Clavodar

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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 Clavodar

What is Clavodar? (Amoxicillin and Clavulanic Acid)

Property Description
Active Ingredients Amoxicillin and Clavulanic Acid
Form Film-coated tablets, Oral suspension
Pharmacological Class beta-Lactam/beta-Lactamase Inhibitor Combination
General Purpose To combat bacterial infections and resistance
Origin Semisynthetic (Amoxicillin) and Bacterial-derived (Clavulanic Acid)

What Type of Medicine is Clavodar?

Clavodar is a prescription-only combination drug classified broadly as an antibiotic. Its precise pharmacological classification is a penicillin-class antibacterial and beta-lactamase inhibitor combination, a specialized type of agent. This dual classification is clinically recognized for its ability to address the increasing prevalence of bacterial resistance that compromises standard single-agent therapy.

The formulation uses the active ingredients Amoxicillin and Clavulanic Acid. Amoxicillin is a semisynthetic penicillin analog, while Clavulanic Acid is derived from the microorganism Streptomyces clavuligerus. The integration of these two distinct components is necessary to create an antibacterial agent with an expanded spectrum of activity.

Composition: The Amoxicillin and Clavulanic Acid Combination

The medicine contains the two essential active ingredients: Amoxicillin (as Amoxicillin trihydrate) and Clavulanic Acid (as Potassium clavulanate). These substances are designed for the oral route of administration and are manufactured as film-coated tablets and various powder for oral suspension presentations.

Amoxicillin performs the direct bactericidal action by interfering with the structural integrity of the bacterial cell wall. Clavulanic Acid acts as the crucial beta-lactamase inhibitor, preventing the premature deactivation of Amoxicillin by bacterial enzymes. This mechanism is intended to address specific microbial defense mechanisms.

General Purpose and Broad-Spectrum Utility

The general purpose of Clavodar is to act as a broad-spectrum antibiotic to resolve a wide array of bacterial infections. The unique combination is specifically intended to overcome the issue of bacterial resistance that is often associated with single-agent use.

By protecting the antibiotic from degradation, the medicine is effective against beta-lactamase-producing isolates, thereby achieving the necessary elimination of the bacterial pathogens causing the infection.

Regulatory References

  1. U.S. National Library of Medicine
  2. MedlinePlus Information

What side effects are possible with Clavodar?

Possible Side Effects and Safety Information

Clavodar (amoxicillin and clavulanate potassium) is associated with adverse reactions primarily affecting the gastrointestinal system. The most frequently reported effect is diarrhea (Very Common in adults), along with common reactions such as nausea, vomiting, and mucocutaneous candidiasis. Taking the medicine at the start of a meal may help reduce gastrointestinal intolerance.


Serious and Clinically Significant Risks

  • Hypersensitivity: Serious and occasionally fatal reactions, including anaphylaxis and severe cutaneous adverse reactions (SCARs) such as Stevens-Johnson Syndrome (SJS) and Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS), have been reported. Therapy must be discontinued immediately if an allergic reaction occurs.
  • Hepatic Dysfunction: The drug can cause cholestatic jaundice and hepatitis, which may be severe and, in rare instances, fatal. Hepatic events are reported predominantly in elderly patients and males. Signs and symptoms can occur during or several weeks after treatment ceases.
  • Clostridioides difficile-Associated Diarrhea (CDAD): This condition can range from mild diarrhea to life-threatening colitis and must be considered in patients presenting with diarrhea during or after therapy.

Restrictions and Safety Considerations

Clavodar is contraindicated in patients with a history of serious hypersensitivity to any penicillin or a prior history of cholestatic jaundice or hepatic dysfunction linked to its use.

Caution and dose adjustment are required for patients with renal impairment, as high doses or pre-existing kidney dysfunction may lead to convulsions. The use of this drug is generally avoided in patients with infectious mononucleosis due to a high risk of developing a generalized skin rash. Liver function should be monitored in patients with hepatic impairment.

Overdose and Emergency Response

Overdose and when to seek help

Official regulatory documents define the overdose profile of Clavodar (Amoxicillin and Clavulanic Acid) by describing documented manifestations and necessary emergency response actions.

Overdosage is primarily associated with gastrointestinal symptoms including stomach pain, vomiting, and diarrhea. Central Nervous System (CNS) effects such as drowsiness and hyperactivity are also documented. The profile emphasizes the critical potential for renal damage, highlighted by the risk of crystalluria and the more severe outcome of oliguric renal failure resulting from interstitial nephritis following amoxicillin overdosage.

Severe Regulatory Concern Associated Overdose Risk
Renal Impairment Risk of convulsions and higher drug blood levels.
High Doses Increased risk of convulsions and amoxicillin crystalluria.

In the event of suspected overdosage, the product should be discontinued. Management is symptomatic, and both drug components are removable from circulation by haemodialysis. Emergency medical attention is required for severe manifestations such as seizures, respiratory distress, or if the individual has collapsed or cannot be awakened, as stated in government guidelines.

Therapeutic Uses of Clavodar

What Clavodar Treats: Main Uses and Benefits

Clavodar is primarily used in clinical settings marked by heightened symptomatic distress due to bacterial infection, in situations where patients experience organisms resistant to standard treatments. It may be part of symptomatic management that helps ease the overall symptom burden.

This medicine is generally used to help with acute infections of the lungs, sinuses, middle ear, skin and soft tissue (like cellulitis), and the urinary tract. It is applied across domains where additional symptomatic support is needed to address pronounced symptoms related to systemic imbalance (like fever) and organ-specific functional stress (like persistent cough or difficulty breathing).


The clinical context for its use often involves scenarios where symptoms may intensify temporarily, such as with dental abscesses or certain infected bite wounds, where resistant bacteria may be present.

“This combination is considered relevant in conditions presenting with localized discomfort and inflammatory or irritative states.”

The medicine contributes to easing the overall symptom load and assists with maintaining functional stability, supports patients during episodes of heightened discomfort.

Quick Fact: Supports the easing of symptoms related to Localized Pain and Systemic Fever

Eligibility and Restrictions for Use

Who Can and Cannot Use Clavodar? (Amoxicillin and Clavulanic Acid)

Official regulatory labeling defines specific populations who are eligible for Clavodar and others for whom use is strictly prohibited or restricted.

Absolute Non-Eligibility (Contraindications)

Clavodar is contraindicated and must not be used in patients with a history of hypersensitivity to penicillin or any other beta-lactam antibiotic (such as cephalosporins). It is also contraindicated for patients who have previously developed jaundice or other hepatic dysfunction specifically linked to this medicine.

Restricted and Conditional Use

The medicine is not recommended for patients with conditions like infectious mononucleosis or lymphatic leukemia. Eligibility is conditional on the status of certain organ functions: patients with severe renal impairment (CrCl < 30 ml/min) require specific dose restrictions. Individuals with hepatic impairment should use the medicine only with caution.

Age and Physiological Limits

Use is generally approved for adults and children exceeding defined body weight thresholds. For pregnant women, the medicine is not recommended in the first trimester, and use thereafter is restricted to essential circumstances. Use is permitted during lactation, but caution is advised.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Clavodar (Amoxicillin and Clavulanic Acid) is associated with officially documented pharmacokinetic and pharmacodynamic interactions. This information is based solely on regulatory prescribing documents and national medicine authorities.


Pharmacokinetic Interactions

Co-administration with Probenecid (a uricosuric agent) is not recommended, as it causes a significant increase and prolongation of serum concentration of Amoxicillin. This outcome is due to inhibition of Amoxicillin renal tubular secretion. Methotrexate, an antimetabolite, may also experience elevated serum concentrations due to similar competition for renal tubular pathways.


Pharmacodynamic Interactions and Restrictions

Co-administration with Oral Anticoagulants (such as Warfarin, Phenprocoumon, and Acenocoumarol) carries a documented risk of potentiating the anticoagulant effect, potentially leading to an increased risk of bleeding. Additionally, the combination with Allopurinol is officially associated with an increased incidence of rash.

Combined Oral Contraceptives may have their efficacy reduced when co-administered with this medicine. Regulatory information notes that Clavodar absorption is optimised when taken at the start of a meal. Specific cautions related to accumulation leading to convulsions are noted for patients with renal impairment, and monitoring is advised for those with hepatic impairment.

Mechanism of Action

The mechanism of Amoxicillin and Clavulanic Acid is defined by a two-pronged, synergistic action focused on neutralizing bacterial defenses and acting upon the structure of the pathogen.

️ Bactericidal Inhibition of Cell Wall Synthesis

The primary action involves Amoxicillin directly inhibiting bacterial enzymes called Penicillin-Binding Proteins (PBPs). These proteins are essential for cross-linking the peptidoglycan chains that form the rigid bacterial cell wall. By irreversibly blocking this final construction step, Amoxicillin compromises the structural integrity of the bacterial cell. This mechanistic cascade leads to osmotic instability and subsequent cell lysis, culminating in cell death.

️ Protection Against Enzymatic Resistance

The function of Clavulanic Acid is to prevent the inactivation of Amoxicillin by bacterial resistance mechanisms. Clavulanic Acid acts as a suicide inhibitor by binding irreversibly to bacterial beta-Lactamase enzymes, which would otherwise hydrolyze and deactivate Amoxicillin. By neutralizing this enzymatic defense mechanism, Clavulanic Acid ensures that Amoxicillin remains intact and available to execute its primary bactericidal action against its PBP targets. This synergistic protection ensures Amoxicillin can successfully execute its bactericidal mechanism against susceptible beta-Lactamase-producing strains.

Dosage and Administration Information

How Clavodar is Used: Official Administration Guidelines

The usage of Clavodar (Amoxicillin and Clavulanic Acid) is defined by specific procedural instructions established to ensure proper delivery of the medicine. The standard administration route for most forms is oral use, which includes film-coated tablets, chewable tablets, and powder for oral suspension.

Dosing and Frequency Patterns

Dosing regimens are based on the amoxicillin component and vary depending on the severity of the infection and the specific formulation ratio. Adults (over 40 kg) may be prescribed either an every 12-hour schedule (e.g., 875 mg/125 mg) or an every 8-hour schedule (e.g., 500 mg/125 mg). The treatment is administered as a short-term course and should generally not be extended beyond 14 days without clinical review.

Administration Conditions and Handling

The medicine should be taken at the start of a meal. This timing is a key administration principle intended to minimize potential gastrointestinal discomfort and maximize the absorption of the clavulanic acid component.

Different formulations require specific handling:

  • Oral Suspension must be reconstituted with water and shaken before each use.
  • Extended-Release Tablets must be swallowed whole and cannot be crushed, broken, or chewed.

Population-Specific Use

Official labeling mandates dose modification for patients with impaired renal function. For adults with significant kidney impairment (Creatinine Clearance <30 mL/min), the 875 mg/125 mg and the extended-release formulations are not recommended. Dosing for pediatric patients (under 40 kg) follows weight-based calculations (mg/kg/day).

Administration Constraint Official Requirement
Timing with Food Must be taken at the start of a meal
Course Duration Max. 14 days without re-evaluation
Renal Impairment Dose adjustment or formulation restriction required

Recent Clinical Evidence

Research evidence / Overview of studies for Clavodar

Evidence for Acute Respiratory and Ear Infections

Research examining this medicine in ear and sinus infections primarily consists of short-term Randomized Controlled Trials (RCTs) and various controlled studies. These studies were designed to monitor the condition in a controlled setting and included children (infants 12 weeks and older) and adults. Research examined outcomes related to physical discomfort and systemic or functional imbalance, such as fever. Studies reported measurements of predefined clinical status measurement at the designated follow-up points. Trials explored bacteriological response patterns, particularly focusing on those isolates known to produce defensive enzymes.

What remains uncertain is the full picture of long-term outcomes, as the follow-up durations were limited to the short-term. Comparative evidence is lacking for direct research against all potential alternative antibiotics across both sinusitis and otitis media. Data for certain specialized groups remain insufficient, and research describes that complexity exists when using different drug ratios in these specific infections.


Evidence for Lower Respiratory Tract Infections (LRTI)

Here we will outline the structure of the evidence, including Randomized Controlled Trials (RCTs) that explored this medicine in conditions like Community-Acquired Pneumonia (CAP) and acute exacerbations of chronic bronchitis. Studies were applied in research contexts involving fluctuating or unstable symptoms. Outcomes monitored included those related to physiological strain or stress and functional measures. Studies reported measurements of clinical status and bacteriological response. Studies also included specialized research to monitor the drug concentrations achieved in the body relative to the concentration required to inhibit bacterial growth.

Evidence is limited regarding whether long-term effects are fully established, as the focus was on the acute phase of illness. Data for certain complex patient groups with significant comorbidities are still emerging, and subgroup findings are uncertain when applying results across all specific LRTI indications.


Evidence in Special Populations and Patient Groups

Research was evaluated in pediatric patients for indications like acute otitis media, including children 12 weeks and older. Studies also explored outcomes for older adults in certain trials, such as those for Community-Acquired Pneumonia. For patients with impaired renal function, data show patterns related to how the drug is processed by the body. However, data for certain groups remain insufficient and findings describe group patterns, not personal outcomes.

Frequently Asked Questions (FAQ)

Common questions about Clavodar (FAQ)

Q: Why is Clavodar only available by prescription?

A: Clavodar is classified as a prescription-only medicine. Regulatory documents establish this requirement to ensure that its use is restricted to treating specific bacterial infections and is medically supervised to address the risks of serious side effects and resistance.

Q: Is Clavodar safe for use in older adults (seniors)?

A: Official information indicates that use is generally approved for older adults. However, regulatory documents state that this age group may require additional monitoring. Adjustments to the dose may be necessary if a patient has reduced kidney function, and monitoring liver function is also often advised.

Q: What should I do if I think I'm having a side effect from Clavodar?

A: If you experience any adverse reaction, official guidance advises contacting a healthcare professional immediately. For signs of a severe allergic reaction or serious liver issues, official guidance strongly advises contacting a healthcare professional immediately.

Q: Do food restrictions apply while taking Clavodar?

A: Regulatory information indicates that the medicine should be taken at the start of a meal to help maximize absorption and minimize potential gastrointestinal side effects. No specific food groups are formally restricted in the official prescribing documents beyond this mandatory timing.

Q: Is Clavodar effective for all types of [Disease Category Clavodar Treats]?

A: Official labeling clarifies that Clavodar is intended to address infections caused by specific bacteria known to be susceptible to the combination of amoxicillin and clavulanic acid. It is specifically formulated to be active against strains that produce beta-lactamase enzymes. Its effectiveness is limited to treating these susceptible pathogens.

Q: Is Clavodar considered a pain reliever?

A: According to official regulatory sources, Clavodar is classified as a penicillin-class antibacterial and beta-lactamase inhibitor combination. It is not classified as a pain reliever or analgesic.

Q: What if I miss a dose of Clavodar? Is there a specific protocol?

A: Official patient information generally advises to take the missed dose as soon as it is remembered. However, if it is almost time for the next scheduled dose, the missed dose is generally skipped according to the recommended protocol.

Q: Can Clavodar cause changes in mood or sleep?

A: Regulatory documents list occasional adverse reactions that affect the central nervous system, abbreviated as CNS. These reactions may include common effects like dizziness or headache, and in rare instances, may involve symptoms such as hyperactivity or insomnia (difficulty sleeping).

Q: What are the rules about using Clavodar with alcohol?

A: No specific interaction is formally documented between alcohol consumption and this medicine in the official prescribing information.

Q: Can Clavodar affect fertility in men or women?

A: Regulatory documents include non-clinical data, which are studies that do not involve human patients. These studies indicate that there are no specific hazards revealed regarding potential reproductive toxicity or effects on fertility.

Q: Where can I find reliable, official information about Clavodar studies?

A: Official information about the medicine's evidence and regulatory status is accessible through government resources. These include the DailyMed database from the U.S. National Institutes of Health (NIH) or the complete official Prescribing Information documents for the product.

Q: What happens if Clavodar is taken for a longer time than prescribed?

A: The treatment course should not be extended beyond 14 days without review by a healthcare provider. Official documents indicate that extended use or high doses can rarely be associated with kidney issues, such as crystalluria (crystals in the urine), or liver issues.

Q: Does Clavodar have any known impact on driving or operating machinery?

A: Official documents state that this medicine may cause adverse reactions such as dizziness or convulsions. These effects could potentially affect your ability to drive or safely operate machinery, and caution is advised.

Q: Can Clavodar change the results of certain lab tests?

A: Official labeling indicates that Clavodar can sometimes interfere with certain laboratory results. It may cause non-specific binding on red blood cell membranes (which can affect the Coombs test) and may also affect certain laboratory tests used to measure urine glucose.

Q: Is it necessary to finish the entire course of Clavodar even if I feel better?

A: Official documents emphasize that a patient should complete the entire course as prescribed by their healthcare provider. This is done to support the elimination of the bacterial infection and reduce the risk of treatment failure or the development of antibiotic resistance.

Q: Is there a generic version of Clavodar available?

A: The active ingredients in Clavodar, Amoxicillin and Clavulanic Acid, are widely available in generic formulations after their initial patents have expired. Availability of specific brands or generics may vary based on location.

Q: How long does Clavodar stay in your system after stopping treatment?

A: According to the official pharmacokinetics data, which describes how the body handles the drug, the active ingredients are generally described as being eliminated from the plasma with a half-life of approximately one hour for both amoxicillin and clavulanic acid.

Q: What are the initial symptoms of taking too much Clavodar?

A: Symptoms of taking too much of this medicine reported in regulatory documents are generally related to gastrointestinal upset (such as diarrhea). In high dose or overdose cases, more severe effects like renal impairment (crystalluria) and convulsions (seizures) have also been reported.

How should Clavodar be stored and disposed of?

The required storage conditions for Clavodar (amoxicillin and clavulanate potassium) differ based on the specific formulation.

Storage and Stability

Formulation Required Storage Condition Stability Limit
Tablets (Dry) Store at Controlled Room Temperature, typically below 25 °C (77 °F). Defined by expiry date.
Oral Suspension (Liquid) Must be stored under refrigeration (2 °C to 8 °C) after mixing. Must be discarded after 10 days.

The medication must be kept in its original container and tightly closed. Both forms must be protected from excess heat, moisture, and light. The liquid suspension must not be frozen. All forms must be kept out of the sight and reach of children.

Disposal

Unused or expired Clavodar must be disposed of according to local regulations. Any remaining liquid suspension must be discarded after the 10-day stability period.

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

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