children with various infections. The results obtained are summarized as follows. 1. Ten% CFDN granules were administered to a total of 21 children with upper or lower respiratory tract infections, urinary tract infections or infectious impetigo at daily doses of 6.4-18 mg/kg divided into 3 portions. Clinical efficacies were "excellent" in 13 patients, "good" in 7 patients and "unknown" in 1 patient (viral infection), hence an efficacy of 100% was obtained. 2. Bacteria identified in various disease cases included 19 strains of 7 species, and the eradication rate was 100%. 3. No side effects were noted in any of the children. Laboratory test results showed an abnormality in 1 case with eosinophilia. These results suggest that 10% CFDN granules as well as 5% CFDN granules may be a very useful and safe drug for the treatment of pediatric infections.

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This study explores the killing kinetics within 12 h of four oral third-generation cephalosporins against ten Streptococcus pneumoniae strains exhibiting cefotaxime minimum inhibitory concentrations (MICs) from 0.03 to 2 microg/ml. Killing curves were performed with concentrations achievable in serum after standard doses (0.015-4 microg/ml). Reductions of 90% were achieved with all compounds at serum-achievable concentrations for strains exhibiting cefotaxime MIC < or = 0.5 microg/ml. Against strains with cefotaxime MIC > or = 1 microg/ml, only cefditoren reached a 90% reduction with concentrations of 0.5-1 microg/ml doses. At 4 microg/ml, cefditoren and cefotaxime reached 99.9% reduction in seven of the ten strains studied. At serum-achievable concentrations, cefdinir and cefixime were not bactericidal against strains exhibiting cefotaxime MIC > or = 0.25 microg/ml and > or = 0.5 microg/ml, respectively. Cefditoren showed the best killing kinetic profiles and this observation may be important when choosing an oral third-generation cephalosporin as initial or sequential therapy.

omnicef penicillin

Pneumococcal resistance to antimicrobials presents problems to physicians for empirical treatment of acute otitis media (AOM). Three hundred thirty-three isolates of Streptococcus pneumoniae selected for nonsusceptibility to penicillin (MIC >0.1 microg/ml) from the middle ear (n = 325) or mastoid (n = 8) of children seen between 1994 and 2000 at four children's hospitals in the United States were tested by broth microdilution for susceptibility to nine antibiotics. Using NCCLS 2002 breakpoints, resistance to the following drugs was as indicated: amoxicillin, 1%; azithromycin, 71%; cefprozil, 71%; ceftriaxone, 2%; cefdinir, 98%; erythromycin, 70%; levofloxacin, 0%; and trimethoprim-sulfamethoxazole, 93%. Of the penicillin- and erythromycin-nonsusceptible isolates, 97% were inhibited by cethromycin (ABT-773) and 83% were inhibited by telithromycin at a concentration of

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The Accreditation Council for Graduate Medical Education mandates pediatric emergency medicine (PEM) fellowships to incorporate medical care cost teaching into the curriculum; however, there are no studies evaluating cost awareness of PEM fellows. Our objectives were to evaluate cost education during fellowship and assess fellows' knowledge and attitudes regarding costs.

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The S. pyogenes cells in the stationary growth phase alone were strongly stained with fluorescein isothiocyanate-concanavalin A (FITC-ConA), and this staining was reduced by pretreatment with amylase. Although the components of sugars in glycocalyx produced by S. pyogenes cells are unknown, we suggested that the materials stained by FITC-ConA were consistent with the presence of ConA-reactive sugars in glycocalyx produced by S. pyogenes cells.

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S. pyogenes cells associated with streptococcal impetigo skin and croton-oil inflamed mouse skin formed microcolonies encircled by materials (glycocalyx) that stained strongly with FITC-ConA, and these findings were consistent with those in biofilms. In croton-oil inflamed mouse skin, polymorphonuclear leukocytes (PMNs) infiltrated to just below the epidermis in the cefdinir-treated group but only to the middle dermis in the cefdinir-non-treated group. In this case S. pyogenes and S. aureus cells formed separate microcolonies and existed independently in the outer walls of pustule lesions of streptococcal impetigo.

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A novel isocratic reversed-phase high performance liquid-chromatography/ultraviolet detection method for simultaneous determination of cefdinir and cefixime in human plasma was developed and validated after optimization of various chromatographic conditions and other experimental parameters. Sample preparation based on a simple extraction procedure consisting of deproteination and extraction with 3 parts of 6% trichloroacetic acid aqueous solution followed by volume make up with the aqueous component of the mobile phase obtained best recoveries of the two analytes. Samples were separated on a Supelco Discovery HS C(18) (150 mm × 4.6 mm, 5 μm) analytical column protected by a Perkin Elmer C(18) (30 mm × 4.6 mm, 10 μm) guard cartridge. The mobile phase, methanol/acetonitrile (50/50, v/v):0.05% trifluoroacetic acid (19:81, v/v), operated at 50°C column oven temperature was pumped at a flow rate of 2.0 mL min(-1) and the column eluents were monitored at a wavelength of 285 nm. When Sample was injected into the Perkin Elmer high performance liquid-chromatography system through Rheodyne manual (or auto-sampler) injector equipped with 20 μL loop, separation was achieved within 4 min. The present method demonstrated acceptable values for selectivity, linearity within the expected concentration range (0.004-5.0 μg mL(-1); r(2)>0.999 for both analytes), recovery (>95% for cefdinir and >96% for cefixime), precision (%RSD<2.0 for cefdinir and <2.2 for cefixime), sensitivity (limit of detection: 1 ng mL(-1) and lower limit of quantification: 4 ng mL(-1) for both analytes), stability of solutions, and robustness. The method was efficiently applied to a pharmacokinetic study in healthy volunteers.

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L-084 (a prodrug of LJC 11,036 [L-036]) is a new oral carbapenem. Here we compared the in vitro and in vivo antibacterial activities of L-036 with those of imipenem, faropenem, ceditoren-pivoxil, cefdinir, amoxicillin, and levofloxacin. The MICs at which 90% of the isolates were inhibited of L-036 against methicillin-susceptible staphylococci, Streptococcus pneumoniae including penicillin-resistant organisms, Escherichia coli, Klebsiella pneumoniae, Haemophilus influenzae including ampicillin-resistant organisms, Legionella pneumophila, and Moraxella catarrhalis were equal to or less than 1 microg/ml. In pharmacokinetics studies of L-084 in lungs of mice, the maximum concentration in serum, half-life, and area under the concentration-time curve of this drug were 9.09 microg/g of tissue, 6.18 h, and 31.0 microg. h/ml, respectively. In murine respiratory infection models of penicillin-susceptible and -resistant S. pneumoniae and H. influenzae, the efficacies of L-084 were better than those of reference drugs. Our results indicate that the in vitro high potency and good distribution in the lungs might be the underlying mechanisms of its efficacy in the murine model of pneumonia.

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omnicef dosage peds 2015-04-30

We examined the attachment of Staphylococcus aureus to plastic tissue-culture coverslips after incubation for 24 h. The attachment to coverslips was weaker in rabbit plasma with 5% zinc oxide (ZnO) than in the control rabbit plasma without ZnO (P < 0.01). Plasma coagulation by S. aureus strains was not detected in plasma with 5% ZnO after incubation for 24 h. The membranous structure (an immature biofilm) was formed on the coverslips by S. aureus cells in plasma after incubation for 24 h. The colony counts of S. aureus cells on the membranous structures were lower in plasma with 5% ZnO, plasma with 0.2% hinokitiol, plasma with 5% ZnO + 0.2% hinokitiol, plasma with cefdinir at 4 minimum inhibitory concentration (MIC) and plasma with levofloxacin at 4 MIC, than in the control plasma after incubation for 24 h (P < 0.01). The colonies on the membranous structures completely Ectaprim 80 Mg disappeared in the case of plasma with 5% ZnO and 0.2% hinokitiol. The colony counts on membranous structures were lower in plasma with cefdinir at 4 MIC or levofloxacin at 4 MIC containing 5% ZnO than in plasma with cefdinir at 4 MIC or levofloxacin at 4 MIC only, (P < 0.05). The MICs of hinokitiol against S. aureus strains peaked at an MIC distribution of 16-32 micrograms/ml. The peak shifted to below 1 microgram/ml by adding 5% ZnO in agar plate method. The results suggest that the attachment of S. aureus cells to the coverslips is suppressed in the presence of 5% ZnO and that antistaphylococcal activities of cefdinir, levofloxacin and hinokitiol increase in the presence of 5% ZnO.

omnicef o tablet 2015-08-18

Cefdinir exhibits broad range in vitro activity against Gram-positive and Gram-negative aerobes. It exhibits superior activity against Ampliron Amoxicilina 750 Mg Gram-positive aerobes, compared with drugs like cefixime, ceftibuten, cefuroxime and cefpodoxime. In addition it is stable to hydrolysis by many of the common betalactamases. The pharmacokinetic parameters of cefdinir in children are similar to those obtained in adults using similar milligram per m2 doses (300, 600 mg in adults = 7, 14 mg/kg in children, respectively).

omnicef 300 mg capsules 2015-01-22

CS-834 is a novel oral carbapenem antibiotic. This compound is an ester-type prodrug of the active metabolite R-95867. The antibacterial activity of R-95867 was tested against 1,323 clinical isolates of 35 species and was compared with those of oral cephems, i.e., cefteram, cefpodoxime, cefdinir, and cefditoren, and that of a parenteral carbapenem, imipenem. R-95867 exhibited a broad spectrum of activity covering both gram-positive and -negative aerobes and anaerobes. Its activity was superior to those of the other compounds tested against most of the bacterial species tested. R-95867 showed potent antibacterial activity against Hiconcil 250 Mg Ulotka clinically significant pathogens: methicillin-susceptible Staphylococcus aureus including ofloxacin-resistant strains, Streptococcus pneumoniae including penicillin-resistant strains, Clostridium perfringens, Neisseria spp., Moraxella catarrhalis, most members of the family Enterobacteriaceae, and Haemophilus influenzae (MIC at which 90% of strains are inhibited, < or =0.006 to 0.78 microg/ml). R-95867 was quite stable to hydrolysis by most of the beta-lactamases tested except the metallo-beta-lactamases from Stenotrophomonas maltophilia and Bacteroides fragilis. R-95867 showed potent bactericidal activity against S. aureus and Escherichia coli. Penicillin-binding proteins 1 and 4 of S. aureus and 1Bs, 2, 3, and 4 of E. coli had high affinities for R-95867. The in vivo efficacy of CS-834 was evaluated in murine systemic infections caused by 16 strains of gram-positive and -negative pathogens. The efficacy of CS-834 was in many cases superior to those of cefteram pivoxil, cefpodoxime proxetil, cefdinir, and cefditoren pivoxil, especially against infections caused by S. aureus, penicillin-resistant S. pneumoniae, E. coli, Citrobacter freundii, and Proteus vulgaris. Among the drugs tested, CS-834 showed the highest efficacy against experimental pneumonia in mice caused by penicillin-resistant S. pneumoniae.

omnicef liquid dosage 2017-09-08

Two dosage regimens of cefdinir were compared with amoxicillin/clavulanate for Synulox Dose Cats the treatment of suppurative acute otitis media (AOM) in children.

omnicef bladder infection 2017-06-24

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. Dalacin T Lotion Prices 54). Analysis of comparative bacteriologic cure rates for the 3 generations of cephalosporins did not show a difference.

omnicef tablet 2016-01-07

A 5-day regimen of cefdinir was Macrobid 100 Dosage effective in the eradication of the common causative pathogens of nonrefractory AOM, including intermediate penicillin-resistant S. pneumoniae and beta-lactamase-producing organisms. Cefdinir should be considered a suitable second line antibiotic for AOM.

omnicef syrup 2016-10-06

Antibacterial activities of gatifloxacin (GFLX) and other antibacterial drugs against various fresh clinical strains (800 isolates) isolated from specimens of patients in 2002 were compared. GFLX was more active than levofloxacin and ciprofloxacin against Gram-positive bacteria such as methicillin susceptible Amoxicillin 400 Mg Price Staphylococcus aureus and Streptococcus pneumoniae. For these isolates, clarithromycin and azithromycin were less active (MIC90; > 16- > 64 micrograms/mL), GFLX was more active than cefdinir. For Escherichia coli, Klebsiella pneumoniae, Acinetobacter species, Haemophilus influenzae and Moraxella (Branhamella) catarrhalis, three quinolones including GFLX were potently active (MIC90; < or = 0.06-0.5 microgram/mL). Pseudomonas aeruginosa isolated from urinary tract infections were resistant to three quinolones including GFLX (MIC90; 32-64 micrograms/mL), however P. aeruginosa isolated from respiratory and otolaryngological infections were more susceptible (MIC90; 0.5-2 micrograms/mL). Quinolones were less active against Neisseria gonorrhoeae as compared with the cephem antibiotics tested, but GFLX was the most active against N. gonorrhoeae among the quinolones tested. In this study, we investigated activity of GFLX against fresh clinical strains isolated early in 2002, GFLX is widely and potently active against S. aureus, S. pneumoniae and various Gram-negative bacteria.

omnicef alcohol side effects 2017-06-30

The therapeutic activities of orally administered FK041 were evaluated in mouse models of systemic and local infections with a variety of bacteria and were compared with those of cefdinir (CFDN) and cefditoren pivoxil (CDTR-PI). FK041 exhibited potent therapeutic activity against lethal systemic infections induced by intraperitoneally inoculated Staphylococcus aureus, Escherichia coli, and Klebsiella pneumoniae with 50% effective doses (ED50) in the range of 0.20 to 0.36 mg/kg and was more active than CFDN and CDTR-PI. This result correlated well with its in vitro activity. The therapeutic effects of FK041 and reference drugs on murine local infections were evaluated in an in vivo pharmacokinetic model simulating human plasma concentrations for oral administration of 50 mg, 100 mg, and 200 mg. Against murine subcutaneous abscess induced by S. aureus, FK041 was as effective as CFDN and significantly more effective than CDTR-PI in reducing the number of recoverable viable bacteria in the skin at the infection sites. The efficacy of FK041 Trifamox Duo Suspension Presentacion against murine pneumonia with H. influenzae was comparable to that of CDTR-PI and was superior to that of CFDN in reducing viable bacteria activity in the lungs. These results strongly suggest that FK041 has potential for clinical use against various bacterial infections.

omnicef 300 mg used treat 2015-01-12

Observation without initial antibiotic therapy was accepted as an option for acute otitis media (AOM) management in the 2004 American Academy of Pediatrics and American Academy of Family Physicians clinical practice guideline. The guideline also recommended amoxicillin as the first-line treatment for most children, and analgesic treatment to reduce pain if it was present. Our objective was to compare the management of AOM after publication of the 2004 guideline.