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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:
Addcef, Adinir, Aldinir, Cednir, Cefdinirum, Cefdir, Cefida, Ceflosil, Cefnil, Ceftanir, Ceftinex, Cefzon, Cefzone, Kefnir, Palcef, Samnir, Sefdin

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Amoxil, Bactrim, Ampicillin, Augmentin, Biaxin

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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 suspension price

The maximal plasma concentrations and area-under-the-curve values were significantly higher after the 25-mg/kg in relation to the minimum inhibitory concentration values for S. pneumoniae strains. The pharmacodynamics measure of bacteriologic effectiveness was <40% of the dosing interval (ie, 24 hours), indicating that many of the penicillin-nonsusceptible S. pneumoniae causing acute otitis media would not be effectively treated. Diarrhea occurred in 20% of the 39 subjects that received the larger dosage of cefdinir.

omnicef dosage medscape

Antimicrobial efficacy is measured in vitro by determination of minimum inhibitory concentrations (MICs) and minimum bactericidal concentrations (MBCs) of antimicrobials, but these values do not account for fluctuations of drug concentrations within the body or the time course of the drug's in vivo antibacterial activity. However, in vivo bacteriologic efficacy can be predicted by pharmacokinetic/pharmacodynamic (PK/PD) parameters, such as the time for which the serum drug concentration is above the MIC (T>MIC), the ratio of peak serum concentration to the MIC, and the ratio of the area under the 24-h serum concentration-time curve to the MIC (AUC/MIC). Different patterns of antibacterial activity correlate with different PK/PD parameters. For example, a T>MIC of 40-50% of the dosing interval is a good predictor of bacteriologic efficacy for penicillins, cephalosporins, and most macrolides, and an AUC/MIC ratio of at least 25 is required for efficacy with fluoroquinolones and azalides. The PK/PD breakpoint for susceptibility of an organism to a specific dosing regimen of an agent can be determined as the highest MIC met by the relevant PK/PD parameter for bacteriologic efficacy for that agent. These parameters have been validated extensively in animal models, as well as in many human studies where bacteriologic outcome has been determined. The PK/PD breakpoint of an agent is determined primarily by the dosing regimen, and generally applies to all pathogens causing disease at sites where extracellular tissue levels are similar to non-protein-bound serum levels. On this basis, many parenteral beta-lactams are active against almost all strains of Streptococcus pneumoniae, including 'penicillin-non-susceptible' strains, in all body sites except for the central nervous system. Application of PK/PD breakpoints to standard dosing regimens of oral beta-lactams predicts that agents such as cefaclor and cefixime will have efficacy only against penicillin-susceptible strains of S. pneumoniae, while cefuroxime axetil, cefpodoxime and cefdinir will be effective against all penicillin-susceptible as well as many penicillin-intermediate strains. However, the most active oral beta-lactams, amoxicillin and amoxicillin-clavulanate, have predicted efficacy against all penicillin-susceptible and -intermediate pneumococci, as well as against most penicillin-resistant strains, at amoxicillin doses of 45-90 mg/kg per day in children and 1.75-4.0 g/day in adults. These predictions are supported by evidence from animal studies of bacteriologic efficacy. The use of PK/PD parameters to predict bacterial eradication therefore allows an evidence-based approach to the selection of appropriate antimicrobial therapy.

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Oral second and third generation cephalosporins are undergoing continuing research and development in the arena of pediatric infectious disease in an attempt to fill voids created by existing agents in the quest for the "ideal" antimicrobial. This paper reviews the in vitro antimicrobial activity (pharmacodynamics) and pharmacokinetics of cefdinir, an extended spectrum oral cephalosporin, with an emphasis on those aspects relevant to the pediatric patient population.

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cefdinir is safe and effective, shorten the course of treatment in the treatment of mild to moderate bacterial community acquired pneumonia.

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Eighty-six physicians and health care personnel randomly sampled amoxicillin (used as a standard for comparison) and 11 other antibiotics, evaluating them in categories of appearance, smell, texture, taste and aftertaste. Overall scoring was then adjusted for cost, duration of therapy and dosing intervals.

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To compare parent-reported outcomes (satisfaction, tolerability, compliance, and work/daycare missed) for children (aged 6 months to 6 years) receiving either cefdinir or amoxicillin/clavulanate for acute otitis media.

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A simple and sensitive HPLC method was developed to determine cefdinir (CAS 91832-40-5) in human plasma. The method was validated by investigating the accuracy and precision for intra- and inter-day runs in a linear concentration from 0.05-2.0 µg/ml. The object of this study was to compare the bioavailability of cefdinir capsule (reference) and cefdinir granule (test) containing 100 mg of cefdinir. A randomized, open-label, single-dose, 2-way crossover bioequivalence study in 20 healthy, Chinese, male subjects was conducted. A 1-week wash-out period was applied. Blood samples were collected before and with 10 h after drug administration. The formulations were compared using the following pharmacokinetic parameters: AUC0-t, AUC0-∞ and C max. The 90% confidence interval (CI) of the ratios of log-transformed AUC0-t and AUC0-∞ were used to assess bioequivalence between the 2 formulations using the equivalence interval of 80 and 125%. The results showed that the 90% CI of the ratios of AUC0-t, AUC0-∞ and C max were 102.5% (94.7-111.0%), 103.4% (94.8-112.7%) and 106.4% (97.0-116.7%), respectively, which indicated 2 formulations of cefidinir are bioequivalent. Both treatments showed similar tolerability and safety.

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Streptococcus pyogenes and Staphylococcus aureus are often simultaneously detected from many cases of non-bullous impetigo with atopic dermatitis.

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omnicef tablet 2016-05-20

Cefdinir (CFDN) was evaluated for its efficacy and safety. The following results were obtained. 1. Pharmacokinetic study: CFDN was evaluated pharmacokinetically in 4 male children aged 9 to 13. CFDN was given orally to 3 children at a dose of 3 mg/kg. Peak plasma levels of 0.71 microgram/ml, 0.78 microgram/ml and 0.45 microgram/ml were attained in the 3 children, respectively, at 4 hours Uroxatral Dose after dosing. Half-lives of CFDN in serum were 1.78 hours, 1.48 hours and 2.23 hours, respectively. The 12-hour urinary recovery rates of CFDN were 17.4%, 28.1% and 6.2%. When CFDN was given orally to the remaining child at a dose of 6 mg/kg, the peak plasma level was attained at 4 hours after dosing with a level of 1.16 micrograms/ml. T 1/2 was 1.78 hours. The 12-hour urinary recovery rate of CFDN was 15.0%. 2. Clinical study: CFDN 5 percent fine granules were given to 26 patients with infections; 2 with pneumonia, 4 with acute bronchitis, 1 with chronic bronchitis, 12 with pharyngitis, 4 with scarlet fever, 1 with otitis media and 2 with skin and soft tissue infections. Therapeutic responses were "excellent" in 15, "good" in 8, "fair" in 1 and "poor" in 2, with an efficacy rate of 88.5%. 3. Adverse reactions: As for adverse reactions, diarrhea was noted in 1 patient. It was concluded that CFDN is a useful drug for the treatment of the bacterial infections in pediatrics.

omnicef drug interactions 2016-05-30

Clinical and microbiologic evaluations were conducted at multiple times Nexium Dose during and after therapy.

omnicef suspension cost 2016-09-10

Data from 7 randomized, single-blind, cross- Naprosyn Suspension over trials were pooled and analyzed. In each study, children aged 4 to 8 years were asked to taste and smell 2 different antibiotic suspensions and assign preference using a visual smile-face scale. Ratings were converted to a numeric score ranging from 5 (really good) to 1 (really bad).

omnicef 80 mg 2017-10-10

Regarding Neisseria gonorrhoeae, the National Committee for Clinical Laboratory Standards (NCCLS) has not defined the breakpoint minimum inhibitory concentration (MIC) for expanded spectrum cephems such as cefpodoxime and ceftizoxime, because of the absence of resistant strains to these antibiotics. To date, in gonococcal urethritis, after treatment with third generation cephems and aztreonam, clinical failures caused by resistant N. gonorrhoeae strains have not been reported. However, we experienced two clinical failures in patients with gonococcal urethritis treated with cefdinir and aztreonam. N. gonorrhoeae isolates from these two patients showed high-level MICs to these agents. The MIC of cefdinir was 1 microg/ml for both strains and that of aztreonam was 8 microg/ml for both strains, while the MICs of other beta-lactams were also higher than the NCCLS value, except for ceftriaxone, for which the MIC was 0.125 microg/ml for both strains. Moreover, the MICs of fluoroquinolones, tetracyclines, and erythromycin against these two isolates were higher than the NCCLS susceptibility value. These isolates were susceptible to spectinomycin. In N. gonorrhoeae, the emergence of Azulfidine Drug these beta-lactam-resistant isolates is of serious concern. However, a more serious problem is that these isolates were already resistant to non-beta-lactam antimicrobials. In Japan, ceftriaxone has not been permitted for clinical use against gonococcal infections. Therefore, in Japan, patients with gonococcal urethritis caused by these resistant N. gonorrhoeae strains should be treated with cefodizime or spectinomycin.

omnicef infant dosage 2017-09-20

This study is a retrospective cohort study of patients aged 21 years or younger in the Nationwide Children's Hospital ED from May 1, 2012, to October 31, 2012, who had a urinalysis and urine culture performed and were discharged home with empiric antibiotic therapy for presumed UTI. Patients with known urinary tract anomaly or antibiotic use in the previous 7 days were excluded. Confirmed UTI was defined as pyuria (>5 white blood cells per high-power field or Hytrin 1 Mg dipstick positive for leukocyte esterase) and a positive urine culture (≥50,000 colony-forming units/mL of a uropathogen).

omnicef 80ml dosage 2015-02-04

Pharmacokinetic and clinical studies on cefdinir (CFDN) capsule and fine granules in children were performed and the following results were obtained. 1. Plasma level and urinary excretion of CFDN were determined in 10 children with ages 7 to 13 years given single doses of 2.3 to 7.5 mg/kg. Six of the 10 children received the drug orally Colitis Prednisone Dose before meal and the other 4 after meal. Plasma concentration peaked at 2 to 4 hours in the children administered the drug before meal, and at 3 to 4 hours in those given the drug after meal. The 8-hour urinary recovery rate was 18.8%. 2. Clinical efficacies were evaluated in 23 children with bacterial infections. The children were given the drug orally at dose levels of 3.3 to 6.3 mg/kg 3 times a day. Clinical effects of CFDN were excellent in 7 and good in others, hence the overall clinical efficacy rate was 100%. 3. Bacteriologically, 18 of the 19 strains of causative organisms identified were eradicated, with an overall bacteriological eradication rate of 94.7%. 4. As for side effects, loose stool was observed in 1 case, but it disappeared in a few days. In laboratory tests a slight elevation of GOT and GPT were observed in 1 case, but no additional treatment was needed. 5. CFDN is a useful oral antibiotic for the treatment of bacterial infections in pediatric field.

omnicef dosage 2016-03-24

Cross-sectional Avodart Generic Canada survey.

omnicef elixir dosage 2015-09-09

A total of 644 nasopharyngeal isolates of H. influenzae was collected from pediatric acute otitis media (AOM) patients with or without otitis media with effusions (OME) at the clinics of Otolaryngology-Head and Neck Surgery, Wakayama Medical University Hospital and six affiliated hospitals in Wakayama prefecture between January 1999 and December 2003. Minimal inhibitory concentrations (MICs) of ampicillin (AMP), cefditoren (CDN), cefdinir (CFD), cefaclor (CCL), cefpodoxime (CPD), and cefcapene (CFPN) were determined by the microbroth dilution method according to the recommendations of the National Committee for Clinical Laboratory Standards (NCCLS). Types of mutations in PBP3 gene (ftsI) were evaluated by Zovirax Suspension a polymerase chain reaction (PCR)-based genotyping method. ss-Lactamase gene (bla) was also identified by PCR.

omnicef child dose 2017-10-03

We evaluated the beta-lactamase-producing ability and resistance to 20 antibacterial agents of 448 clinically isolated strains of Haemophilus influenzae accumulated from October 2000 to July 2001 (phase 1) and of 376 different strains accumulated from January to June 2004 (phase 2), from institutions that participated in a nationwide Drug-Resistant Pathogen Surveillance Group in Pediatric Infectious Disease. Between phase 1 and phase 2 the proportion of beta-lactamase-negative ampicillin (ABPC)-susceptible (BLNAS) strains declined from 62.9% to 34.3%; the proportions of beta-lactamase-positive ABPC-resistant (BLPAR) strains were 8.3% and 6.4% in phases 1 and 2, but the proportion of beta-lactamase-negative ABPC-resistant (BLNAR) strains increased from 28.8% in phase 1 to 59.3% in phase 2. Comparison of the MIC(90) values of the antibacterial agents for H. influenzae in phase 1 and Prevacid Usual Dosage phase 2 showed that cefcapene, cefpodoxime, ceftriaxone, panipenem, and clarithromycin kept the same level, while cefdinir, faropenem, and rokitamycin showed 2-fold to 8-fold decreases. With the exception of the above antibiotics, all of the other antibacterial agents tested showed 2-fold to 4-fold increases. The MIC(90) values of the beta-lactam drugs for BLNAR were 2-fold to 32-fold higher than the values for BLNAS. The proportion of BLNAR H. influenzae strains rose dramatically over the 3 years between phases 1 and 2. In relation to age, prior administration of antibacterial agents, and attendance at a day nursery as background factors, no significant differences between BLNAS and BLNAR were detected in phase 1. In the phase 2 survey, the proportion of BLNAR strains showed significant differences between children under 3 years and those aged 3 years or more, and there were also significant differences according to whether antibacterial agents, especially beta-lactams, had been administered previously. No significant difference was found in resistant bacteria according to whether or not a child had attended a day nursery.