Ketozol

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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 Ketozol

Property Description
Active Ingredient Ketoconazole
Forms Cream, Shampoo, Topical Solution, Tablet
Pharmacological Class Azole Antifungal Agent
General Purpose Containment of Fungal Infections (Mycoses)
Origin Synthetic (Imidazole Derivative)

Ketozol is the commercial identifier for a medicinal preparation whose active component is Ketoconazole, a synthetic compound used exclusively to manage and contain fungal infections. It is fundamentally classified as an Azole antifungal agent due to its chemical structure, specifically its imidazole derivative core. The core function of Ketozol is widely recognized for its broad ability to inhibit fungal growth across different forms.


What is the Pharmacological Classification and Identity of Ketozol?

Ketozol belongs to the high-level antifungal agent class, consistently categorized as an Azole antimycotic in pharmacological literature. The single active ingredient, Ketoconazole, is synthetic in origin and acts as a broad-spectrum agent. Clinical experience supports the use of this compound against numerous fungal pathogens. As an Azole, Ketoconazole is distinguished by its suitability for both topical and, in specific cases, oral systemic applications.

What is Ketozol Composed of and What are its Available Forms?

The composition of Ketozol is centered on the active substance, Ketoconazole, formulated into various bases suitable for delivery. As a single-ingredient product, it is available in multiple dosage forms, including a cream, a shampoo, and a topical solution for application to the skin, as well as an oral tablet. These preparations facilitate either topical or oral administration, addressing the varied needs of patients with localized or disseminated mycoses.

What is the General Therapeutic Purpose of Ketozol?

The general purpose of Ketozol is the containment and control of diseases resulting from fungal pathogens. This utility is achieved because the substance directly interrupts the fundamental biological processes of the fungal cell. Specifically, Ketozol works by inhibiting the synthesis of ergosterol, a sterol compound essential for the formation and integrity of the fungal cell membrane. This targeted action hinders the fungus's ability to multiply, providing both a fungistatic and, potentially, a fungicidal effect.

What side effects are possible with Ketozol?

Possible side effects and safety information

The official safety profile for Ketozol (ketoconazole) is structured around two primary categories: systemic risks for the oral tablet and localized reactions for the topical formulations (cream, shampoo, solution). All documented adverse reactions and safety statements adhere strictly to classifications found in government regulatory documents.

Serious Systemic Adverse Reactions

For the oral tablet, regulatory agencies document the potential for rare but serious adverse reactions. The most significant risks include potentially fatal hepatotoxicity (severe liver injury) and adrenal insufficiency (impaired cortisol production).

Other serious documented effects include life-threatening cardiac arrhythmias, such as Torsades de pointes, when the oral tablet is co-administered with certain other medicines that are contra-indicated. Anaphylaxis (severe allergic reaction) is also noted as a possible rare event.

Adverse Reactions by Organ System and Frequency

Adverse reactions are classified by the physiological system affected:

  • Hepato-biliary disorders: Liver injury.
  • Endocrine disorders: Adrenal insufficiency, gynecomastia.
  • Gastrointestinal disorders: Common effects include nausea and vomiting.
  • Skin and Subcutaneous Tissue Disorders: For topical use, common reactions are localized pruritus (itching), erythema, and a burning sensation at the application site.

Population and Safety Constraints

The use of the oral tablet is officially contra-indicated in individuals with existing acute or chronic liver disease due to the enhanced risk of hepatotoxicity. Furthermore, the risk of severe liver injury is officially stated as usually being observed at treatment initiation and within the first six months of oral therapy. The product is also contra-indicated in individuals with known hypersensitivity to the active substance or any other imidazole antifungal derivative.

Overdose and Emergency Response

Overdose and When to Seek Help

This information describes the documented manifestations of Ketozol (Ketoconazole) overexposure and the emergency actions mandated by government regulatory authorities.

Category Official Regulatory Statement
Documented Overdose Manifestations Acute liver injury (hepatocellular and cholestatic), Jaundice, Nausea, Vomiting, Fatigue, Abdominal pain, Hypotension, Hyponatremia, Hyperkalemia, and QT prolongation.
Physiological Systems Affected Hepatic system, Cardiovascular system, and Endocrine system (adrenal function).
Dose-Related Factors Overexposure to the systemic (oral tablet) form. Accidental ingestion of topical formulations requires monitoring.
Population-Specific Notes Greater sensitivity of some older individuals cannot be ruled out.
Emergency-Response Statements Contact a Poison Control Center or seek immediate medical attention. Gastric lavage and activated charcoal may be considered if administered within one hour of ingestion.
When Immediate Medical Help Is Required Seek immediate medical attention upon suspicion of overdose. Emergency services must be contacted if the patient has collapsed, is seizing, has trouble breathing, or cannot be awakened.

Overdose Classifications (High-Level)

Classification Type Official Regulatory Statement
Severity Classification Serious hepatotoxicity, Fatal outcome, Life-threatening ventricular dysrhythmias (e.g., Torsades de pointes).
Overdose Management Context Management is symptomatic and supportive; no specific antidote is known.

Official Overdose Statements

The official overdose profile is defined by the risks of severe, life-threatening systemic toxicities, including serious hepatotoxicity leading to potential liver transplantation or fatal outcomes, and severe cardiac risks such as QT prolongation and ventricular dysrhythmias. Regulatory guidance mandates seeking immediate medical attention upon suspicion of overdose due to these critical risks. Management procedures described in regulatory documents include potential gastrointestinal decontamination and targeted supportive care, such as monitoring blood pressure and administering hydrocortisone for associated adrenal dysfunction, acknowledging the absence of a known specific antidote.

Therapeutic Uses of Ketozol

What Ketozol Treats: Main Uses and Benefits

This medication is commonly used to help with symptomatic relief from the uncomfortable manifestations of fungal and yeast infections on the skin and scalp. Ketozol is relevant for easing symptoms associated with common conditions such as athlete's foot, jock itch, ringworm (tinea corporis), tinea versicolor, and seborrheic dermatitis.

It may assist with easing persistent symptoms like itching, burning, and irritation, contributing to improved comfort during active infection. Furthermore, it is generally applied in situations where symptoms include visible skin changes, such as excessive flaking, scaling, and discoloration. This supportive therapeutic approach helps manage these manifestations, which assists with maintaining functional stability when symptoms interfere with routine activities.

This symptomatic assistance is relevant for easing distress and contributes to improved comfort during periods of heightened symptoms. The primary focus is to support the patient during difficult episodes by managing symptoms that interfere with daily functioning.


Quick Fact: Relief for Persistent Discomfort

Ketozol is commonly used to help with addressing symptom clusters that may become intense or disruptive, supporting general well-being during symptomatic phases.

Regulatory References

  1. NIH MedlinePlus overview

Eligibility and Restrictions for Use

The eligibility for Ketozol (ketoconazole) is highly differentiated by the dosage form, with the oral tablet carrying significantly more stringent restrictions and formal contraindications set by regulatory bodies such as the FDA and EMA.

Eligibility Scope

Classification Key Restriction Applies To
Contraindicated Acute/chronic liver disease or elevated liver enzymes (ALT/AST > 2x ULN). Oral Tablet
Contraindicated Documented QTc prolongation. Oral Tablet
Contraindicated Known hypersensitivity to the drug or excipients. All Forms
Contraindicated Pregnancy or breastfeeding. Oral Tablet
Restricted Use Use only when alternative effective antifungal therapy is not available or tolerated. Oral Tablet
Use Not Established Safety and effectiveness in children under 12 years of age. Topical and Oral Forms

Official Eligibility Statements

  • The oral tablet is officially restricted to treating certain serious fungal infections only when alternative treatment options have failed or are not tolerated, and is not indicated for fungal meningitis.
  • Individuals with chronic or acute liver disease, congenital heart rhythm abnormalities (QTc prolongation), or a known allergy to the drug are formally classified as non-eligible for the oral tablet.
  • Pregnant and breastfeeding women are explicitly prohibited from using the oral tablet.
  • The safety and effectiveness of the topical forms (cream, shampoo) have not been established in pediatric populations.

These constraints define who is officially allowed to use the medicine based on a strict benefit-to-risk assessment documented in the official prescribing information.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Ketozol (Ketoconazole) has an extensive interaction profile primarily due to its designation as a strong inhibitor of the CYP3A4 enzyme and its effect on specific drug transporters, such as P-glycoprotein (P-gp) and BCRP. These interactions can significantly increase the blood levels of co-administered medicines, potentially leading to serious or life-threatening adverse effects.

Contraindicated Combinations

Certain medicines are officially contraindicated (must not be taken) with Ketozol. These combinations are restricted because the resulting high concentrations of the co-administered drug can lead to critical consequences like QTc prolongation (a dangerous change in heart rhythm) or severe sedation. Examples of medicine classes often restricted include specific antiarrhythmics, certain statins (HMG-CoA Reductase Inhibitors) like Lovastatin and Simvastatin, and particular ergot alkaloids.

Other Clinically Significant Interactions

  • CYP3A4 Substrates: For many drugs metabolized by CYP3A4, dose adjustments or careful therapeutic drug monitoring are required when used with Ketozol to prevent elevated exposure.
  • Acid-Reducing Agents: Medicines that decrease stomach acidity (e.g., antacids, H2-receptor antagonists, proton pump inhibitors) can impair the absorption of oral Ketozol, reducing its effectiveness. Administration timing may need to be separated by at least two hours.

Mechanism of Action

Inhibition of Fungal Sterol Biosynthesis

The mechanism of Ketozol is initiated by a direct biological effect on the fungal pathogen. Its action involves two mechanistic domains that result in the interruption of fungal proliferation.

The active substance, Ketoconazole, is a specific inhibitor of the fungal enzyme Lanosterol 14alpha-demethylase, a key component in the fungal sterol biosynthesis pathway. The drug achieves this by binding directly to the enzyme's heme iron, causing the non-competitive inhibition of a required step in ergosterol production.

Disruption of Fungal Cell Membrane Homeostasis

By blocking the production of ergosterol and causing the accumulation of toxic methyl-sterols, the mechanism disrupts the structural integrity and functional homeostasis of the fungal cell membrane. This results in the uncontrolled leakage of essential cellular contents and impairs the organism's cellular processes required for growth and replication, leading to a fungistatic or fungicidal effect.

Dosage and Administration Information

How to Use Ketozol: Official Administration Guidelines

Ketozol (Ketoconazole) is administered via both oral and topical routes, and its use is governed by specific instructions. Adherence to these guidelines is essential for proper administration.

Approved Routes and Forms

Ketozol is available as an oral 200 mg tablet for systemic use and in various topical forms (cream, shampoo, gel, or foam) for application to the skin or scalp. The topical forms are strictly for external use.

Standard Dosing and Frequency

Administration Route Standard Adult Dose Frequency and Timing Key Procedural Note
Oral Tablet (200 mg) Starting dose: 200 mg Once daily Must be taken with a meal
Topical Cream (2%) Apply a thin layer to affected area Once daily or Twice daily Gently rub into the affected area
Topical Shampoo (2%) Apply to affected area Twice weekly (for treatment) Leave lather on for 3-5 minutes before rinsing

Special Administration Conditions

Oral tablets require an acidic environment for dissolution; therefore, they should be taken with a meal to enhance absorption. If a patient has reduced gastric acidity, they may be instructed to take the tablet with an acidic beverage. Antacids containing aluminum should be taken at least 1 hour before or 2 hours after the oral dose.

Course Duration and Specific Populations

Treatment duration varies significantly: for systemic use, it may continue for a minimum of 6 months, while topical cream applications for conditions like athlete's foot may require up to 6 weeks. For pediatric patients aged 2 years and older, oral dosing is weight-based, typically 3.3 to 6.6 mg/kg/day. No specific dose adjustments are typically provided for renal impairment.

Recent Clinical Evidence

Ketozol: Overview of Clinical Evidence


Evidence for Topical Skin and Scalp Infections

Clinical evidence for Ketozol's topical forms, targeting conditions like seborrheic dermatitis, ringworm, and tinea versicolor, is largely derived from short-term Randomized Controlled Trials (RCTs). These studies were evaluated in adults and adolescents and researched the product compared to an inactive base or sometimes other treatments. Researchers monitored clinical endpoints, such as reduction in scaling, redness, and itching, alongside the measured rates of fungal clearance (mycological cure). The research explored treatment over defined time intervals, typically ranging from 2 to 6 weeks. Studies report how symptoms evolved in the observed populations during these short durations.


Evidence for Restricted Systemic Use

The evidence base for the oral tablet form, was evaluated in the context of severe, endemic systemic fungal infections. This relies on foundational early clinical research, as well as subsequent observational studies and retrospective case reports. This research tracked outcomes related to fungal clearance and survival. However, the use of the oral tablet form is highly restricted today by regulators. This restriction is based on specific patterns observed in some studies that influenced the regulatory position. The evidence is generally derived from older studies with modest sample sizes and is not directly comparable to the research for alternative systemic antifungal agents.


Research Limitations and Uncertainty

Data for certain groups remain insufficient, especially for children younger than two years old. Furthermore, while short-term findings apply to the populations studied, there is limited information for long-term outcomes regarding the durability of response or the sustained absence of symptoms across all indications. Certainty remains low in predicting long-term status, and comparative evidence is lacking against the full range of newer topical and systemic antifungal therapies now available.

Key Studies & References Ketoconazole Topical Antifungal Overview (MedlinePlus)

Frequently Asked Questions (FAQ)

Common questions about Ketozol (FAQ)

Q: Is Ketozol used for more than one condition?

Yes, the active ingredient in Ketozol is indicated for the management of various fungal infections. Official product information describes its use for both severe systemic infections, when prescribed as an oral tablet, and for treating common localized fungal issues like seborrheic dermatitis and ringworm, when prescribed in topical forms.

Q: Is it normal to feel tired when starting Ketozol?

Regulatory documents mention that unusual tiredness may be experienced by some patients receiving Ketozol. This symptom is generally classified among potential adverse effects that are associated with the drug's impact on the endocrine system or, in rare cases, liver function.

Q: Does Ketozol need to be taken every day, or just when needed?

The required frequency of use for Ketozol is dependent on the type of formulation and the specific condition being addressed. The oral tablet for systemic use is generally taken once daily. However, topical forms, such as the shampoo, are often used on a less frequent schedule, such as a set number of times per week.

Q: What is the longest someone typically uses Ketozol?

Official prescribing information indicates that the duration of treatment varies significantly based on the type of fungal infection. For minor topical issues, the course may only be a few weeks. In the case of severe systemic infections, treatment with the oral tablet may continue for a minimum of six months or potentially longer.

Q: If I miss a dose of Ketozol, what is the generally known guidance?

Official guidance for a missed topical dose is generally described as applying it as soon as the lapse is noticed. If it is close to the next scheduled dose, official guidance often describes skipping the missed application. Always consult the official patient information leaflet for the specific product being used.

Q: Are there any common foods or drinks that interact with Ketozol?

Official documents state that the oral tablet form of Ketozol is instructed to be taken with a meal. This is a condition of administration designed to improve the drug's absorption. No specific adverse food interactions are commonly noted beyond this requirement.

Q: Who is generally not eligible to take Ketozol?

Eligibility restrictions are most stringent for the oral tablet. Official contraindications include individuals with existing acute or chronic liver disease, congenital heart rhythm abnormalities (known as QTc prolongation), and women who are pregnant or breastfeeding. The topical forms are also contraindicated for individuals with known hypersensitivity to the drug.

Q: Is Ketozol ever prescribed for children?

Official labeling for the oral tablet does include weight-based dosing for pediatric patients aged two years and older. However, the use of the oral tablet is highly restricted by regulatory bodies. Furthermore, the safety and effectiveness of the topical forms have generally not been established in children younger than 12 years of age.

Q: Are there any studies comparing Ketozol to not taking any medication for the condition?

Studies supporting the use of the topical forms of Ketozol have been evaluated against an inactive base, often referred to as a placebo. This research aimed to assess various clinical endpoints, such as the reduction of symptoms and rates of fungal clearance.

Q: Is Ketozol a new drug, or has it been used for many years?

The active ingredient in Ketozol has been available for many years. The oral formulation of the drug was first approved by the FDA in 1981, indicating it is an older, established medication in the Azole antifungal class.

Q: Is Ketozol available over the counter in any country?

Yes, some lower-strength topical formulations of Ketozol are approved for over-the-counter (OTC) use by regulatory agencies. For instance, certain 1% shampoos are available to the public for the control of conditions like dandruff.

Q: Does Ketozol change how I process other medications?

Yes, Ketozol can affect how the body processes other medications. Official documents classify it as a strong inhibitor of the CYP3A4 enzyme, which is a major processing system in the liver. This effect can significantly increase the concentration of many co-administered medicines in the bloodstream.

Q: Why is Ketozol sometimes taken with food?

The oral tablet is instructed to be taken with a meal to aid its absorption. An acidic environment is needed in the stomach for the drug to properly dissolve and be taken up by the body. Taking it with food helps create the necessary acidic conditions.

Q: What ingredients are in Ketozol besides the main active component?

Official labeling, such as that provided by the DailyMed, lists various inactive ingredients in the oral tablet formulation alongside the active ingredient, Ketoconazole. These ingredients include common pharmaceutical substances like corn starch, lactose monohydrate, and magnesium stearate.

Q: Does Ketozol cause weight gain or loss?

Weight loss, or anorexia, is noted in regulatory documents as a possible symptom associated with severe adverse effects of the oral tablet. However, official safety information does not explicitly list weight gain as a common side effect of Ketozol.

Q: Does Ketozol affect my blood pressure?

Official information notes that the oral tablet has contraindications related to co-administering certain drugs that can cause changes in blood pressure, such as hypotension (low blood pressure). The documented risk of severe cardiac rhythm problems, such as QTc prolongation, is also related to the body's cardiovascular function.

Q: Can Ketozol make you feel dizzy or affect your ability to drive?

Dizziness and somnolence (drowsiness) are reported as possible side effects in official regulatory documents. Official labeling states that if patients experience these effects, activities requiring mental alertness, such as driving or operating machinery, should be avoided.

Q: Does taking Ketozol with alcohol cause problems?

Official guidance describes that the consumption of alcoholic beverages during treatment may be inadvisable. This combination may be associated with an increased risk of liver damage and can also cause other symptoms, such as flushing, rash, nausea, and headache.

Q: Is Ketozol considered a common first-line treatment?

No, the oral tablet formulation is not classified as a common first-line treatment. Regulatory warnings state that this form of the drug should only be used when other effective antifungal therapies are not available or tolerated, and when the potential benefits are clearly judged to outweigh the known serious risks.

Q: Is there a link between Ketozol and mental health side effects?

Official documents list psychiatric disorders as a possible adverse reaction. These effects include symptoms such as nervousness and insomnia (trouble sleeping). In rare cases, severe depression has also been reported in association with the use of Ketozol.

Q: Can Ketozol affect fertility?

There is no evidence in official documents to indicate that Ketozol affects fertility in either men or women.

How should Ketozol be stored and disposed of?

Storage and Disposal Instructions for Ketozol

Official regulatory documents detail specific conditions required to maintain the stability and integrity of Ketozol (ketoconazole).


Mandatory Storage Conditions

Ketozol must be stored at controlled room temperature, typically 20 C to 25 C (68 F to 77 F), with permitted excursions up to 30 C [1.5, 4.2]. The product must be stored out of the sight and reach of children and the container must be kept tightly closed [1.5, 4.3]. Specific forms, such as the tablets and shampoo, require protection from light and moisture [1.5, 4.5]. For topical gels labeled as flammable, storage must be away from fire or flame [1.1].

Official Disposal Requirements

Expired or unused Ketozol should not be disposed of in household waste or wastewater [3.3]. The official guidance is to ask a healthcare professional or pharmacist how to properly discard the medicine, ensuring disposal is in accordance with local and national regulations [3.3, 4.5].

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

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