Augmentin 457

Quick links to important sections

Augmentin 457

Treatment option:

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 Augmentin 457

Quick Facts

Property Description
Active Ingredient Amoxicillin and Clavulanic Acid
Form Powder for Oral Suspension (liquid after mixing)
Pharmacological Class Penicillin/\beta-Lactamase Inhibitor (Broad-spectrum Antibiotic)
Target Administration Oral
Classification Fixed-Dose Combination Product

What Type of Medicine is Augmentin 457?

Augmentin 457 is a prescription-only antibacterial agent, recognized by its generic combination name, co-amoxiclav (Amoxicillin and Clavulanic Acid). It is officially classified as an antibiotic belonging to the penicillins/\beta-lactamase inhibitor drug class. The product's distinctive feature is its concentration, as the "457" designation specifically refers to a higher-strength oral suspension formulation often tailored for pediatric patients. The Amoxicillin component is a semi-synthetic derivative of penicillin, while the Clavulanic Acid component originates from microbial fermentation processes.

Amoxicillin, Clavulanic Acid, and the Oral Suspension Form

The medicine is a fixed-dose combination product containing two active ingredients: Amoxicillin (as Amoxicillin Trihydrate) and Clavulanic Acid (as Potassium Clavulanate). It is administered via the oral route and is supplied as a powder for oral suspension, which requires mixing with water to create a liquid medicine. This liquid formulation is frequently chosen for patients who may have difficulty swallowing tablets, a differentiating feature from tablet forms of the same combination. Pharmacological studies confirm that this combination is clinically recognized for its ability to treat infections caused by bacteria that have developed resistance to standard penicillins.

The Synergistic Purpose of the Combination

The central purpose of this medicine is to provide a more reliable and effective approach to treating bacterial infections where resistant strains may be present. This efficacy is due to a synergistic action: Clavulanic Acid serves a protective role by inactivating the defensive bacterial enzymes, known as \beta-lactamases, that would otherwise destroy the Amoxicillin. This function enables the Amoxicillin to perform its primary purpose of disrupting the bacterial cell wall, making the overall medicine effective against a broader spectrum of microorganisms.

What side effects are possible with Augmentin 457?

Possible Side Effects and Safety Information

The official safety profile for co-amoxiclav (Amoxicillin and Clavulanic Acid) classifies documented adverse reactions according to frequency and the organ system affected, as established by regulatory authorities. This structure separates high-frequency events from rare, severe reactions.


Frequency-Classified Adverse Reactions

Classification Examples of Documented Reactions System-Organ Class Involved
Very Common Diarrhoea Gastrointestinal Disorders
Common Nausea, Vomiting, Skin rash, Mucocutaneous candidiasis Gastrointestinal, Skin, Infections
Uncommon Dizziness, Headache, Indigestion, Transient liver enzyme increases Nervous System, Gastrointestinal, Hepatobiliary

Serious Adverse Reactions and Safety Constraints

The most clinically significant adverse reactions, though rare, include severe, potentially fatal hypersensitivity reactions such as Anaphylaxis and severe skin conditions like Stevens-Johnson syndrome (SJS). Hepatitis and Cholestatic Jaundice are also documented serious hepatobiliary events.

Safety documents specify constraints for use: The medicine is contraindicated in individuals with a history of severe immediate allergic reaction to any penicillin or other beta-lactam agent. It is also contraindicated in patients with a history of hepatic dysfunction or cholestatic jaundice associated with prior co-amoxiclav use.

Time-related patterns are noted, such as hypersensitivity reactions often occurring early in therapy, while hepatic dysfunction may appear during or shortly after treatment, sometimes with a delayed onset of several weeks. Dosage adjustment is required for patients with documented renal impairment.

Overdose and Emergency Response

In the event of ingesting a dose significantly exceeding the prescribed amount, the official regulatory profile for Augmentin 457 (Amoxicillin and Clavulanic Acid) describes specific clinical manifestations and actions that must be taken. Documented overdose presentations commonly involve the gastrointestinal system, resulting in nausea, vomiting, diarrhea, and stomach pain. Central nervous system effects may also occur, including drowsiness or hyperactivity.

Severe or life-threatening outcomes requiring urgent attention include convulsions (seizures) and the development of crystalluria, a condition characterized by crystals in the urine. These severe neurological risks are particularly noted in patients with impaired renal function or following the intake of high doses.

Regulatory authorities mandate that immediate medical attention must be sought for a suspected overdose. It is required to call emergency services if the individual experiences a seizure, collapses, has trouble breathing, or cannot be awakened.

Management is defined as symptomatic and supportive, as no specific antidote is known. Procedures documented in official prescribing information include maintaining adequate fluid intake and urinary output to mitigate the risk of crystalluria, and the use of hemodialysis to remove the active ingredients from the systemic circulation.

Therapeutic Uses of Augmentin 457

What Augmentin 457 Treats: Main Uses and Benefits

Augmentin 457 is commonly used for therapeutic support against bacterial infections that are often challenging to address with standard antibiotics. Its uses center on conditions presenting with acute or disruptive episodes affecting the ears, lungs, sinus, skin, and urinary tract. It is generally applied when additional symptomatic support is needed to address bacterial resistance.

Support for Acute Symptomatic Episodes

This medicine helps address symptom clusters that may become intense or disruptive, such as those related to Acute Otitis Media (ear infections) and sinusitis. Therapy may assist in easing pain, fever, and congestion, which contributes to improved comfort during periods of heightened symptoms. This supportive use is particularly relevant when infections are suspected to be caused by bacteria resistant to common treatments.

Addressing Difficult-to-Manage Infections

Augmentin 457 is primarily relevant in situations where symptoms are caused by bacteria suspected of being resistant to the effects of Amoxicillin alone. This supportive therapeutic benefit extends to managing infections of the skin and soft tissues and specific urinary tract infections. It supports patients during difficult episodes by assisting the body's process to address the underlying infection, which helps ease the overall symptom load.


Quick Fact: Symptom Management

Property Description
Symptom Axes Symptoms related to physical discomfort and systemic imbalance
Condition Context Applied in conditions characterized by periods of heightened symptoms
Primary Benefit Provides support to help ease the overall symptom burden

Regulatory References

  1. NIH MedlinePlus Drug Information

Eligibility and Restrictions for Use

The eligibility for Augmentin 457 (Amoxicillin and Clavulanic Acid 400 mg/57 mg per 5 mL oral suspension) is strictly defined by government regulatory agencies. The rules detail who is officially approved to use the medicine and who is formally excluded, often due to specific conditions or age limitations.


Contraindicated Populations

Use is prohibited in individuals with:

  • A history of hypersensitivity to any penicillin or other beta-lactam antibacterial drugs (e.g., cephalosporins).
  • A previous history of jaundice or hepatic dysfunction associated with the use of this drug combination.

Age and Condition Restrictions

Category Regulatory Status
Children under 2 months Use is not established; there are no clinical data to support dosage recommendations for this specific formulation (457 mg/5 mL).
Severe Renal Impairment Not recommended for patients with a creatinine clearance of less than 30 mL/min.
Infectious Mononucleosis Use should be avoided due to a high risk of developing a non-allergic skin rash.
Hepatic Impairment Use requires caution; liver function should be monitored.
Pregnancy (First Trimester) Use should be avoided unless deemed essential by a physician.
Breastfeeding Use is generally acceptable, though the drug components pass into breast milk.

Generally, the oral suspension is intended for children and for adults who have difficulty swallowing, provided they meet all other eligibility criteria.

What should I know about interactions with other medicines?

Interactions with other medicines and products

This section summarizes documented interactions for Augmentin 457 (amoxicillin/clavulanate) based on official regulatory labeling. Consult a healthcare professional for specific medical advice.

Documented Pharmacokinetic and Pharmacodynamic Interactions

Interacting Product Category Effect and Monitoring Requirement
Probenecid (Gout Agent) Decreases the renal tubular secretion of amoxicillin, leading to increased and prolonged blood levels of amoxicillin. Co-administration is generally not recommended.
Oral Anticoagulants (e.g., Warfarin) Requires close monitoring of International Normalized Ratio (INR) and Prothrombin Time (PT), as potentiation of the anticoagulant effect has been reported. Dose adjustment may be necessary.
Allopurinol Concurrent use significantly increases the incidence of allergic skin rash (morbilliform).
Methotrexate May result in increased exposure to methotrexate, potentially increasing the risk of toxicity. Monitoring for signs of toxicity is required.

Other Relevant Interactions

Oral Contraceptives: Efficacy may be reduced. Live Oral Typhoid Vaccine: The antibiotic may inactivate the vaccine, requiring avoidance during and shortly after treatment.

Food: Taking Augmentin 457 at the start of a meal enhances the absorption of the clavulanate component, which can help minimize gastrointestinal discomfort.

Mechanism of Action

How Augmentin 457 Works: Mechanism of Action


Targeting the Core: Irreversible Inhibition of Cell Wall Synthesis

This domain covers the action of amoxicillin, which targets essential bacterial enzymes called Penicillin-Binding Proteins (PBPs) , key components in the final structural assembly of the bacterial cell wall. By binding covalently and irreversibly to these PBPs, amoxicillin prevents the necessary cross-linking of the peptidoglycan layer. This inhibition compromises the structural integrity of the cell wall. The weakened wall cannot withstand the high internal osmotic pressure, leading to the activation of bacterial autolytic enzymes, resulting in cell rupture and death (a bactericidal effect). This mechanism leads to the elimination of susceptible bacteria.


The Synergy: Neutralizing Bacterial beta-Lactamase Defense

This cluster focuses on clavulanic acid, an irreversible inhibitor of beta-lactamase enzymes , which are produced by some bacteria as a defense mechanism. By neutralizing these defense enzymes, clavulanic acid protects amoxicillin from hydrolysis, enabling its activity against susceptible strains that produce beta-lactamase. This synergy allows the bactericidal cascade to proceed against these resistant strains. The inactivation of beta-lactamase allows the amoxicillin component to maintain its antibacterial effect against bacterial colonies that would otherwise be protected.

Dosage and Administration Information

How to Use Augmentin 457: Official Administration Guidelines

Augmentin 457 is a high-strength oral suspension for the combination of amoxicillin and clavulanic acid. Its use is strictly defined, focusing on specific dosing, preparation, and administration conditions.

Official Route and Timing

This formulation is approved solely for the oral route of administration. To ensure proper absorption of clavulanic acid and to minimize potential digestive discomfort, each dose must be taken at the start of a meal. The recommended schedule is twice daily (every 12 hours).

Dosing and Duration

Population Focus Dosing Principle (Based on Amoxicillin Component) Duration of Use
Pediatric Patients (<40 kg) Dosing is weight-based, calculated in mg/ kg/ day, and administered in two divided doses. Treatment courses generally last 7 to 10 days and should not exceed 14 days without re-evaluation.

Preparation and Procedural Steps

The medicine is supplied as a dry powder that requires reconstitution with the specified amount of water to create a liquid suspension. The bottle must be shaken vigorously after adding the water and shaken well before each measured dose. Doses must be measured using a calibrated dosing device to ensure accuracy. The reconstituted product must be stored in a refrigerator.

Special Administration Conditions

This specific 7:1 ratio formulation is generally not recommended for patients with significant renal impairment (creatinine clearance < 30 mL/ min). Patients who miss a dose should take it as soon as they remember, ensuring the next dose is taken approximately 12 hours later.

Recent Clinical Evidence

Research Evidence: Overview of Studies


Evidence for Acute Respiratory and Ear Infections

Research has explored the combination medicine for conditions associated with acute or disruptive episodes, such as Acute Otitis Media (AOM), sinusitis, and lower respiratory infections. Researchers conducted Randomized Controlled Trials (RCTs) and Meta-analyses primarily in pediatric populations for AOM, monitoring outcomes related to physical discomfort, treatment failure, and recurrence frequency. Findings were observed in some studies to be clearest in specific high-risk subgroups of children. For sinusitis, comparative trials examined clinical resolution rates in adult and pediatric patients who were monitored for antibiotic-resistant strains. The evidence regarding the comparison of the combination medicine to observation in milder cases is limited.


Evidence for Protracted Bacterial Bronchitis (PBB)

The combination was observed in specific research contexts for chronic wet cough in children linked to Protracted Bacterial Bronchitis (PBB). Research included placebo-controlled and dose-comparison RCTs where investigators monitored patient-reported outcomes related to cough resolution and recurrence. The evidence contributes to understanding symptom patterns, particularly focusing on initial clinical resolution within the treatment period.


Study Duration and Research Gaps

Research examining this medicine typically focuses on short-term observation intervals, relevant in trials assessing acute symptom patterns (7 to 14 days). Data for long-term effects are not fully established, particularly in understanding outcomes over periods exceeding six months. The evidence base also indicates limited insight regarding specific patient groups, such as older adults or those with co-existing chronic conditions. A primary uncertainty concerns the comparative performance against standard amoxicillin alone across all patient subgroups.

Key Studies & References NIH MedlinePlus Drug Information: Amoxicillin and Clavulanic Acid (Oral)

Frequently Asked Questions (FAQ)

Common questions about Augmentin 457 (FAQ)


Q: What types of bacteria is Augmentin 457 specifically designed to treat?

Official labeling for this medicine specifies that it is indicated for treating infections caused by susceptible isolates of designated bacteria. These designated pathogens include certain Gram-positive and Gram-negative organisms. The determination of whether the medicine targets the specific bacteria causing an infection is made by a healthcare professional.

Q: Is Augmentin 457 effective against infections caused by viruses, like the flu or common cold?

Augmentin is classified as an antibacterial drug. Regulatory guidance emphasizes that it should be used only to treat infections proven or strongly suspected to be caused by bacteria. Antibacterial drugs are generally not effective against infections caused by viruses, such as the common cold or influenza.

Q: What is the typical timeframe for Augmentin 457 to start working in the body?

According to official pharmacokinetic studies, the peak concentrations of both active components (amoxicillin and clavulanate potassium) typically occur in the bloodstream approximately 1.5 hours after an oral dose is administered. This data indicates the initial time the medication is highly concentrated in the body.

Q: What happens if the full course of Augmentin 457 is not completed?

Regulatory documents stress that antibacterial drugs should be used only to treat bacterial infections in order to reduce the development of drug-resistant bacteria. If the full course of treatment is not finished, regulatory documents indicate that the goal of reducing the development of resistant bacteria may be undermined.

Q: Is it possible for the body to develop resistance to Augmentin 457 over time?

Official information explains that this medicine is designed to reduce the development of drug-resistant bacteria. The clavulanate component specifically works to protect the amoxicillin from being broken down by defensive enzymes produced by certain resistant bacteria, allowing the drug to maintain its action.

Q: How long does Augmentin 457 generally stay in the body after the last dose?

Official pharmacokinetic data indicates the approximate half-life for amoxicillin is about 1.3 hours and for clavulanic acid is approximately 1.0 hour after oral administration. The half-life is the time it takes for the concentration of the substance in the body to reduce by half.

Q: What kind of skin rash is typically associated with Augmentin 457?

Official adverse reaction reports include common side effects such as general skin rashes and urticaria, commonly known as hives. Regulatory safety constraints also note rare but serious rashes, such as Stevens-Johnson syndrome (SJS), which are considered severe hypersensitivity reactions.

Q: Can taking Augmentin 457 be linked to feelings of fatigue or tiredness?

While fatigue or tiredness is not listed among the very common or common side effects, adverse reaction reports submitted to regulatory bodies have included a small number of reports of fatigue associated with the medicine.

Q: What is the concern about Augmentin 457 causing an infection with C. difficile bacteria?

Regulatory safety documents include a warning that Clostridioides difficile-associated diarrhea (CDAD) is a serious condition reported with the use of nearly all antibacterial drugs, including Augmentin. If a patient develops diarrhea after taking the medicine, regulatory information indicates that evaluation for this condition may be necessary.

Q: Are there any known differences in side effect profiles between children and adults using Augmentin 457?

Regulatory documents indicate that pediatric-specific problems have not been shown to limit the usefulness of this medicine in children over three months of age. However, official information states that specific dose modifications are necessary for newborns and infants younger than three months due to their incompletely developed kidney functions.

Q: Can Augmentin 457 affect a person's sleep patterns?

Official reports of central nervous system side effects have included some instances of insomnia and anxiety. Insomnia and anxiety have been reported as central nervous system side effects in official safety reports.

Q: Is it possible for a rash from Augmentin 457 to appear days or weeks after starting treatment?

Official safety constraints note that while severe immediate hypersensitivity often occurs early, other serious adverse reactions, such as hepatic dysfunction (liver problems), may be delayed, sometimes appearing several weeks after treatment is completed.

Q: Can the clavulanate component in Augmentin 457 interact with other specific medications?

Regulatory labels detail specific pharmacokinetic interactions where one component is affected differently than the other. For instance, the label notes that the renal excretion of clavulanate is not delayed by the gout agent probenecid, while the excretion of amoxicillin is delayed.

Q: Does the '457' in the name refer to the total amount of active ingredient?

The number '457' references the strength of the amoxicillin (400 mg) and clavulanate potassium (57 mg) components in a specific volume (per 5 mL of suspension). This combination, which totals 457 mg of active ingredients, is a specific high-strength formulation often utilized in pediatric care.

Q: What is the difference between Augmentin 457 suspension and other Augmentin suspension strengths?

Different formulations of this medicine, including the 400 mg/ 57 mg (457) suspension, have different ratios of amoxicillin to clavulanate. Because of these differences in composition, regulatory labels state that some strengths are not directly substitutable for others.

Q: Are all Augmentin formulations interchangeable?

Official regulatory warnings advise against the interchangeability of certain tablet strengths. For example, the label explicitly cautions that two 250 mg/ 125 mg tablets are not substitutable for one 500 mg/ 125 mg tablet due to an increase in the clavulanic acid component.

Q: Is discoloration of the teeth a possible side effect of the liquid form of Augmentin 457?

Official adverse reaction reports have included tooth discoloration (staining that may appear brown, yellow, or gray). This effect is reported mostly in pediatric patients. In most reported cases, the discoloration was observed to be reversible through professional dental cleaning or brushing.

Q: What is the concern about Augmentin 457 potentially affecting laboratory blood tests?

The official drug interaction section includes a caution that abnormal prolongation of prothrombin time (a measure of blood clotting) has been reported in patients receiving this medicine alongside oral anticoagulants. Because of this risk, regulatory information indicates that close monitoring of laboratory blood tests, such as the International Normalized Ratio (INR), may be necessary.

How should Augmentin 457 be stored and disposed of?

Storage and Disposal Requirements

The storage requirements for Augmentin 457 mg/5 mL powder for oral suspension depend strictly on whether the medicine is in its dry powder form or has been mixed with water.

  • Dry Powder Storage: The unmixed powder must be stored in its original container and be protected from moisture, at a temperature not exceeding 25 C or 30 C as per regional labeling.
  • Reconstituted Suspension: The mixed liquid must be refrigerated at 2 C to 8 C and must not be frozen. The liquid suspension must be discarded after 7 or 10 days from the time of mixing, as stated in the official label, and should not be used if the color has changed.

The medicine is supplied in a bottle with a child-resistant cap and must be kept out of the reach and sight of children. Any unused medicine or waste material must be disposed of in accordance with local requirements for pharmaceutical waste.

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

Equivalent of Augmentin 457 found in:

A-Z Index: