Neocef

Quick links to important sections

Neocef

Selected form

Medically reviewed

Rosario Oropesa

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Neocef

Property Description
Active ingredient Cefixime
Form Capsule, Tablet, Oral suspension
Pharmacological class Third-generation Cephalosporin Antibiotic
Common use Targeting susceptible bacterial infections
Origin Semisynthetic

Neocef is a prescription-only medication whose active ingredient is Cefixime, which is classified as an antibiotic used against susceptible bacterial infections. Cefixime acts as a potent agent against microbial threats but, like other antibiotics, is consistently confirmed by health authorities to be not effective against illnesses caused by viruses, such as the common cold or influenza.


What Type of Antibiotic is Neocef (Cefixime)?

Neocef contains Cefixime, which is chemically classified as a semisynthetic beta-lactam antibiotic belonging to the third-generation cephalosporin class. This designation is consistently noted across regulatory bodies.

This classification signifies that Cefixime is a chemically-modified derivative of a natural substance, a characteristic that is pharmacologically supported for enhanced stability. The third-generation status of Cefixime provides a broad-spectrum capability, giving it wider utility against various bacterial organisms. Its structure provides improved efficacy against many Gram-negative bacteria compared to earlier cephalosporins. The compound is a single-ingredient product, focusing its medicinal properties entirely through the Cefixime molecule.


Forms, Origin, and General Therapeutic Purpose

Neocef (Cefixime) is intended for oral administration and is supplied in several dosage forms, including capsules, tablets, and a powder for oral suspension. This availability in multiple oral forms is a key distinguishing feature, allowing flexibility for different patient groups.

The medication’s general therapeutic purpose is to help the body overcome illnesses that are specifically caused by the proliferation of susceptible bacteria. This process relies on its bactericidal action, a mechanism clinically recognized for actively killing the target bacteria. The oral suspension form is particularly critical for ease of administration to pediatric patients and others who cannot swallow solid forms, ensuring this essential antibiotic treatment is accessible.

Regulatory References

  1. Third-Generation Cephalosporins - StatPearls - NCBI Bookshelf

What side effects are possible with Neocef?

Possible Side Effects

Like all medications, Neocef (which may contain Cefixime or Ceftriaxone/Sulbactam, depending on the formulation) can cause side effects, though not everyone experiences them. Most side effects are typically mild and temporary.

Common Side Effects

The most frequently reported side effects are gastrointestinal in nature. They can include:

  • Diarrhea (including loose or frequent stools)
  • Nausea and Vomiting
  • Stomach pain or Indigestion

Less Common or Serious Side Effects

Certain side effects are less common but may indicate a more serious reaction. Seek immediate medical attention if you experience any signs of a severe allergic reaction (anaphylaxis), such as:

  • Rash, hives, or severe itching
  • Swelling of the face, tongue, or throat
  • Difficulty breathing or wheezing

Other serious side effects that require medical consultation include:

  • Severe, watery, or bloody diarrhea (may be a sign of a Clostridioides difficile infection)
  • Jaundice (yellowing of the skin or eyes) or other signs of liver problems
  • Unusual bleeding, easy bruising, or signs of low blood cell counts (e.g., fever, sore throat)
  • Changes in urine output (signs of potential kidney problems)

Safety Information and Precautions

  • Allergies: Inform your healthcare provider if you have any known allergies to Neocef, its ingredients, or other cephalosporin or penicillin-type antibiotics, as there is a risk of cross-sensitivity.
  • Medical History: Discuss any history of kidney or liver disease, gallbladder issues, or a severe intestinal disease (colitis) with your doctor, as dosage adjustments or careful monitoring may be necessary.
  • Pregnancy and Breastfeeding: Use during pregnancy should be determined by a healthcare provider after assessing the potential benefits and risks. Neocef may be present in breast milk; consult your doctor if you are breastfeeding.
  • Driving: Since this medication may cause dizziness or confusion in some individuals, exercise caution when driving or operating machinery until you know how the drug affects you.

Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory documents state that an overdose of Neocef (Cefixime) may present with exaggerated forms of known side effects. Common manifestations are often gastrointestinal, potentially resulting in diarrhea, nausea, and abdominal pain.

Severe Manifestations and Emergency Action

A significant, documented risk in the regulatory labeling is the potential for severe Central Nervous System (CNS) toxicity. Elevated drug levels, particularly in patients with renal impairment, may lead to serious neurological events, including seizures, convulsions, or signs of encephalopathy.

Due to the risk of these severe manifestations, regulatory guidance mandates that individuals must seek immediate medical attention following any suspected overdose. Emergency services should be contacted immediately if severe symptoms such as a seizure, collapse, or difficulty awakening occur.

Management and Limitations

The official management approach for Cefixime overdose is defined as symptomatic and supportive treatment. Regulatory bodies explicitly state that no specific antidote exists for Cefixime overdose. Furthermore, Cefixime is not removed in significant quantities from the body by procedures like hemodialysis or peritoneal dialysis, limiting the effectiveness of these interventions in overdose management. If seizures occur, the drug must be discontinued.

Therapeutic Uses of Neocef

What Neocef Treats: Main Uses and Benefits

Neocef (Cefixime) is used in situations involving bacterial infections across several key therapeutic domains. The primary goal is addressing the bacterial cause, which contributes to easing the overall symptom load and **provides supportive relief when symptoms interfere with routine activities.


This medication is commonly used across conditions presenting with acute episodes that involve susceptible bacteria, including acute otitis media (ear infection), pharyngitis/tonsillitis, acute bronchitis, exacerbations of chronic bronchitis, and uncomplicated urinary tract infections (UTIs) and gonorrheal infections. The use of this medication helps address symptom clusters that may become intense, such as localized pain, fever, and disruptive cough or painful urination.

“The therapeutic approach is focused on managing the bacterial cause to support the patient during difficult episodes by easing distress.”

The medication is applied in clinical settings that involve acute or unstable symptom patterns, providing supportive relief when symptoms interfere with routine activities.


Quick Fact: Relief for Systemic Symptoms Neocef is considered relevant in contexts involving heightened systemic burden, supporting patients during episodes of fever and malaise linked to acute bacterial conditions.

Regulatory References

  1. NIH DailyMed official indications

Eligibility and Restrictions for Use

Who can and cannot use Neocef?

The population eligibility for Neocef (Cefixime) is strictly defined by regulatory documents, distinguishing between groups for whom use is established, those with restrictions, and those absolutely contraindicated.

Contraindications and Non-Eligibility

Neocef is contraindicated for patients with a known hypersensitivity to the active substance, Cefixime, or any other drug within the cephalosporin antibiotic class. Furthermore, individuals with a history of severe allergy to penicillins or other beta-lactam antibiotics must not use this medicine due to the risk of cross-hypersensitivity.

Established and Restricted Populations

Use is established for adults and for pediatric patients six months of age or older. Safety and effectiveness have not been established for infants under six months.

Conditional use applies to certain populations. Patients with severely impaired renal function (Creatinine Clearance < 60 mL/min) may be eligible, but their use is restricted by the requirement for a dose adjustment. For pregnant women (Pregnancy Category B), use is restricted to situations where it is clearly needed. Nursing mothers should consider temporary discontinuation of nursing during the course of treatment.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Neocef (Cefixime) is officially documented by health authorities to interact with certain other medicinal products, primarily by altering drug exposure or creating an additive pharmacodynamic risk. No combinations are formally classified as contraindicated due solely to interaction risk.

Drug-Drug Interactions

Co-administration with oral anticoagulants like warfarin and other coumarin-type medicines may enhance their effects, resulting in officially reported increased prothrombin time. This risk is noted to be greater in patients with existing renal or hepatic impairment.

Several substances modify Cefixime's exposure. Probenecid increases Cefixime's plasma levels ( AUC) by decreasing its renal clearance. Similarly, Nifedipine may increase its bioavailability by up to 70%. Conversely, co-administration with high-dose Salicylates may decrease Cefixime exposure by 20–25%. Cefixime has also been reported to cause elevated levels of Carbamazepine.

Additive Risk and Procedural Constraints

  • The risk of impaired renal function is increased when Cefixime is used alongside nephrotoxic substances (e.g., aminoglycosides) or strong-acting diuretics.
  • The medication may reduce the efficacy of oral contraceptives.
  • Cefixime officially interferes with certain laboratory procedures, potentially causing a false-positive reaction for glucose in the urine (using non-enzymatic tests) and a false positive direct Coombs’ test.
  • For administration purposes, Cefixime may be taken without regard to meals.

Mechanism of Action

Irreversible Inhibition of Bacterial Cell Wall Assembly

This domain explains the molecular core of Cefixime's action, focusing on its specific biological targets. The drug directly engages and irreversibly deactivates Penicillin-Binding Proteins (PBPs), the essential bacterial enzymes responsible for the final cross-linking step of the peptidoglycan cell wall. This targeted molecular interference initiates the lethal cascade leading to the structural failure of the bacterial organism's protective layer.


Selective Toxicity and Cascade of Osmotic Lysis

This domain covers the mechanistic consequence of the action: the lytic elimination of the bacteria. By preventing the construction of a rigid cell wall, Cefixime leads to the loss of osmotic stability, causing the internal pressure of the bacterial cell to exceed the structural resistance. This cascade culminates in cell lysis (bursting), which produces the core mechanistic consequence of reduction of susceptible bacterial organisms without affecting human host cells due to its highly specific mechanism.

Dosage and Administration Information

How Neocef (Cefixime) is Used: Administration Guidelines

Neocef, containing the active ingredient Cefixime, is an antibiotic with established administration patterns. The approved route for this medication is oral.


Standard Adult Dosing and Frequency

The standard daily dose for adult patients and children weighing 45 kg or more is 400 mg. This dose may be administered in one of two ways:

  • As a single 400 mg dose taken once daily.
  • As two 200 mg doses, taken every 12 hours.

The medication may be administered without regard to food (with or without meals). For uncomplicated gonococcal infections, the regimen is a single oral 400 mg dose.


Duration and Special Administration Rules

Treatment duration typically ranges from 7 to 14 days for general infections. For infections caused by Streptococcus pyogenes, the full course must be taken for at least 10 days to ensure eradication of the organism.

  • Pediatric Dosing: For children 6 months and older weighing less than 45 kg, the recommended daily dose is 8 mg/kg of body weight, administered once daily or divided into two doses.
  • Renal Impairment: A dose reduction is required for adults with significantly impaired kidney function. For example, the dose is typically reduced to 200 mg daily when the creatinine clearance is le 20 mL/min.
  • Missed Dose: If a dose is missed, it should be taken as soon as remembered. However, the missed dose should be skipped if it is almost time for the next scheduled dose; the dose must never be doubled.

These instructions define the standardized approach to using the medicine, focusing on the approved route, frequency, and necessary dose adjustments.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Neocef (Cefixime)

The research evidence for Neocef was studied for specific clinical conditions across multiple age groups. This overview describes the structure of the studies conducted, what outcomes research examined, and the limitations noted in the existing evidence, using language that is strictly descriptive of the research itself.


Evidence for Use in Acute Infections of the Ear and Throat (AOM, Pharyngitis/Tonsillitis)

Studies relevant to ear and throat infections utilized Randomized Controlled Trials (RCTs) and Systematic Reviews. These research contexts focused heavily on pediatric patients (children and infants) for acute otitis media, and both adults and children for infections of the throat. Researchers monitored outcomes related to physical discomfort and biological outcomes, including measuring the overall resolution of clinical signs and symptoms, as well as the clearance of target bacteria (bacteriological eradication). Findings describe patterns observed in the studies related to bacterial clearance, and studies monitored outcomes related to Streptococcus pyogenes eradication. However, evidence highlights certain areas of variability, particularly in research exploring acute otitis media. Studies reported that the measured bacterial eradication rates were not uniform across all types of causative bacteria, and the outcomes for Streptococcus pneumoniae were observed in some trials. This indicates that while Cefixime was studied for these conditions, the evidence quality varies across the specific pathogens examined.


Evidence for Use in Uncomplicated Urinary Tract Infections (UTIs)

The research for uncomplicated urinary tract infections (UTIs) relies on Randomized Prospective Trials and various retrospective reviews. These studies primarily evaluated adults and some pediatric patients with acute infections. Research examined outcomes that reflected the functional state of the urinary tract, including the resolution of symptoms and the clearance of common urinary pathogens. The reported outcomes in these short-term studies were based on measurements taken immediately post-treatment and up to a few weeks following its completion. Studies reported measurements related to the eradication of the infecting organism, contributing to the broader evidence landscape for agents studied for the eradication of common urinary pathogens. Data for certain groups remain insufficient in this area, as the research primarily focuses on short, acute episodes. There is limited information for long-term outcomes or data structured to address recurrent or complicated UTIs. Therefore, results apply only to the populations studied in these initial short-term acute infection trials.


Key Research Gaps and Remaining Uncertainties

The evidence highlights what is known—and what is still uncertain—about Cefixime. Follow-up durations were limited across the majority of the acute infection studies, meaning the evidence does not allow for full characterization of long-term outcomes. Subgroup findings are uncertain in areas such as severe chronic bronchitis or complicated urinary tract infections, as the research generally focused on less severe, uncomplicated cases. The research also describes patterns related to varied outcomes depending on the specific infecting organism and the anatomical site of the infection, particularly for ear and gonorrheal infections. Continued surveillance of microbial resistance patterns is necessary, as research is ongoing in this area. These study results help show what has been observed so far and research does not determine whether an individual will respond similarly.

Key Studies & References

  1. Evidence-to-decision framework and systematic review to update the WHO treatment recommendations for Neisseria gonorrhoeae
  2. Management of acute otitis media - Database of Abstracts of Reviews of Effects (DARE)
  3. Label: CEFIXIME 400 MG UD- cefixime capsule (DailyMed/FDA)

Frequently Asked Questions (FAQ)

Common questions about Neocef (FAQ)

Q: Is Neocef a brand name or a generic name for the medicine?

Neocef is the brand name used for this medicine. The active ingredient within the drug is Cefixime, which is also referred to as the generic name. Official regulatory documents primarily use the name Cefixime when describing the active substance.

Q: What happens if I stop taking Neocef even though I feel better?

Official guidelines emphasize the importance of completing the full prescribed course of treatment, even if symptoms begin to improve quickly. Regulatory documents caution that early discontinuation may be associated with the development of drug-resistant bacteria. Completing the full course is generally recommended in regulatory documents to ensure the infection is adequately treated.

Q: Are there any food or drinks that must be avoided when taking Neocef?

Official documentation states the medication can be taken without regard to food, meaning administration is permitted with or without meals. Regarding drinks, patients are generally directed to consult with a healthcare professional regarding the concurrent use of alcohol, as drug-alcohol interactions may occur with various medications.

Q: Why do official documents advise against using Neocef in certain high-risk populations?

The need for dose adjustments, particularly for individuals with impaired kidney function, is based on the way the body processes the medication. Regulatory documents explain that the medicine is eliminated from the body more slowly in these circumstances. This slower removal can affect the medication's overall effects and may necessitate a lower prescribed dose, as determined by a healthcare provider.

Q: What is the main purpose of Neocef and what kind of infections does it treat?

Neocef is described in official documents as an antibiotic. Its main purpose is to treat certain bacterial infections. These approved uses include specific types of bronchitis, otitis media (ear infection), pharyngitis (throat infection), tonsillitis, and uncomplicated urinary tract infections.

Q: Is Neocef considered a 'broad-spectrum' or 'narrow-spectrum' antibiotic?

Official sources classify the active ingredient, Cefixime, as a third-generation cephalosporin antibiotic. This class of medication is generally described in authoritative documents as having a broad spectrum of antibacterial activity.

Q: What is the risk of antibiotic resistance if I take Neocef?

Regulatory documents contain a general warning that the use of any antibacterial agents may lead to the selection or development of drug-resistant bacteria. This issue is a central safety concern when prescribing antibiotics.

Q: Is Neocef known to cause stomach upset or diarrhea?

The most common adverse reactions reported in clinical trials are related to the gastrointestinal system. Official documents list symptoms like diarrhea, loose stools, nausea, and abdominal pain as common reactions experienced by patients.

Q: What are the most common side effects reported by patients using Neocef?

The most commonly reported adverse reactions in clinical trials are related to the gastrointestinal system. These include diarrhea, nausea, loose stools, and abdominal pain.

Q: Are there any serious side effects associated with Neocef that I should be aware of?

Official warnings cite the potential for severe hypersensitivity reactions, including anaphylaxis. Another serious potential adverse reaction noted in the warnings is Clostridioides difficile-associated diarrhea (CDAD), which can range from mild to fatal colitis.

Q: Can Neocef cause a rash or allergic reaction?

Yes, hypersensitivity reactions, including skin rashes, angioedema, and severe anaphylactic/anaphylactoid reactions, have been reported with the medicine's use. Regulatory documents advise that the medication should be discontinued immediately if a serious allergic reaction occurs.

Q: Is it normal to feel tired or dizzy while taking Neocef?

The official regulatory label lists potential adverse reactions in the Central Nervous System. These reported effects include both headache and dizziness.

Q: Can Neocef interact with over-the-counter pain relievers like ibuprofen?

Regulatory documents indicate that Cefixime may affect the levels of certain other drugs in the body. This includes nonsteroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen, which compete for the same elimination pathways in the kidneys, according to label information.

Q: Does Neocef affect the effectiveness of birth control pills?

Official documents state that antibiotics like Cefixime may reduce the effectiveness of certain oral contraceptives containing ethinyl estradiol in some women.

Q: Is it safe to consume alcohol while being treated with Neocef?

Official documents advise that patients should consult with a healthcare professional regarding the concurrent use of alcohol while taking the medicine. This discussion is important because drug-alcohol interactions may occur with many medications.

Q: Can Neocef be safely used by pregnant women?

The medicine is classified as FDA Pregnancy Category B. This designation indicates that use is generally recommended only if clearly needed, and if the potential benefit to the mother is determined to outweigh any potential risks to the fetus.

Q: Is Neocef safe for use while breastfeeding?

The drug is known to be excreted into human milk. Official documents state that a decision regarding continuing the medicine versus continuing breastfeeding should be made based on the importance of the drug to the mother, in consultation with a healthcare provider.

Q: Is Neocef contraindicated for people with a history of penicillin allergy?

Official documentation advises that caution should be exercised in penicillin-sensitive patients. This is because cross-hypersensitivity among beta-lactam antibiotics, which includes penicillin and cephalosporins like Cefixime, has been documented.

Q: What types of allergies or medical conditions exclude a person from using Neocef?

The medicine is strictly contraindicated in patients with a known allergy to the cephalosporin class of antibiotics. Official warnings also highlight the need for dose adjustment or caution in patients with severely impaired kidney function.

Q: What are the general safety warnings listed in the official documents for Neocef?

Warnings listed in the official documents include the risks of severe hypersensitivity reactions (like anaphylaxis) and Clostridioides difficile-associated diarrhea. Regulatory sources also caution about the potential for the development of drug-resistant bacteria.

Q: Does Neocef cause problems with the 'good' gut bacteria?

Antibacterial agents are described in regulatory documents as potentially altering the normal flora (bacteria) of the colon. This alteration can sometimes lead to an overgrowth of other bacteria, such as C. difficile, which is associated with gastrointestinal symptoms.

Q: Can I take Neocef if I have a history of liver disease?

Official documents list transient elevations in certain liver enzymes, as well as hepatitis and jaundice, as potential adverse reactions associated with the medication. Official information suggests the importance of consulting with a healthcare provider regarding a history of liver disease or impaired liver function prior to use.

Q: Does Neocef affect the results of any laboratory tests?

Regulatory documents indicate that the medicine may affect the results of certain laboratory tests. Specifically, it may cause false-positive results for urine glucose tests using certain reduction methods (e.g., Clinitest, Benedict's solution).

Q: Is Neocef known to cause headaches?

Yes, official regulatory documents list potential adverse reactions in the Central Nervous System. Headaches are one of the specific effects noted in the product information.

Q: What are the official recommendations for storage of Neocef?

Official storage recommendations state that tablets and the dry powder for oral suspension should be stored at room temperature (20 C to 25 C). Once the oral suspension is mixed, it can be refrigerated or kept at room temperature, but unused portions must be discarded after two weeks, according to regulatory guidelines.

Q: How does the body eliminate Neocef after the course is finished?

The body eliminates the medicine primarily through the kidneys (renal) and the bile (biliary mechanisms). Official pharmacokinetic data indicates that roughly 50% of the dose absorbed into the body is excreted unchanged in the urine within 24 hours.

Q: Does Neocef affect blood sugar levels?

Official documents include a warning that the drug may cause false-positive results when testing for glucose in the urine using certain specific reduction methods. This warning is present to ensure that healthcare providers and patients use appropriate testing methods and consider the potential effect when monitoring blood sugar levels, especially for individuals managing diabetes.

Q: Can Neocef be used for an infection in the eye or ear?

The medication is approved for the treatment of otitis media, which is a bacterial infection of the middle ear. Indications do not generally list use for infections in the eye itself.

Q: How is the safety of Neocef monitored after it is released to the market?

The safety of the medicine continues to be monitored by regulatory agencies after its release. Official labels include specific instructions for patients and healthcare providers to report any suspected adverse reactions to authorities like the FDA, which is a key part of the post-market safety process.

Q: Does Neocef have any known black box warnings in the U.S.?

The official FDA label for Cefixime, the active ingredient, does not currently contain a Black Box Warning. The document does contain important warnings and precautions regarding severe allergic reactions and C. difficile-associated diarrhea.

How should Neocef be stored and disposed of?

How to Store and Dispose of Neocef (Cefixime)

Official regulatory information details specific requirements for the storage and disposal of this medication, which vary by dosage form.

Storage Requirements

Solid Forms (Tablets/Capsules): Store at room temperature (20 C to 25 C) in a tightly closed container. Protect from excess heat and moisture; storage in the bathroom is restricted. Do not freeze.

Oral Suspension (Liquid): The mixed liquid can be kept for up to 14 days at either room temperature or refrigerated (2 C to 8 C). Discard any unused portion after 14 days.

Disposal and Safety

All medicine must be kept out of the sight and reach of children. Unused or expired Neocef should be disposed of using a drug take-back program. If a program is unavailable, mix the medicine with an unappealing substance, seal it in a container, and place it in the household trash. Do not flush the product.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

Available in countries:

Equivalent of Neocef found in:

A-Z Index: