Dermoket

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Medically reviewed

Marina Burgos

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 Dermoket

What is Dermoket?

Dermoket is a pharmacological treatment categorized as an antifungal agent. It is primarily utilized to manage a variety of fungal and yeast infections that affect the skin and scalp. The active therapeutic component in Dermoket is ketoconazole, a synthetic imidazole derivative known for its ability to interfere with the metabolic processes of fungi.

Mechanism of Action

The preparation works by inhibiting the synthesis of ergosterol, a vital component of fungal cell membranes. By disrupting the structural integrity of these membranes, the medication prevents the fungi from growing and reproducing, eventually leading to the clearance of the infection.

Common Applications

Dermoket is commonly employed to address several dermatological conditions characterized by fungal overgrowth, including:

  • Dermatophytosis: Infections of the skin such as ringworm, athlete's foot, and jock itch.
  • Seborrheic Dermatitis: A common inflammatory skin condition that causes flaky, white to yellowish scales on oily areas such as the scalp or face.
  • Pityriasis Versicolor: A fungal infection that causes small, discolored patches of skin.
  • Cutaneous Candidiasis: Skin infections caused by yeast-like fungi.

Available Formulations

To accommodate different types of localized infections, Dermoket is typically manufactured in various topical forms. These include creams for application on the skin and medicated shampoos specifically designed for scalp-related conditions. These formulations allow for the direct application of the active ingredient to the affected site, limiting systemic absorption.

Regulatory References

  1. NIH, Ketoconazole - StatPearls

What side effects are possible with Dermoket?

Possible side effects and safety information

The official safety profile for topical ketoconazole is defined by reactions reported at the application site, as the medicine demonstrates minimal systemic absorption. Adverse reactions are classified by frequency and grouped into System-Organ Classes (SOC) by regulatory authorities.

Frequency-Classified Adverse Reactions

The following are classified according to the standard regulatory convention based on clinical data documented in official sources (e.g., Summary of Product Characteristics):

Frequency Category Representative Adverse Reactions
Common Application site burning sensation, erythema (redness), and pruritus (itching).
Uncommon Hypersensitivity, blistering, contact dermatitis, rash, dry skin, skin peeling, and local irritation or discomfort.
Not Known Urticaria (hives), angioedema (swelling beneath the skin), and hair color changes.

These effects primarily map to the Skin and Subcutaneous Tissue Disorders and General Disorders and Administration Site Conditions SOC.

Serious Safety Information

The most significant safety constraint is a known hypersensitivity to ketoconazole or any component of the formulation, which is a contraindication for use. While rare with topical preparations, serious hypersensitivity reactions, including angioedema and urticaria, have been documented during post-marketing surveillance.

Population Safety Notes

Due to the low concentration of the medicine in the bloodstream after topical application, official documents generally conclude that the risk to pregnant and lactating individuals is low or considered not relevant to the topical safety profile. Furthermore, most side effects are local and are reported to occur during the treatment period.

Overdose and Emergency Response

Overdose and when to seek help — Official Regulatory Information for Dermoket (Ketoconazole)

This information is drawn exclusively from the overdose and emergency sections of governmental regulatory documents (e.g., FDA, EMA SmPC) for Ketoconazole.

Overdose Scope

Domain Official Regulatory Statement
Documented Overdose Presentations Acute systemic overdose may present with Nausea, Vomiting, Headache, and Dizziness. Topical application is generally not associated with systemic overdose.
Physiological Systems Affected (as stated in label) Hepatic System (risk of severe Hepatotoxicity), Endocrine System (risk of Adrenal Insufficiency), and Cardiovascular System (potential for QT interval prolongation).
Dose-related or exposure-related factors (if applicable) Overdose risks are primarily associated with acute, high-dose ingestion of the systemic form.
Population-specific overdose notes (if applicable) Individuals with pre-existing hepatic impairment may be at increased risk for severe outcomes.
Emergency-response statements (as written in official documents) Management requires Symptomatic and supportive treatment. Procedures may include gastric lavage and activated charcoal within the first hour of ingestion. No specific antidote is known.
When immediate medical help is required (label-derived phrasing only) Seek immediate medical attention upon suspected overdose or accidental ingestion.

Overdose Classifications (High-Level)

Classification Official Regulatory Statement
Severity classification (as defined in official documents) Potential for Severe or Life-Threatening outcomes due to hepatic and cardiac risks.
Regulatory basis (EMA / FDA / etc.) Information derived from FDA Prescribing Information and EMA Summary of Product Characteristics (SmPC).
Overdose-context constraints (as defined in official documents) Management is restricted to supportive measures and continuous monitoring, specifically hepatic function and ECG.

Resulting Overdose Structure

Official overdose statements:

  • The regulatory label documents the potential for nausea, vomiting, headache, and dizziness following acute systemic overdose.
  • Overdose carries a risk of Hepatotoxicity and Adrenal Insufficiency, requiring urgent medical assessment.
  • Immediate medical attention must be sought upon suspected overdose or accidental ingestion.

Connection to the overall overdose profile (2–4 sentences): Regulatory documents define the systemic overdose profile based on the potential for life-threatening risks to the hepatic and cardiovascular systems. The need to seek immediate medical attention is explicitly mandated because of these severe potential outcomes. Management is officially specified as symptomatic and supportive treatment alongside mandatory organ monitoring, as no specific antidote is known.

Therapeutic Uses of Dermoket

Quick Facts

  • Therapeutic Domain: Fungal skin infections and seborrheic dermatitis.
  • Key Uses: Management of athlete's foot (tinea pedis), jock itch (tinea cruris), ringworm of the body (tinea corporis), and pityriasis versicolor.
  • Additional Management: Supports the management of flaking, scaling, and itching associated with seborrheic dermatitis.

Dermoket (ketoconazole topical) is an available option used for the localized management of various fungal and yeast-related skin conditions. It is indicated to address infections caused by susceptible fungi, including dermatophytes and Malassezia species.

Its primary uses involve supporting the resolution of superficial fungal infections such as tinea infections. These include ringworm of the body (tinea corporis), jock itch (tinea cruris), and athlete's foot (tinea pedis). The medication also assists in the management of pityriasis versicolor.

A key therapeutic benefit is its role in the management of seborrheic dermatitis. This condition involves flaking, scaling, and itching of the skin and scalp. By addressing the overgrowth of Malassezia yeast associated with this condition, Dermoket may help to reduce the associated discomfort and visible symptoms. Proper use as directed by a healthcare provider is essential for achieving the intended therapeutic effect.

Eligibility and Restrictions for Use

The regulatory eligibility for Dermoket (Ketoconazole) is fundamentally defined by the route of administration, distinguishing between its topical (cream, shampoo) and oral (tablet) forms, as mandated by official government regulatory documents.

Eligibility Scope Topical Forms Oral Tablet Forms
Use Allowed In Adults and Older Adults. Restricted to patients with life-threatening systemic fungal infections when alternative treatments are unavailable or not tolerated.
Contraindications Known Hypersensitivity to any component. Acute or Chronic Liver Disease. Co-administration with certain anti-arrhythmics or statins is contraindicated. Pregnancy and Breastfeeding is also a prohibition.
Pediatric Rules Safety and effectiveness have not been established in children younger than 12 years of age. Safety and effectiveness have not been established in children younger than 2 years of age.

Eligibility Classifications The most severe restriction is the Contraindicated classification applied to the oral tablets for patients with liver disease and those on specific concurrent medications, reflecting its systemic risk profile. Topical formulations carry less severe restrictions, primarily falling under the Safety Not Established status for younger children. The official criteria mandate that oral use is conditional upon the failure or intolerance of all alternative fungal therapies. This clear regulatory separation of eligible populations is based on the significant differences in systemic exposure and associated risks.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory information for Ketoconazole oral tablets establishes a profile centered on pharmacokinetic interactions, primarily due to its designation as a potent inhibitor of the CYP3A4 enzyme and the P-glycoprotein (P-gp) transporter. This inhibitory activity officially increases the systemic exposure of many co-administered medicinal products metabolized by these pathways.

Formal Restrictions and Interaction Outcomes

Category Interaction Profile Description
Contraindicated Combinations Co-administration is formally prohibited with specific CYP3A4 substrates (e.g., Dofetilide, Quinidine, Simvastatin) where elevated concentrations pose severe risks, such as life-threatening cardiac arrhythmias (torsades de pointes) or rhabdomyolysis.
Absorption Requirements Ketoconazole absorption is gastric acidity dependent. Acid-reducing agents (e.g., Antacids, PPIs) officially decrease its plasma exposure, necessitating specific timing separation rules for administration.
Exposure-Modifying Substances Strong CYP3A4 inducers (e.g., Rifampin) officially reduce Ketoconazole's plasma levels, potentially diminishing its fungistatic effect. Other CYP3A4 substrate medicines (e.g., Warfarin, Immunosuppressants) officially experience increased exposure and heightened activity.
Population Note The oral formulation is formally contraindicated in patients with acute or chronic hepatic impairment due to the significantly increased risk of liver toxicity, which is compounded by any drug-drug or substance interactions that affect liver function, including alcohol.

Mechanism of Action

Molecular Target: Inhibition of Fungal Ergosterol Synthesis

Ketoconazole functions by highly selective inhibition of the fungal enzyme Lanosterol 14alpha-demethylase (CYP51A1). This key molecular action blocks the metabolic pathway necessary for the production of ergosterol, the primary sterol component required for the structural integrity of the fungal cell membrane.

Cellular Consequence: Membrane Disruption and Fungistasis

The resulting depletion of ergosterol and the concurrent accumulation of toxic methylated sterols within the pathogen destabilize the fungal cell membrane, increasing its permeability. This physical failure impedes the organism's essential growth and replication processes, which results in a fungistatic action that restricts the pathogen's proliferation.

Mechanistic Limitations: Off-Target Enzyme Engagement

The core inhibitory mechanism of the drug is constrained by its potential to interact with certain mammalian P450 enzymes involved in human steroidogenesis. This off-target interaction limits the molecule's selectivity toward the fungal target, defining the biological scope where the mechanism is applied without causing unintended modulation of host hormone systems.

Dosage and Administration Information

How to Use Dermoket: Administration Guidelines

Instructions for Dermoket (ketoconazole) dictate distinct administration protocols depending on the formulation and intended use. The medicine is available for both oral (systemic) and topical (cutaneous) routes, with specific dosing and frequency rules.


Administration Scope and Dosing

Property Instruction based on Labeling
Route of Administration Oral for systemic use; Topical (Cream, Shampoo, Gel, Foam) for localized skin and scalp use.
Standard Adult Dose Oral: Typically initiated at 200 mg once daily, adjustable up to 400 mg once daily based on the specific systemic infection. Topical: Apply once or twice daily.
Frequency Pattern Oral: Once daily. Topical Shampoo: Used twice weekly for the treatment of seborrheic dermatitis, or intermittently (e.g., once every 1–2 weeks) for prophylaxis.
Timing with Meals Oral tablets must be taken with a meal to ensure proper systemic absorption.
Course Duration Topical treatment duration varies by infection: Tinea Versicolor is typically 2–3 weeks; Tinea Pedis may require up to 6 weeks.
Age-Group Rules Pediatric (Oral): Dosing for children 2 years and older is based on body weight, typically 3.3 to 6.6 mg/kg/day.

Special Procedural Conditions

Topical formulations are strictly for external use only. For the shampoo, the product must be lathered and allowed to remain on the skin or scalp for 3 to 5 minutes to ensure therapeutic contact time before rinsing. When transitioning a patient from long-term topical corticosteroid use to ketoconazole cream, it is recommended to follow a gradual withdrawal of the steroid over 2–3 weeks to mitigate any rebound effect. This structured procedural use dictates the method for administering the medicine.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Dermoket (Ketoconazole Topical)


Evidence for Use in Seborrheic Dermatitis (SD) and Dandruff

The research landscape for Dermoket in conditions characterized by fluctuating or episodic manifestations, such as seborrheic dermatitis, includes Systematic Reviews and Randomized Controlled Trials (RCTs). These studies included Adults and Adolescents (12 years and older). Researchers examined outcomes related to physical discomfort by measuring clinical signs such as scaling, redness, and itching, alongside monitoring the mycological clearance rate of the implicated organism.

Studies monitored short-term symptom changes, with most treatment phases running for two to four weeks. The structural evidence base for this indication is assigned the category High. However, the long-term characterization of these findings remains uncertain, and data for certain groups, such as children under the age of 12 years, remain insufficient.


Evidence for Use in Tinea Infections (Ringworm, Jock Itch, and Athlete’s Foot)

Dermoket was studied for conditions involving periods of heightened symptoms, such as the various forms of tinea. Research examined the use of the topical cream in Adults through Clinical Studies and general Efficacy Trials. These studies explored outcomes related to physical discomfort, particularly looking at the resolution of skin lesions and the rate of fungal eradication (mycological cure). Follow-up durations were often limited, meaning there is less information available to track potential re-infection or recurrence rates after the study period ends. The evidence base for this indication is broadly categorized as Moderate.


Evidence for Use in Pityriasis Versicolor

RCTs and other Clinical Studies focusing on immunocompetent Adults were conducted for conditions such as Pityriasis Versicolor. Studies monitored how physical discomfort and fungal presence evolved during the study period, sometimes following very brief application schedules. This evidence provides insight into symptom patterns over defined time intervals. The structural evidence base for this indication is assigned the category High.


What Is Still Uncertain About Dermoket Research

The research landscape highlights what is known and what is still uncertain. Sample sizes were modest in some trials, and evidence quality varies across studies. Comparative evidence against other treatments is limited, and data for certain patient groups, such as children under 12 or those with comorbidity-defined groups, remain insufficient. Long-term effects are not fully established, as follow-up durations were limited.

Key Studies & References

  1. Ketoconazole - StatPearls [Internet] (for forms, administration, and basic pharmacological class)
  2. NIH MedlinePlus: Ketoconazole topical (for general approved uses and clinical situations)

Frequently Asked Questions (FAQ)

Common questions about Dermoket (FAQ)


Q: Is Dermoket designed to be used for a short time or long term?

A: Topical formulations of Dermoket are officially labeled for defined short treatment courses, often ranging from two to six weeks depending on the condition. However, official product information indicates that some topical forms, such as the shampoo, may be used intermittently or as needed for long-term control of certain chronic conditions.


Q: Can Dermoket affect my ability to drive or operate machinery?

A: Official safety information for the oral tablet formulation indicates that the medicine has the potential to cause side effects such as dizziness and drowsiness. For this reason, official guidance cautions against driving or operating heavy machinery until an individual is aware of their reaction to the medication.


Q: Is Dermoket commonly used by pediatric patients?

A: Regulatory assessments indicate that there is currently insufficient safety and efficacy data for making general recommendations or establishing dosing protocols for use in very young children, particularly infants and those under 12 years of age for the topical forms. Therefore, the use of Dermoket in these groups requires careful consideration due to the limited regulatory data.


Q: Why is Dermoket sometimes used with other specific treatments?

A: Topical Dermoket is sometimes described in official guidelines as being used in specific treatment regimens with other medicines. For example, it is described as being used in conjunction with a gradual withdrawal regimen of a topical corticosteroid to mitigate the potential for a rebound effect on the skin.


Q: Can the effectiveness of Dermoket be reduced by certain medicines?

A: Yes, official documents state that strong CYP3A4 inducers (a category of medication) can officially reduce the systemic plasma levels of the oral tablet. This reduction in the medicine's concentration in the body is noted as potentially diminishing its fungistatic effect, which is its ability to halt fungal growth.


Q: Is Dermoket effective for the underlying cause or just the symptoms of the condition?

A: Dermoket is described as having a fungistatic effect, which means its primary function is to inhibit the growth and multiplication of the fungal organisms (the underlying cause of the infection). By addressing the cause, the medication is intended to lead to the resolution of clinical signs and physical discomfort (the symptoms).


Q: How quickly do people usually notice an effect after starting Dermoket?

A: According to official product information, for certain topical conditions, symptoms are generally described as beginning to improve during the first 2 to 4 weeks of use. Topical cream application may show symptom improvement earlier, sometimes near the beginning of treatment.


Q: What are the most commonly reported or anticipated side effects of Dermoket?

A: The most frequently classified adverse reaction for the topical cream is an application site burning sensation. Other common local reactions documented in official sources include erythema (redness) and pruritus (itching) at the area of application.


Q: Are there any known interactions between Dermoket and common pain relievers?

A: Official interaction notes indicate caution is advised when the oral formulation is used alongside other medications, such as common pain relievers like acetaminophen. This risk is established in regulatory documents due to the potential for compounding the risk of liver toxicity with both types of medication.


Q: Is it necessary to avoid any specific types of food or drinks while using Dermoket?

A: For the oral tablet formulation, official safety warnings include a caution against the use of alcohol due to the increased risk of liver damage. Specific product warnings also caution against the consumption of grapefruit or grapefruit juice as they may increase the concentration of the medicine in the bloodstream.


Q: Are the effects of Dermoket permanent, or do they stop when the medicine is discontinued?

A: Official information notes that there is a chance of recurrence of the original fungal infection after the treatment course is completed. This indicates that the medicine's effect is fungistatic and related to the duration of treatment, rather than offering a permanent effect after discontinuation.


Q: What is the typical time frame before a follow-up visit is recommended after starting Dermoket?

A: Official guidance mandates that laboratory monitoring is required, specifically that serum ALT (a key liver enzyme) should be monitored weekly for the entire duration of the oral treatment course.


Q: Can Dermoket be taken alongside vitamin supplements or herbal remedies?

A: Official product information suggests individuals inform their healthcare provider about all substances they are using. This includes all vitamin/mineral supplements and herbal products, as they may potentially interact with or be impacted by the oral medicine.


Q: Are there different brand names that contain the same active ingredient as Dermoket?

A: Yes, the active ingredient in Dermoket, which is Ketoconazole, is a widely known antifungal substance. Because of this, it is available globally under various other commercial trade names.


Q: Is it possible to develop a tolerance to Dermoket over time?

A: Research has been conducted to examine the potential development of tolerance and resistance in the fungal pathogens targeted by the medicine. This is a physiological mechanism that could potentially impact the medicine's long-term effectiveness at halting fungal growth.


Q: What are the serious but less common side effects associated with Dermoket?

A: The oral formulation carries serious regulatory warnings regarding the potential for severe hepatotoxicity (liver damage) and effects on heart rhythm (QT prolongation). For topical use, serious but less common reactions include immediate hypersensitivity events like angioedema (swelling) and urticaria (hives).


Q: Does Dermoket have different approved uses in children compared to adults?

A: Regulatory documents confirm that no pediatric-specific indications are listed for the topical formulations. This means that where use has been established, the approved uses for children are the same as those for adults.


Q: Can I use alcohol while taking Dermoket?

A: For the oral tablet formulation, official safety information includes a strong caution against the use of alcohol. This is due to the potential to significantly increase the already present risk of liver damage and the possibility of triggering unpleasant physical reactions.


Q: How long after discontinuing Dermoket does the medicine stay in the body?

A: The elimination of the oral formulation from the body is described in pharmacological literature as being biphasic, meaning it clears in two distinct phases. The primary route by which the body excretes the substance is through the bile duct.


Q: Is Dermoket approved for use in all countries?

A: The regulatory status of the oral formulation is not uniform globally. In some regions, such as the European Union and Australia, the oral product was withdrawn. In other regions, like the U.S. and Canada, it was placed under strict use restrictions due to safety concerns.


Q: Are there any specific laboratory tests that might be needed while using Dermoket?

A: For the oral tablet formulation, official guidance requires specific baseline laboratory tests (including liver function markers) before beginning the medicine. Additionally, regulatory guidance mandates weekly monitoring of serum ALT for the entire duration of the treatment course.


Q: Are there long-term safety studies available for Dermoket?

A: Yes, studies have been published that examine the long-term safety profile of Dermoket. For instance, there is documented research that followed the use of the ketoconazole foam formulation over a 12-month period in patients with seborrheic dermatitis.

How should Dermoket be stored and disposed of?

The storage and disposal of Ketoconazole topical (Dermoket) are defined by official regulatory guidelines to maintain its stability and ensure household safety.

Mandatory Storage Conditions

Storage Requirement Official Condition
Temperature Store at 20^circ to 25 C (68^circ to 77 F) (USP Controlled Room Temperature).
Protection Do not freeze. The product must be kept out of the reach of children.

Disposal Requirements

Official labeling for the cream often states no special requirements for disposal beyond routine waste handling. Unused or expired medication should be disposed of according to local regulations or by following FDA guidelines for non-hazardous household waste.

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

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