Claron

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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 Claron

Claron: Identity and Pharmacological Class

Property Description
Active Ingredient Clarithromycin
Forms Tablets, Oral Suspension, IV Injection
Pharmacological Class Macrolide Antibiotic
General Purpose To combat susceptible bacterial infections
Origin Semi-synthetic derivative of Erythromycin

Claron is a prescription-only pharmaceutical preparation identified by its active ingredient, Clarithromycin, and officially classified as a Macrolide Antibiotic. This classification places it within the anti-infective class, indicating its primary therapeutic function is to combat specific bacterial pathogens. Clarithromycin exhibits superior stability compared to its predecessor, which is a key factor in its consistent clinical performance.

The active compound, Clarithromycin, is technically a semi-synthetic derivative of the naturally occurring antibiotic Erythromycin. This structural modification, a core differentiator, ensures the molecule is more stable in the acidic environment of the stomach, improving its oral absorption and overall systemic delivery. As a Macrolide, Claron is used for treating common microbial infections, such as those affecting the respiratory tract, an application recognized for this class of medicine.


Composition, Forms, and General Purpose

The medicine is a single-component product whose therapeutic action is derived solely from the active ingredient Clarithromycin. Claron is available in several high-level dosage forms for both oral and parenteral routes of administration, including film-coated tablets, granules for oral suspension (specifically catering to pediatric use or patients with swallowing difficulties), and sterile solutions intended for intravenous injection.

These diverse forms allow the medicine to be administered across various patient needs and clinical settings. The general therapeutic purpose of this Macrolide Antibiotic is to provide broad antibacterial coverage by disrupting the essential functions of susceptible microorganisms. It achieves this by acting as a protein synthesis inhibitor, a mode of action that halts the growth and multiplication of bacteria. This means the medicine serves as an option for treating various bacterial challenges across different body systems.

Regulatory References

  1. Clarithromycin: MedlinePlus Drug Information

What side effects are possible with Claron?

Claron's official safety profile is based on data collected through clinical trials and mandated post-authorization monitoring, classifying known risks and tracking events of special interest.

Adverse Reactions and Safety Surveillance

Adverse reactions are formally categorized by frequency (e.g., very common, common, uncommon, rare, very rare, not known) and by the System Organ Class (SOC) of the body system affected, such as infections, blood and lymphatic disorders, and cardiac issues.

Classification Examples of Reactions/Focus Areas
System Organ Classes Infections and Infestations, Neoplasms (benign/malignant), Blood and Lymphatic System Disorders
Adverse Events of Special Interest Malignancies, Severe Infections, Tuberculosis, Progressive Multifocal Leukoencephalopathy (PML), and other Opportunistic Infections

Serious Adverse Reactions

Serious Adverse Reactions are defined in regulatory documents as events that are noxious and unintended and may result in death, be life-threatening, require or prolong hospitalization, cause congenital malformation, or result in persistent or significant disability. The most critical serious events are subject to expedited regulatory reporting.

Population-Specific Safety Information

Regulatory documents emphasize safety considerations for specific patient populations, including:

  • Long-Term Exposure: The medicine is subject to required, long-term Post-Authorization Safety Studies (PASS) to characterize the potential for rare or delayed adverse events of special interest, such as malignancies, over many years of follow-up.
  • Pregnancy and Reproductive Potential: Exposure during pregnancy is a factor subject to specific regulatory reporting requirements. Females of reproductive potential are often advised in labeling regarding contraception.

Safety Restrictions and Limitations

The regulatory safety profile requires continuous, active surveillance for specific adverse events due to the drug's action, necessitating long-term monitoring as defined in the official safety studies. The reporting of adverse events in special situations, such as overdose or medication error, is also subject to mandatory, expedited regulatory timelines.

Overdose and Emergency Response

Overdose and When to Seek Help

Official regulatory documents define Claron (Clarithromycin) overdose by specific documented manifestations and mandated emergency actions. Overdose is primarily characterized by severe gastrointestinal distress, including prominent abdominal pain, nausea, vomiting, and diarrhea. Additionally, adverse neurological effects such as confusion and hallucinations have been associated with high drug concentrations.

Documented Risks and Emergency Actions

The most serious documented outcome linked to overdose exposure is cardiotoxicity. This includes the risk of QT interval prolongation and potentially fatal ventricular arrhythmias, such as Torsades de pointes. This risk is particularly relevant for patients with underlying cardiac issues or electrolyte imbalances, such as low potassium or magnesium levels.

Regulators explicitly require individuals who suspect an overdose to seek immediate medical attention or call a Poison Help line immediately. Urgent medical services must be contacted if the affected person shows critical signs, such as collapse, seizure, trouble breathing, or inability to be awakened.

Management of acute overdose consists of symptomatic and supportive measures, including steps to promote the prompt elimination of unabsorbed drug. The official labeling states that Clarithromycin concentrations are not expected to be appreciably affected by hemodialysis or peritoneal dialysis, indicating these procedures are generally ineffective for elimination.

Therapeutic Uses of Claron

Claron: Main Uses and Therapeutic Benefits

Claron (Clarithromycin) is commonly used to address bacterial infections across several key domains. It plays a role in managing symptoms and supporting the body during the resolution of the bacterial cause. The medication is generally applied in contexts where additional symptomatic support is needed, providing assistance in clinical settings marked by acute symptomatic episodes and discomfort.


Relief from Acute Respiratory and Ear Symptoms

This domain covers bacterial infections affecting the lungs, sinuses, throat, and middle ear, such as pneumonia, bronchitis, sinusitis, and pharyngitis. Claron is applied in contexts where symptoms like fever, severe cough, localized pain, and inflammation create noticeable interference with daily stability. It offers symptomatic relief that helps patients cope more steadily with difficult episodes and assists with maintaining functional stability.


Managing Skin Inflammation and Localized Infections

Claron is relevant in clinical settings marked by infections of the skin and soft tissue, including conditions like cellulitis and erysipelas. It helps address groups of symptoms that may appear suddenly, such as redness, swelling, and localized pain. The therapeutic support provided helps ease the overall burden of these symptoms and supports the patient during difficult episodes by easing distress in the affected area.


Addressing Specialized Pathogens and Therapeutic Alternatives

This category includes the medication's use in combination therapy applied in addressing H. pylori associated with ulcers, and the management of complex infections like disseminated Mycobacterium avium Complex (MAC). Furthermore, Claron is often used when standard penicillin or beta-lactam antibiotics are not suitable due to patient allergies, which helps ensure that individuals can still receive essential, short-term symptomatic support when infections arise.


Quick Fact: Relief for Localized Pain and Fever Claron is commonly used to help manage the systemic symptoms related to fever and the localized discomfort of pain in conditions like bacterial ear infections and sinusitis.

Regulatory References

  1. Official FDA Label Information

Eligibility and Restrictions for Use

Claron (Clarithromycin) eligibility is strictly defined by official regulatory labeling, outlining populations who may use the medicine and those who must not.

Absolute Contraindications

The medicine is strictly contraindicated for patients with known hypersensitivity to Clarithromycin or any macrolide antibiotic. Contraindication also applies to those with a history of QT prolongation or ventricular cardiac arrhythmia (including Torsades de Pointes), and uncorrected hypokalaemia. Use is prohibited in patients with severe hepatic failure combined with renal impairment, and those with a history of cholestatic jaundice linked to previous Clarithromycin use. Concomitant use with certain drugs, such as Simvastatin or Ergot alkaloids, also establishes an absolute contraindication.

Population Restrictions

Eligibility is restricted based on age and organ function. Safety and efficacy are not established for infants younger than 6 months. The tablet formulation is not recommended for children under 12 years, who should use the oral suspension. Patients with severe renal impairment (creatinine clearance < 30 mL/min) require conditional use, as the dosage must be reduced by half. Use is not recommended during pregnancy, especially the first trimester, unless there is no appropriate alternative therapy. Use in breastfeeding is generally acceptable but requires caution and infant monitoring.

What should I know about interactions with other medicines?

Interactions with other medicines and products

This section outlines documented interactions between [Claron] and other medicinal products, based strictly on official regulatory labeling.

Interaction Mechanism/Category Practical Constraint/Requirement
Potent CYP3A Inhibition Co-administration is prohibited with specific medicines (e.g., Lovastatin, Simvastatin, Oral Midazolam, Ergot Alkaloids) due to significant increase in the co-administered drug’s exposure.
Drugs Affecting QT Interval Co-administration is contraindicated with certain medicines (e.g., Cisapride, Astemizole) that can prolong the QT interval, due to increased risk of severe cardiac arrhythmias.
Substrates of CYP3A/P-gp Co-administration with drugs primarily metabolized by CYP3A or transported by P-glycoprotein (e.g., Digoxin, Phenytoin, Warfarin) requires close monitoring and potential dosage adjustment of the co-administered drug.
Potent CYP3A Inducers Exposure to [Claron] is reduced by potent inducers (e.g., Rifampin), potentially resulting in sub-therapeutic concentrations; alternative therapies should be considered.

Official documents classify certain combinations as contraindicated due to the high risk of serious adverse effects, such as acute ergot toxicity or myopathy/rhabdomyolysis. For other clinically significant interactions, the regulatory guidance requires intensive patient monitoring or strict dosage limitations to manage altered drug concentrations. The effect of gastric acid reducers may also lead to a requirement for administration timing separation to ensure adequate absorption.

Mechanism of Action

️ Targeting the Bacterial Protein Synthesis Machinery

The primary mode of action for Clarithromycin is the reversible inhibition of protein elongation in susceptible bacteria. The molecule achieves this by specifically binding to the 23S ribosomal RNA (rRNA) component of the bacterial 50S ribosomal subunit, which structurally blocks the continuation of the nascent peptide chain. This molecular obstruction functionally suppresses microbial growth and replication, leading to a measurable alteration in the microbial population dynamics.

️ Synergistic Activity and Enhanced Local Efficacy

This mechanism is augmented by two factors: the active 14-hydroxyclarithromycin metabolite, which cooperates with the parent drug to reinforce ribosomal inhibition, and the molecule's ability to concentrate within phagocytic cells. These actions facilitate sustained inhibition of bacterial growth at the cellular level and enhance local drug concentration, complementing the core mechanism and influencing the host's inflammatory response through mediator modulation.

Dosage and Administration Information

How to Use Claron: Administration Guidelines

Claron (Clarithromycin) follows administration protocols designed to ensure correct systemic delivery. These guidelines address the route of delivery, frequency, timing in relation to food, and dose adjustments for specific patient conditions.


Routes and Forms

Instruction Administration Details
Route of Administration Primarily Oral (immediate-release and extended-release tablets, suspension). The Intravenous (IV) route is also utilized for administration in severe cases or supervised settings.
Dosing Schedule (Adult) Standard dosing for immediate-release forms is 250 mg to 500 mg twice daily. The extended-release form is taken as 1000 mg once daily.

Contextual and Time-Based Instructions

The frequency of use is typically twice daily (q12h) for immediate-release formulations, while the extended-release form involves once daily (q24h) administration. The IV solution, which is generally limited to 2 to 5 days, is typically infused over a 60-minute time period.

Regarding meals, immediate-release tablets or suspension may be taken with or without food. However, the extended-release tablets are intended to be swallowed whole with food to ensure correct drug absorption; they are not to be crushed, broken, or chewed.

Population-Specific Use

Dose adjustment is utilized for certain groups. For patients with severe renal impairment (creatinine clearance less than 30 mL/min), protocols often include a reduction of the dosage by one-half. Pediatric dosing is weight-based, typically 15 mg/kg/day divided every 12 hours. Most courses for non-mycobacterial infections are limited to a duration of 7 to 14 days.

Recent Clinical Evidence

Recent Clinical Evidence Overview

Research has explored the effectiveness of the drug, an analgesic evaluated for acute pain relief. Research evaluated the drug's activity in laboratory models and explored its potential influence on biological processes, including prostaglandin synthesis. Some research includes analysis of the drug's absorption and tolerability in varying patient conditions.


Efficacy in Chronic Pain Conditions

Osteoarthritis

Clinical trials have examined whether inflammation and pain scores are affected in patients with osteoarthritis. Research has investigated study subjects with inflammation within this context.

Combination Therapy

Research has evaluated whether the combination affects patient compliance and pain management compared to monotherapy. This strategy has been studied in patient populations experiencing chronic musculoskeletal pain.


Safety and Long-Term Use

Gastrointestinal and Renal Studies

Studies have investigated long-term use and potential risks. Research has included investigation into renal function parameters in patients with pre-existing kidney conditions.

Use for Headache

Studies have evaluated whether it affects the severity and frequency of tension headaches.

Key Studies & References

  1. Assessment of Gastrointestinal and Renal Side Effects Associated with Long-Term Use of Over-the-Counter Painkiller Tablets. A Cross-Sectional Clinical Study
  2. COX Inhibitors - StatPearls - NCBI Bookshelf (Mechanism of Action, GI/Renal Risk)

Frequently Asked Questions (FAQ)

Common questions about Claron (FAQ)

Q: What are the most commonly reported side effects of Claron?

Official clinical trial data indicates that the most frequently reported adverse reactions are gastrointestinal issues. These commonly include abdominal pain, diarrhea, nausea, vomiting, and an altered sense of taste (dysgeusia). This information is derived from mandated safety reporting.

Q: Can Claron be used by older adults?

Official prescribing information notes that older (geriatric) patients may have increased susceptibility to certain drug effects. Specifically, there is information regarding potential effects on the heart’s QT interval, which is noted as a specific regulatory consideration.

Q: What are some less common but serious side effects of Claron?

Regulatory documents describe several serious, though less common, adverse reactions. These include severe acute hypersensitivity reactions, such as anaphylaxis, and issues related to the heart rhythm, specifically QT prolongation. Additionally, problems with the liver, known as hepatotoxicity, are among the serious events mentioned.

Q: Do official studies suggest that Claron is effective?

Claron is officially classified as a Macrolide Antibiotic by regulatory bodies. It is indicated for treating mild to moderate infections that are known or strongly suspected to be caused by susceptible bacteria. This established classification is defined by regulatory documents as its therapeutic purpose against specific microbial challenges.

Q: Is Claron an FDA-approved medicine?

Claron (Clarithromycin) is a prescription medicine that has official labeling and prescribing information published by regulatory bodies. These bodies include the U.S. Food and Drug Administration (FDA) and the National Institutes of Health (NIH), which publish the regulatory information that supports its use.

Q: Does Claron affect mood or cause emotional changes?

Studies and official information indicate that certain mood or psychological effects have been noted. Regulatory documents point out that adverse reactions such as depression was reported as a reason for some participants to stop taking the drug in clinical trials.

Q: How quickly should I expect to see an effect from Claron?

Pharmacokinetic studies describe how the medicine is processed in the body. According to this data, the steady-state plasma concentration of the active substance, which relates to absorption, is generally reached within three to four days after treatment initiation.

Q: Does Claron have a risk of addiction or dependence?

Official documents do not describe a risk of addiction or dependence for this medicine. Claron (Clarithromycin) is not categorized as a controlled substance by the U.S. Drug Enforcement Administration (DEA).

Q: Can Claron affect the results of lab tests?

Official clinical trial data indicates that certain changes in specific laboratory values were tracked as monitoring parameters during studies. It is noted that some lab test results may be observed to change during therapy.

Q: Can Claron cause weight gain or loss?

Regulatory research documents show that weight changes were specific parameters tracked during clinical trials. For example, a weight gain of greater than 3% was among the data monitored during the studies.

Q: Can herbal or natural supplements interact with Claron?

The official prescribing information notes that the medicine interacts with other substances that affect the CYP3A enzyme system, which is part of the body’s metabolism. Due to this known metabolic pathway, any product, including herbal or natural supplements, that affects CYP3A may be a regulatory consideration.

Q: What is the difference between Claron and its generic version?

The active component in the brand name medicine Claron is Clarithromycin, which is the official generic name. Regulatory bodies confirm the identity and therapeutic function of this active substance.

Q: How long does Claron typically stay in a person's system?

Pharmacokinetic data provides information on the amount of time required to eliminate the substance from the body. The elimination half-life of the active substance is approximately 3 to 4 hours for lower measured doses and 5 to 7 hours for higher measured doses.

Q: Can Claron be taken with vitamins or mineral supplements?

Official information regarding the medicine focuses on interactions with other drugs and the CYP3A enzyme system. There is no specific blanket statement provided for the use of all vitamins and mineral supplements alongside Claron.

Q: Is Claron generally used by both men and women for the approved indications?

The medicine is studied in both male and female subjects for its approved uses. Its therapeutic indications are not specific to sex, outside of warnings and considerations related to reproductive potential like pregnancy or breastfeeding.

How should Claron be stored and disposed of?

How to Store and Dispose of Claron (Clarithromycin)

Official regulatory documentation details specific storage and disposal requirements to maintain Claron's stability and ensure safety.

Storage Requirements

Dosage Form Temperature and Handling Constraints
Oral Tablets Store at Controlled Room Temperature (20 C to 25 C). Keep the container tightly closed and protect from light and excessive moisture.
Oral Suspension Do not refrigerate or freeze the liquid. Store at room temperature (15 C to 30 C). The unused portion must be discarded after 14 days.

Disposal and Safety

All forms must be stored out of the sight and reach of children.

Unused or expired medicine should be disposed of by taking it to an authorized drug take-back program. Medicines should not be disposed of via wastewater or flushed down the toilet unless specifically authorized by the prescribing information.

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

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