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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 o tablet

The in vitro antibacterial activities of oral cephem antibiotics and ketolide telithromycin against major respiratory pathogens possessing beta-lactam-resistant mutations (within the pbp gene) and/or macrolide-resistant genes (erm and mef) were examined in clinical isolates collected at 66 institutes in all over the Japan between 2002 and 2003. Telithromycin showed the strongest antibacterial activity against methicillinsusceptible Staphylococcus aureus strains with and without macrolide-resistant genes, such as ermA or ermC gene. All the cephem antibiotics showed potent antibacterial activity against Streptococcus pyogenes, with minimum inhibitory concentrations (MICs) of 0.015 mg/L or lower. Cefdinir had a much higher MIC90 against genotypic penicillin-resistant Streptococcus pneumoniae (gPRSP) than cefditoren and cefcapene (8 mg/L cefdinir vs. 1 mg/L cefditoren and cefcapene). The majority of gPRSP harbored either ermB or mefA, and the antibacterial activity of telithromycin against these strains was decreased however some susceptibility was still sustained. Cefditoren exerted the strongest antibacterial activity against beta-lactamase-negative ampicillin-resistant Haemophilus influenzae, with an MIC90 of 0.5 mg/L. These results underline the importance of checking the susceptibility and selecting an appropriate antibiotic against target pathogens.

omnicef medicine

The in vitro activity of FK041, a new orally active cephem antibiotic, against a wide variety of clinical isolates of bacteria was investigated and compared with those of cefdinir (CFDN) and cefditoren (CDTR). FK041 exhibited broad spectrum activity against reference strains of Gram-positive and Gram-negative aerobes and anaerobes. FK041 was active against clinical isolates of Gram-positive organisms except Enterococcus faecalis with MIC90s less than 1.56 microg/ml. FK041 was more active than CFDN and CDTR against Staphylococcus aureus, Staphylococcus epidermidis, and Streptococcus agalactiae and was comparable to CFDN and CDTR against Streptococcus pyogenes and Streptococcus pneumoniae. FK041 had no activity against methicillin-resistant staphylococci, like CFDN and CDTR. FK041 showed moderate activity against penicillin-resistant S. pneumoniae with an MIC range of 0.05 approximately 3.13 microg/ml, and was superior to CFDN but inferior to CDTR. Against clinical isolates of many Gram-negative organisms such as Neisseria gonorrhoeae, Escherichia coli, Klebsiella pneumoniae, and Proteus mirabilis, FK041 had good activity comparable or superior to those of CFDN and CDTR. However, it was inferior to CDTR in activity against Moraxella catarrhalis, Haemophilus influenzae, Morganella morganii, and Serratia marcescens, and was inactive against Pseudomonas aeruginosa. With FK041 a small difference between MIC and MBC against S. aureus, E. coli, K. pneumoniae, and H. influenzae was found, indicating that its action is bactericidal against these species. FK041 was stable to group 2beta-lactamase hydrolysis but was unstable to group 1beta-lactamase hydrolysis. The stability of FK041 to these enzymes was similar to those of CFDN and CDTR. FK041 showed high affinity for the main penicillin-binding proteins (PBPs) of S. aureus (PBP 3, 2, and 1) and E. coli (PBP 3, 4, lbs, 2, and 1a).

omnicef dosing peds

Children aged 1 to 12 years with signs and symptoms of pharyngitis and a positive result on a rapid screening test for Streptococcus pyogenes (ie, a convenience sample). Four hundred eighty-two patients were enrolled in the study, and 440 were clinically and microbiologically evaluable. The most common reasons patients were nonevaluable were failure to return for specified visits and noncompliance with the administration of the medication; 2 patients receiving penicillin V discontinued use of the drug because of adverse events.

omnicef child dose

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 not helping ear infection

The objective of present investigation was to study the effect of gut microbiota alteration by oral administration of targeted delivery of pH sensitive cefdinir microspheres to high-fructose-fed (HFD) rats. Rats were fed with a high-fructose diet with or without cefdinir microsphere administration for 30 days. The fecal microbiota community, oral glucose tolerance, the markers of liver injury, plasma and hepatic lipids profile, and histological evaluation were investigated. The levels of blood glucose, liver injury markers, lipid profile in plasma and liver, and fat tissue were significantly increased in high-fructose-fed rats. However, after pH-sensitive cefdinir microsphere administration, the elevation of these parameters was significantly suppressed. Cef EL significantly lowered the increased AST (p < 0.05) and ALT (p < 0.001) levels in HFD group. There is a significant lower (p < 0.01) AUCglucose level in Cef EL group than HFD group The histological changes in the liver and the small and large intestines were more profound in HFD group as compared to cefdinir-treated HFD and control groups. Feeding of cefdinir microsphere sustained lactobacilli and bifidobacteria and significantly decreased (p < 0.05) the number of Enterobacteriaceae induced by HFD. Experimental evidences demonstrated that the effectiveness of pH-specific cefdinir microsphere on reducing insulin resistance and development of metabolic changes in high-fructose-fed rats and suggested that it may be a promising therapeutic agent in treating type 2 diabetes. Intestinal-targeted antibiotic delivery needs to be further explored for its therapeutic applications.

omnicef antibiotic

Three hundred and ninety-one patients were treated. The treatment groups were well matched with regard to demographic characteristics and types of infection. Abscess(es) (26%), wound infection (24%), and cellulitis (21%) were the most common infections. At the TOC visit, the clinical cure rate for both treatment groups was 89% (151/170 for cefdinir and 154/174 for cephalexin) in clinically evaluable patients (95% CI for difference in cure rates [-6.7 to 7.3]). In the intent-to-treat analysis, cure rates were 83% for cefdinir vs. 82% for cephalexin. Clinical cure rates for infections caused by methicillin-susceptible (MSSA) and methicillin-resistant (MRSA) Staphylococcus aureus were 93% (37/40) and 92% (35/38) for cefdinir vs. 91% (29/32) and 90% (37/41) for cephalexin (p > 0.999 comparing treatment groups for MSSA; p > 0.999 for MRSA). The usefulness questionnaire demonstrated that cefdinir was more highly rated in the mean composite score (87.4 vs. 83.6, p = 0.04), with the difference primarily due to the respondents' preference for the convenience of taking the study medication (mean score 93.5 vs. 74.1 for cephalexin, p < 0.001). The study had the following limitations: the requirement for culture at baseline likely skewed the enrollment of patients towards those with abscesses; the results of culture in patients with USSSIs are often nonspecific; in some patients entering the study with a diagnosis of cellulitis, the cellulitis was associated with an abscess; and, incision and drainage (I&D), spontaneous drainage, and needle aspiration are likely to have contributed to clinical response for purulent infections, and in particular MRSA-associated infections. Both study drugs were well tolerated. The most common treatment-related adverse events were diarrhea (10% cefdinir, 4% cephalexin, p = 0.017), nausea (3% and 6%, respectively, p = 0.203), and vaginal mycosis (3% and 6% of females, respectively, p = 0.500).

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A total of 1011 healthy subjects were randomly assigned to 1 of 2 treatment-order groups; 965 were evaluable for the taste and smell analyses. Baseline demographics of evaluable subjects were similar among test groups. Approximately even proportions of participants were female or male (50.1 % vs 49.9%), most (84.1%) were white, and slightly more participants were aged 7 or 8 years rather than younger (age 4 years, 16.0%; age 5 years, 17.4%; age 6 years, 18.7%; age 7 years, 23.2%; age 8 years, 24.8%). Of the 965 children who tasted both antibiotic suspensions and determined their preference, 798 (82.7%) rated the taste of cefdinir as really good or good (the highest possible ratings); 712 (73.8%) assigned the same ratings to amoxicillin/clavulanate potassium, cefprozil, azithromycin, or generic amoxicillin (P < or = 0.001). With regard to smell, 671 (69.5%) rated the smell of cefdinir as really good or good; 636 (65.9%) assigned these same ratings to the comparator agents (P = NS).

omnicef 300 antibiotics

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

omnicef effectiveness ear infection

The in vivo antibacterial activities of a new oral trinem, sanfetrinem cilexetil (a prodrug of sanfetrinem), were evaluated in comparison with those of cefdinir and amoxicillin. Sanfetrinem cilexetil showed potent efficacy against experimental murine septicemia caused by Staphylococcus aureus, Streptococcus pyogenes, and Escherichia coli and against murine respiratory infections caused by Streptococcus pneumoniae. Likewise, in murine models of respiratory infection by penicillin-susceptible and penicillin-resistant S. pneumoniae, sanfetrinem cilexetil was more effective than amoxicillin in reducing the number of bacteria in infected lungs. These results were reflected in its potent in vitro activity and high levels in plasma.

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omnicef storage 2015-09-27

The maximal plasma concentrations and Biaxin Kidney Infection 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.

is omnicef a penicillin derivative 2017-01-05

目的:研究头孢地尼(cefdinir,CE)与牛血清白蛋白(bovine serum albumin,BSA)之间的相互作用。方法:在优化的实验条件下,运用荧光光谱和紫外-可见光谱法研究CE与BSA之间的相互作用。结果:CE可与BSA形成基态复合物,从而猝灭BSA的内源性荧光,猝灭机制为静态猝灭。通过计算获得了二者在不同温度下的结合常数及结合位点数。通过计算反应热力学参数值,可推断CE与BSA作用力主要为氢键和范德华力,生成的自由能变(Gibbs free energy change,ΔG)为负值,表明CE与BSA的作用过程是一个自发过程。两者的结合部位主要位于亚螺旋域II A中。Hill系数小于1,表明CE有负协同作用。同步荧光光谱表明CE对BSA构象不产生影响,结合位点更接近于酪氨酸。结论:该实验对揭示药物动力学问题及后续头孢类药物的研究开发提供了理论依据 Glevo 500 Drug 。.

omnicef dosing peds 2016-10-26

High performance liquid chromatography tandem mass spectrometry (HPLC MS) has been widely used for β-lactam antibiotics determination. However, its application to identify impurities of these frequently used drugs is not sufficient at present. In this job, characteristic profiles of the collision induced dissociation (CID) spectra of both β-lactams and ring-opened β-lactams were extracted from the MS data of six β-lactam antibiotics and their forty-five impurities, and were Erythromycin Class Of Drugs confirmed by the MS data reported in the literature. These characteristics have been successfully applied to rapid differentiation of β-lactam and ring-opened β-lactam impurities in cefixime, cefdinir, and cefaclor. However, these characteristic profiles can only be obtained under low activating voltage. They did not display in the high energy activated CID spectra. Diagnostic fragmentations for determining the localization of double bond and substituents on the thiazine ring and the side chain were also observed. In addition, several characteristic fragmentations are hopeful to be used to differentiate the configurations of C-2 on the thiazine ring of ring-opened impurities, which is generally disadvantageous of mass spectrometry. Taken together, forty-five impurities were identified from the capsules of cefixime, cefdinir, and cefaclor.

omnicef 80 mg 2017-09-08

We performed pharmacokinetic analyses on 37 infants and children who Azithromycin 6 Pack Dosage were given cefdinir in dosages of 14 or 25 mg/kg once daily for 10 days, for the treatment of respiratory and skin or skin structure infections. Cefdinir plasma concentrations were determined with validated liquid chromatology, and pharmacokinetics and pharmacodynamics were determined in relation to the minimum inhibitory concentration values of S. pneumoniae.

omnicef 300 mg sinus infection 2016-02-29

The value of MIC90 s cefdinir against Suprax Liquid Dosage these bacterial strains except penicillin non-sensitive pneumococci were 0.031-1 mg/L. Cefpodoxime held similar antibacterial activity with cefdinir, but was less potent against staphylococci. Cefaclor had much higher MIC values than other two drugs. After oral administration of 250 mg cefaclor, the drug concentration quickly reached peak concentration of 4.95 mg/L +/- 2.41 mg/L and the eliminative half time was 0.69 h +/- 0.6 h; the Tmax, Cmax and T1/2beta of cefdinir and cefpodoxime after oral administration of 100 mg were 2.5 h +/- 0.48 h, 0.81 mg/L +/- 0.19 mg/L, 1.73 h +/- 0.3 h and 2.38 h +/- 0.43 h, 1.12 mg/L +/- 0.28 mg/L, 1.92 h +/- 0.55 h, respectively. T > MIC of cefdinir in thrice daily administration were longer than 40% of medication interval against most of the tested isolates; no T > MIC period was found in cefpodoxime against staphylococci and the T > MICs of cefaclor after 250 mg oral administration were shorter than expected values against most bacteria.

omnicef pediatric dosing sinusitis 2016-11-14

The present study describes a database on the natural susceptibility of Listeria spp. to a wide range of Ciproxina Xr 1000 Mg Indicaciones antibiotics, which can be used to validate susceptibility testing results of these microorganisms.

omnicef dosing instructions 2017-03-29

Several multilaboratory studies to determine quality control (QC) ranges for a variety of National Committee for Clinical Laboratory Standards (NCCLS) susceptibility tests are summarized. Replicate testing used multiple lots of media and antimicrobial disks in accordance with NCCLS recommendations, including the appropriate medium modifications for tests with Haemophilus spp. and Neisseria gonorrhoeae. QC ranges for MIC and disk diffusion testing of N Ilosone Suspension 250 Mg Dosis . gonorrhoeae ATCC 49226 were proposed for cefepime, cefetamet, cefmetazole, and cefpodoxime. Disk diffusion QC ranges for Haemophilus influenzae ATCC 49247 or ATCC 49766 were recommended with cefepime, cefetamet (10- and 30-microgram disks), cefmetazole, cefpodoxime, and cefprozil. Disk diffusion QC ranges for Staphylococcus aureus ATCC 25923 and Escherichia coli ATCC 25922 with cefdinir and clinafloxacin and those for Pseudomonas aeruginosa ATCC 27853 with clinafloxacin were also proposed.

omnicef 300 antibiotics 2015-08-11

The aim of the present study was to develop nonionic surfactant based vesicles (niosomes) to improve poor and variable Suprax 400 Mg Uses oral bioavailability of cefdinir.