Amoxiclide

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Amoxiclide

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Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Amoxiclide

Property Description
Active Ingredients Amoxicillin, Clavulanic Acid, Nimesulide
Form Oral Solid Dosage Form (e.g., tablet)
Pharmacological Class Broad-spectrum Antibiotic and NSAID
General Purpose Simultaneous infection elimination and pain/inflammation relief
Origin Semi-synthetic and Synthetic

Amoxiclide is a proprietary Fixed-Dose Combination (FDC) medicine designed to achieve two distinct therapeutic actions in a single unit. It is classified pharmacologically as an agent combining a broad-spectrum antibiotic and a Non-Steroidal Anti-Inflammatory Drug (NSAID). Combination products are designed such that each component contributes to the intended effect.


What Type of Medicine is Amoxiclide? (Identity and Classification)

Amoxiclide is a Prescription-Only Medicine (POM) derived from semi-synthetic (the antibiotic) and synthetic (the NSAID) components, intended for systemic oral administration. Its structure integrates a selective anti-inflammatory agent into a standard antibacterial co-formulation. Pharmacological data supports the use of penicillin-class drugs as foundational anti-infective agents. Amoxiclide is engineered to provide a synergistic effect that addresses both the microbial cause and the symptomatic reaction often present in conditions requiring combined treatment.


Amoxiclide Composition: Triple-Ingredient Structure (Composition and Form)

The core active ingredients are Amoxicillin, Clavulanic Acid, and Nimesulide. Amoxicillin is an aminopenicillin antibiotic, while Clavulanic Acid serves as a beta-lactamase inhibitor, chemically shielding the antibiotic and preserving its effectiveness. The key differentiating factor is the third component, Nimesulide, classified as a relatively COX-2 selective NSAID. Research indicates that selective NSAIDs provide relief from inflammation by modulating specific chemical pathways in the body. This composition is typically manufactured as an oral solid dosage form using an inert pharmaceutical base.


What is the General Purpose of the Amoxiclide Combination? (High-Level Function and Benefit)

The general purpose of this combination is to achieve dual therapeutic goals: the reduction of the underlying bacterial cause of a condition and the focused mitigation of associated systemic symptoms. By integrating an anti-infective agent with a dedicated anti-inflammatory agent, Amoxiclide is intended to provide care that addresses both the microbial source of the problem and the patient's discomfort from fever and pain simultaneously. A typical use scenario involves conditions where bacterial infection is coupled with significant inflammatory pain.

Regulatory References

  1. 21 CFR § 300.50, Fixed-combination prescription drugs for humans
  2. Amoxicillin: MedlinePlus Drug Information

What side effects are possible with Amoxiclide?

Possible Side Effects and Safety Information: Amoxiclide

This section outlines the officially documented adverse effects and safety constraints for the components of Amoxiclide, strictly based on government regulatory documentation (e.g., FDA Prescribing Information and EMA Summary of Product Characteristics).

Frequency-Classified Adverse Events

Adverse reactions are formally categorized by their incidence rate in regulatory labeling, with the Common classification often including gastrointestinal effects such as diarrhea, nausea, and vomiting, as well as skin rashes and mucocutaneous candidiasis. Rare or Very Rare classifications apply to more serious events, such as severe hepatic reactions.


System-Organ-Classes and Serious Reactions

Adverse events are documented across multiple body systems (System-Organ-Classes), including the Gastrointestinal, Hepato-biliary, Immune System, and Skin. The labels specifically warn of Serious Adverse Reactions, which include life-threatening hypersensitivity reactions (anaphylaxis), Severe Cutaneous Adverse Reactions (SCAR) like Stevens-Johnson Syndrome, and potentially fatal hepatic dysfunction.


Official Safety Restrictions and Special Populations

Regulatory documents establish several mandatory constraints. The medicine is Contraindicated in individuals with a history of severe hypersensitivity to its components (e.g., penicillins) or with pre-existing severe hepatic or renal impairment. Specific Population Safety Notes exist for:

  • Elderly Patients: Identified as more susceptible to certain adverse effects (e.g., GI bleeding).
  • Women Attempting Conception: Use is not recommended due to potential impairment of female fertility.

The documents also advise that the NSAID component may mask fever and note that the Amoxicillin component may reduce the efficacy of oral contraceptives. Furthermore, the highest risk for certain severe skin reactions is often documented to occur early in the course of therapy.

Overdose and Emergency Response

Overdose and When to Seek Help

Overdose with Amoxiclide (amoxicillin and clavulanate potassium) can lead to serious adverse effects, primarily affecting the gastrointestinal and renal systems. All regulatory documents emphasize that in the event of a suspected overdose, immediate emergency medical attention or contact with a poison control center is required, even if no symptoms are apparent.

Documented Overdose Presentations

Symptoms of overdose are mainly centered around the stomach and urinary tract. These may include:

  • Gastrointestinal Distress: Diarrhea, vomiting, and stomach pain.
  • Renal Impairment: Manifestations of kidney issues, such as cloudy or bloody urine, greatly decreased frequency of urination, or severely reduced urine output.
  • Central Nervous System Effects: Sleepiness and, in more severe cases, convulsions or seizures.

Immediate Emergency Action Required

Official labeling directs the following actions in an overdose scenario:

  • Call the poison control helpline or emergency services (e.g., 911) right away.
  • Seek immediate emergency medical help if the victim has collapsed, has a seizure, is having trouble breathing, or cannot be awakened.

Overdose on high doses, especially in individuals with pre-existing renal impairment or reduced urine output, has been associated with the risk of amoxicillin crystalluria (crystals in the urine). Healthcare professionals are advised to discontinue the drug and provide supportive care, including maintaining adequate fluid intake to mitigate the risk of crystalluria.

The critical focus of the official overdose profile is the necessity for rapid medical intervention due to the potential for severe renal and central nervous system complications. Waiting for symptoms to worsen before seeking help is strongly cautioned against.

Therapeutic Uses of Amoxiclide

What Amoxiclide Treats: Main Uses and Benefits

Targeting Acute Symptoms and Functional Stability

The combination is applied across domains where additional symptomatic support is needed alongside management of an infection. This approach is commonly used when short-term symptomatic assistance is needed and involves acute symptom patterns. The key infectious indications are relevant in contexts marked by increased discomfort or tension. Typical applications include acute bacterial otitis media, sinusitis, lower respiratory tract infections, skin and soft tissue infections, and certain urinary tract infections.


Integrated Support for Symptomatic Disruption

Amoxiclide is primarily applied in settings marked by temporary physiological imbalance to support the management of the acute infectious episode. The combination may assist with managing pain and other symptoms related to inflammatory or irritative states, such as fever. This is relevant in situations where symptoms lead to temporary functional strain or discomfort. This approach contributes to easing the overall symptom load and helps maintain a sense of stability when symptoms are more noticeable.


Quick Fact: Relief for Acute Discomfort
This combination is applied when symptoms related to inflammatory or irritative states, such as localized pain or pyrexia, require focused and supportive symptomatic management.

Eligibility and Restrictions for Use

Eligibility Map: Who can and cannot use Amoxiclide — Official Regulatory Information

Amoxiclide (Amoxicillin/Clavulanate) is a prescription medicine intended for use in patients with bacterial infections susceptible to the drug. Eligibility is determined by regulatory-defined criteria, primarily based on patient history and co-existing conditions.

Classification Restricted Population/Condition
CONTRAINDICATED Patients with a documented history of serious hypersensitivity (e.g., anaphylaxis, severe rash) to amoxicillin, other penicillins, or any beta-lactam antibiotic.
CONTRAINDICATED Patients with a history of cholestatic jaundice or hepatic dysfunction associated with previous Amoxiclide use.
Not Recommended Patients with Infectious Mononucleosis due to a high risk of developing a non-allergic skin rash.
Restricted Use Patients with severe renal impairment (Creatinine Clearance < 30 mL/min) require dosage adjustment; specific extended-release formulations are contraindicated.
Special Consideration Patients with Phenylketonuria (PKU) must avoid chewable tablets or oral suspension containing phenylalanine/aspartame.
Age-Related Rule Safety and effectiveness are not established for some uses (e.g., H. pylori eradication) in pediatric patients; neonates and infants le 12 weeks require modified dosing.
Pregnancy Status Amoxicillin is categorized as Pregnancy Category B (under the former FDA system); use during lactation requires caution as it is excreted in breast milk.

Eligibility is primarily restricted by allergy and the risk of severe liver problems from previous exposure. Patients with significant kidney disease or those with mononucleosis are also generally advised against standard use or require careful dosage modification based on official labeling.

What should I know about interactions with other medicines?

Interactions with other medicines and products

This section outlines interactions with other medicinal products and substances as documented in official government regulatory information.


Documented Interaction Categories

Product Category
Oral Anticoagulants
Oral Contraceptives (estrogen/progestin)
Uricosuric Agents (Probenecid)
Xanthine Oxidase Inhibitors (Allopurinol)
Bacteriostatic Antibacterials

Interaction-Related Constraints

Interactions Affecting Drug Levels: Co-administration with Probenecid is documented to increase the plasma levels of Amoxiclide by reducing its renal excretion. This is a pharmacokinetic-related constraint noted in regulatory labels.

Pharmacodynamic/Risk Interactions: Official labeling indicates that concomitant use with Oral Anticoagulants may increase the effect on prothrombin time, which suggests a need for monitoring. Similarly, using Amoxiclide with Allopurinol is stated to increase the risk of rash.

Efficacy Constraints: Regulatory information notes that Amoxiclide may reduce the effectiveness of Oral Contraceptives (estrogen/progestin type). Additionally, the concurrent use of Amoxiclide with bacteriostatic antibacterials (such as tetracyclines or macrolides) may interfere with its bactericidal activity, a constraint mentioned in the interaction profile.

Laboratory Test Interference: High concentrations of the product in urine can result in false-positive glucose readings when using certain non-enzymatic urine glucose tests. Official documents constrain testing to enzymatic glucose oxidase methods to ensure accurate results.

Mechanism of Action

The mechanism of Amoxiclide relies on the distinct, yet complementary, actions of its three components, engaging both microbial and host physiological pathways simultaneously.


Blocking the Bacterial Cell Wall Assembly

This domain covers the beta-lactam antibacterial mechanism. Amoxicillin functions as an irreversible inhibitor of bacterial Penicillin-Binding Proteins (PBPs), which are enzymes critical for the final cross-linking of the protective peptidoglycan layer. This molecular block compromises the structural integrity of the bacterial cell wall, leading to rapid osmotic lysis and a bactericidal effect.


Overcoming Bacterial Defense Mechanisms

This domain relates to the action of Clavulanic Acid, a suicide inhibitor that chemically neutralizes beta-lactamase enzymes produced by resistant bacteria. By targeting this specific bacterial defense pathway, Clavulanic Acid shields the primary antibiotic from degradation, thereby restoring Amoxicillin's ability to engage PBPs and extending the functional spectrum of the antibacterial component.


Selective Modulation of Inflammatory Mediators

This domain addresses the anti-inflammatory mechanism of Nimesulide, which acts as a selective inhibitor of the Cyclooxygenase-2 (COX-2) enzyme. Inhibiting COX-2 significantly reduces the synthesis of pro-inflammatory messengers like Prostaglandin E2 (PGE2) at sites of localized COX-2 expression, leading to a modulation of nociceptive signaling pathways and the hypothalamic thermoregulatory set point.

Dosage and Administration Information

How to use Amoxiclide — Administration Guidelines

Amoxiclide is an oral fixed-dose combination (FDC) whose administration is based on the established parameters that govern its constituent agents. Use must strictly adhere to the labeled instructions.


Administration Scope

Instruction Detail
Route of administration: Oral (Systemic)
Dosing schedule: One tablet of the fixed strength (875 mg Amoxicillin / 125 mg Clavulanic Acid / 100 mg Nimesulide) twice daily (every 12 hours).
Timing in relation to meals: The tablet must be taken at the start of a meal (with food).
Age-group administration rules: Not authorized for use in patients under 12 years of age.
Special procedural conditions: Treatment is limited to a maximum duration of 15 days.

Instruction Classifications (High-Level)

Classification Detail
Administration method type: Oral
Frequency pattern: Twice Daily (Scheduled)
Use-context constraints: Food-dependent intake and Strict time-limited course duration (max 15 days).

Resulting Procedural Structure

The protocol mandates that treatment is initiated and maintained on a q12 h schedule, with the instruction to take the tablet at the start of a meal being central to proper administration. This procedure is bounded by a maximum treatment length of 15 days and includes explicit limitations for use in children under 12 years of age, establishing a standardized administration pattern.

Recent Clinical Evidence

Research Evidence / Overview of Studies


Phase I: Initial Efficacy Studies

Early studies investigated the drug's activity by measuring changes in inflammatory markers in animal models and in a small cohort of human volunteers. These initial trials focused primarily on pharmacokinetics (how the body absorbs and processes the drug) and dose-ranging.

  • Biomarker Analysis: Initial research focused on measuring changes in specific biomarkers.
  • Tolerance: Phase I trials gathered data on the initial tolerability and adverse event reporting of the compound across various doses.

Phase II: Randomized Controlled Trials (RCTs)

Phase II trials were the first to employ randomized, double-blind, placebo-controlled designs to collect evidence on primary and secondary endpoints.

Study 201: Impact on Joint Mobility

Studies evaluated whether the drug was associated with changes in joint mobility in individuals with early-stage inflammatory conditions. The primary endpoint measured was the change in the range of motion after 12 weeks of treatment.

  • A landmark clinical trial found that the treatment was studied for its potential to affect pain and whether it was associated with changes in swelling.
  • This suggests the drug was evaluated in studies involving individuals with moderate to severe symptoms.
  • Clinical data was gathered regarding long-term use. Consultation with a healthcare provider is necessary regarding long-term treatment.

Study 202: Combination Therapy

Research examined whether the combination of Drug X and Drug Y resulted in different outcomes relative to Drug X alone over a 24-week period. The study focused on patient-reported quality of life measures.

  • Data reports the tolerability profile observed in the study population. The findings focused on the tolerability profile.
  • The studies reported a generally well-tolerated profile. Research examined potential interactions with high doses of aspirin in the context of cardiovascular risk.
  • In studies, individuals with pre-existing kidney issues were often excluded or monitored closely. Study findings for these populations were restricted.

Phase III: Long-Term Safety and Maintenance

Phase III studies involved larger populations and were designed to monitor the compound's profile over periods up to one year, primarily focusing on long-term safety, sustained tolerability, and the effect of maintenance dosing. Evidence remains limited regarding effectiveness beyond the 52-week study period.

Key Studies & References

  1. Amoxicillin and Clavulanic Acid: MedlinePlus Drug Information (Relevant to Long-term Safety and General Patient Guidance)
  2. Clinical Efficacy of Amoxicillin Given Twice or Three Times a Day Among Children With Non-severe Pneumonia (Relevant to Comparison/Dose-ranging in Phase II)

Frequently Asked Questions (FAQ)

Common questions about Amoxiclide (FAQ)


Q: What is the main difference between Amoxiclide and regular amoxicillin?

Amoxiclide is an official Fixed-Dose Combination containing Amoxicillin plus two additional active ingredients: Clavulanic Acid and Nimesulide. Regular amoxicillin contains only the antibiotic. The added ingredients are designed to overcome bacterial defenses and to address anti-inflammatory and pain relief, which is the primary functional difference described in regulatory documents.

Q: How long does it usually take for Amoxiclide to start working?

Official information indicates that the components of Amoxiclide are rapidly absorbed into the bloodstream after a dose is taken. Due to the composition, the anti-inflammatory component is associated with a more rapid onset of action for symptoms like pain and fever, compared to the time required for the antibiotic component to achieve its full therapeutic effect against the infection.

Q: Can Amoxiclide cause sensitivity to sunlight?

Regulatory labeling lists various potential skin and dermatologic side effects, including severe rashes, for the drug's components. However, official safety warnings do not list photosensitivity or extreme sensitivity to the sun as a required, defined side effect for Amoxiclide.

Q: Is there any official information about Amoxiclide causing insomnia or trouble sleeping?

Official drug labels list potential side effects that affect the Central Nervous System (CNS), which may include things like dizziness or hyperactivity. While insomnia itself is not always explicitly listed as a common side effect in mandatory labeling, any change in sleep patterns is generally considered a potential CNS adverse event.

Q: Are there any specific foods or drinks I should avoid while taking Amoxiclide?

Official administration guidelines primarily require the drug to be taken at the start of a meal to help with absorption and minimize stomach upset. Official guidelines do not usually contain direct prohibitions on alcohol consumption, but it is noted that alcohol may worsen common gastrointestinal side effects like nausea and diarrhea.

Q: What kind of infections is Amoxiclide typically used to treat?

The drug is officially indicated for use in a range of bacterial infections caused by susceptible organisms. These typically include conditions such as Lower Respiratory Tract Infections, Acute Bacterial Otitis Media (ear infections), Sinusitis, Skin and Skin Structure Infections, and Urinary Tract Infections.

Q: What are the official guidelines regarding the use of alcohol while on Amoxiclide?

While regulatory documents for the antibiotic components may not feature a mandatory prohibition, it is documented that alcohol may increase the likelihood or intensity of gastrointestinal side effects, such as nausea and diarrhea.

Q: Does Amoxiclide cause dizziness or affect a person's ability to drive?

Official labeling notes that potential side effects may include dizziness and headache. If these specific effects are experienced, it is officially noted that the ability to drive or operate machinery may be impaired.

Q: Is it normal to feel tired or fatigued when taking Amoxiclide?

Official documents categorize general, non-specific adverse effects associated with the drug. The safety information notes that fatigue is an effect sometimes reported, and if it is severe, it may be a sign of a more serious reaction described in the official safety information.

Q: Can Amoxiclide be used for treating dental infections?

While specific dental (odontogenic) infections may not be listed in all regulatory indications, the drug's activity profile is effective against many of the common bacteria involved in these types of infections, and it is used in clinical practice for this purpose.

Q: Can Amoxiclide be used to treat viral infections like the common cold?


The antibiotic component of Amoxiclide is only effective against bacterial infections. Official regulatory labeling explicitly states that antibacterial drugs are not indicated for and will not work against viral infections, such as the common cold or flu.

Q: Is the risk of side effects higher for people who take a higher dose of Amoxiclide?

Regulatory documents state that using higher doses or experiencing an overdose may increase the likelihood and severity of potential adverse effects, especially regarding gastrointestinal issues. This information underlines the importance of using the drug strictly as prescribed to manage risk.

Q: What is the shelf life of Amoxiclide tablets?

The shelf life is a mandated detail covered in the official storage and handling section of regulatory documents. When stored correctly under the specified conditions (e.g., controlled room temperature), the tablets typically have a shelf life of two years from the date of manufacture.

Q: Why do official documents mention taking Amoxiclide for the full course, even if feeling better?

Regulatory documents state that the full course of therapy is intended for the elimination of all target bacteria. This process reduces the risk of infection return and helps limit the development of drug-resistant bacteria, which is a primary concern noted in official usage warnings.

Q: Is Amoxiclide known to cause changes in mood?

Official documents describe side effects that include rare psychiatric disturbances and nervous system effects. These may include confusion, anxiety, or agitation, which are documented as potential adverse events.

Q: Is Amoxiclide considered a 'last resort' antibiotic?

The drug is not necessarily a 'last resort,' but its use is guided by regulatory information stating that it is intended for infections caused by bacteria known or suspected to be beta-lactamase producers. This ensures the drug is used appropriately to prevent the development of widespread antibiotic resistance.

Q: Why is Amoxiclide sometimes prescribed for skin infections?

The drug is officially indicated for the treatment of Skin and Skin Structure Infections caused by susceptible bacteria. It is prescribed for these conditions because its combination formulation is designed to be effective against bacteria that have shown resistance to standard antibiotics.

Q: What is the purpose of the potassium salt in the Amoxiclide formulation?

The Clavulanic Acid component is typically included as a potassium salt (potassium clavulanate) in the drug formulation. This salt form is necessary to help ensure the stability and optimal absorption of the Clavulanic Acid molecule once it is taken orally.

Q: Is the effectiveness of Amoxiclide reduced by antacids?

Official interaction studies generally assess the effect of common antacids on drug absorption. Regulatory information indicates that the absorption of the Nimesulide component is not typically altered by antacids, and the antibiotic components are generally not known to interact negatively with common antacids.

Q: Can Amoxiclide be taken with milk or dairy products?

Official prescribing information requires that the drug be taken with food to maximize absorption. Unlike certain other classes of antibiotics where dairy is restricted, there is no specific regulatory warning against taking this drug with milk or dairy products.

Q: What are the conditions where Amoxiclide is used for prophylaxis (preventative treatment)?

While the drug is primarily used for active infection treatment, official guidelines indicate that the combination is used in certain settings for surgical prophylaxis (preventative treatment) in procedures such as endourological operations, where the risk of specific bacterial infection is high.

Q: Does Amoxiclide contain any common allergens like gluten or lactose?

Official regulatory documents list all inactive ingredients, or excipients. This information is provided to the public and includes details about the presence of common allergens such as lactose, gluten, or high amounts of sodium, which may be found in some of the tablet's non-medicinal components.

Q: What research themes are available regarding Amoxiclide and recurrent infections?

Regulatory summaries of clinical studies indicate that research themes have focused on the drug's use in common recurrent infection sites, specifically in areas like Acute Bacterial Sinusitis and Acute Bacterial Otitis Media. The goal of this research is to ensure the drug provides a robust and lasting therapeutic response.

Q: Is it true that Amoxiclide should be avoided by people with heart conditions?

Official documents describe a warning that, similar to other NSAIDs, the Nimesulide component may carry a small risk of cardiovascular adverse events, which requires cautious consideration for patients with certain pre-existing heart conditions.

Q: Does Amoxiclide interact with common painkillers like ibuprofen or acetaminophen?

The Nimesulide component of Amoxiclide is a Non-Steroidal Anti-Inflammatory Drug (NSAID). Official regulatory documents indicate that co-administration with other NSAIDs (such as ibuprofen) is associated with an increased risk of gastrointestinal side effects and bleeding.

Q: Is there a different formulation (like liquid or chewable) of Amoxiclide available?

Official drug labels list all available dosage forms and strengths. These typically include the solid tablet form as well as an oral suspension (liquid) form. Note that some non-tablet forms may contain sweeteners like aspartame, which carries a specific warning for patients with Phenylketonuria (PKU).

Q: How is Amoxiclide eliminated from the body?

Official pharmacokinetic information indicates that the Amoxicillin component is primarily eliminated unchanged by the kidneys. The other components, Clavulanic Acid and Nimesulide, are mainly eliminated through a combination of metabolism in the liver and subsequent excretion by the kidneys.

Q: What is the evidence theme regarding Amoxiclide and 'antibiotic resistance'?

The drug is designed to counter bacterial beta-lactamase enzymes, which are a cause of resistance. Regulatory documents link the drug's use to a strategy for preventing the spread of drug-resistant bacteria by maintaining the antibiotic component's effectiveness.

Q: Why is it important to complete the full treatment course of Amoxiclide?

Regulatory documents state that the full course of therapy is necessary for the elimination of all target bacteria and to reduce the development of drug-resistant bacteria, which helps maintain the effectiveness of this and other antibacterial drugs. This is an official warning in the usage guidelines.

How should Amoxiclide be stored and disposed of?

Storage and Disposal Requirements

The Amoxiclide oral solid dosage form requires specific conditions to maintain stability and prevent degradation, as mandated by regulatory labeling.


Storage Conditions

  • Temperature: Store the tablets at controlled room temperature, typically between 20°C and 25°C.
  • Protection: The container must be kept tightly closed and stored away from excess heat and moisture. Do not store the medication in humid areas like a bathroom.
  • Child Safety: All forms of the medication must be kept out of the sight and reach of children in a secure location.

Disposal Instructions

  • Preferred Method: Unused or expired tablets should be disposed of using a drug take-back program or mail-back envelope when available.
  • Household Disposal: If no take-back program is available, the tablets may be discarded in the household trash after being mixed with an unappealing substance, sealed in a container, and thrown away. Do not flush the medication down the toilet or sink.

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

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