Micosten

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Medically reviewed

Marina Burgos

Last updated on 10/01/2026

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Micosten

Property Description
Active ingredient Clotrimazole
Primary Forms Cream, Solution, Vaginal Tablet (Pessary)
Pharmacological Class Azole Antifungal Agent
General Purpose Control of Superficial Fungal Infections
Origin Synthetic Imidazole Derivative

Micosten: An Azole Antifungal and Imidazole Derivative

Micosten is a synthetic pharmaceutical preparation defined by its single active ingredient, Clotrimazole (INN), which belongs to the class of imidazole derivatives. It is structurally classified as an azole antifungal agent, a designation that defines its fundamental role: the targeted control of superficial fungal and yeast infections. This classification defines the drug as a recognized agent in managing mycotic conditions. Clotrimazole serves as a cornerstone therapy for many superficial mycoses, with broad efficacy against yeasts, molds, and dermatophytes. The active substance is utilized for localized antifungal treatment, often applied in scenarios such as dermal candidiasis.


Active Ingredient and Available Topical Forms

The core therapeutic component of Micosten is Clotrimazole, and the product is typically a single-component medication formulated for localized application. The medicine is supplied in several topical and transmucosal forms, which commonly include a cream, solution, lotion, ointment, and a specialized vaginal tablet, also known as a pessary. This range of delivery formats allows flexibility in treating distinct areas, from dry skin to mucosal surfaces. The topical or intravaginal delivery of the active substance is facilitated by various formulation bases, such as liquid vehicles or cream bases, which ensure an effective concentration at the site of infection. The medicine is utilized for its reliability in meeting health care needs through these established forms.


General Therapeutic Role and Mechanism Principle

Micosten’s general therapeutic role is to offer broad-spectrum antimycotic control against a variety of fungal pathogens. Clotrimazole works by the fundamental principle of disrupting the fungal cell membrane, which is vital for the organism's viability. This action is achieved by interfering with the fungal cell's ability to produce and integrate ergosterol, the key sterol necessary for maintaining membrane structure and function. This targeted mechanism establishes the general benefit of the medicine: the containment and clearance of localized fungal proliferation.

Regulatory References

  1. FDA-Approved Indications
  2. Clotrimazole Topical: MedlinePlus Drug Information
  3. Clotrimazole: Essential Medicine Status for Vulvovaginal Candidosis
  4. Clotrimazole - StatPearls - Mechanism of Action

What side effects are possible with Micosten?

Micosten's (Clotrimazole) official safety profile is predominantly characterized by adverse reactions occurring at the site of application, reflecting its localized use. The documented effects are chiefly categorized within Skin and Subcutaneous Tissue Disorders and General Disorders and Administration Site Conditions.

Documented Adverse Reactions

The most frequently observed adverse reactions are categorized as Common in regulatory documents and include signs of local irritation such as burning, stinging, pruritus (itching), and erythema (redness). Other documented local reactions associated with the product include blistering, peeling, edema (swelling), and urticaria (hives).

While rare for topical use, the risk of a severe allergic reaction (anaphylaxis) is officially documented under Immune System Disorders. These reactions may involve symptoms such as swelling of the lips, mouth, or throat, or difficulty breathing, and represent the most serious documented safety concern.

Population and Safety Limitations

The regulatory profile addresses specific use contexts. Contraindication is absolute for individuals with a known hypersensitivity to clotrimazole or any other component in the formulation. For use during pregnancy and lactation, systemic absorption is minimal, though the use must be evaluated clinically.

Critically, for intravaginal forms, official labeling includes a safety note that components may cause damage to contraceptive devices made of latex or rubber, potentially leading to failure. Furthermore, the product is designated as ineffective for the treatment of fungal infections of the nails or the scalp.

Overdose and Emergency Response

Overdose and when to seek help

The official profile for Micosten (Clotrimazole) indicates a low risk of acute intoxication due to the medicine's primary use as a topical and intravaginal agent. Regulatory labeling confirms this low risk, stating that the minimal systemic absorption of the active ingredient makes acute systemic toxicity unlikely following a single topical overdose. Overdose scenarios detailed in regulatory labeling are primarily constrained to cases of accidental oral ingestion.


Documented Manifestations and Management

Overdose symptoms, if they occur after accidental oral ingestion, are documented to involve the gastrointestinal and central nervous systems. These manifestations may include dizziness, nausea, and vomiting. Regulatory documents explicitly state that no specific antidote is known for Clotrimazole overdose. Management of such a scenario is largely symptomatic and supportive. Procedures like gastric lavage are rarely required and should only be considered if clinical symptoms become apparent following ingestion, and only once the airway is protected adequately.


When to Seek Urgent Medical Help

In the event of accidental ingestion of Micosten, official guidance mandates that individuals seek professional assistance or contact a Poison Control Center right away. Immediate medical attention is required. If the affected person has collapsed, is not breathing, or exhibits serious life-threatening symptoms, the instruction is to call local emergency services. Regulatory information does not document specific population-based (pediatric or geriatric) overdose considerations regarding increased severity.

Therapeutic Uses of Micosten

Quick Facts

  • Athlete's Foot: Used for the management of tinea pedis.
  • Jock Itch: Indicated for the management of tinea cruris.
  • Ringworm: Utilized for the management of tinea corporis.
  • Yeast Infections: Used for the local treatment of vulvovaginal candidiasis.

Micosten is an established treatment for a variety of common fungal infections affecting the skin and mucous membranes. It is approved for the management of dermatophytosis, including common conditions such as athlete’s foot (tinea pedis), jock itch (tinea cruris), and ringworm (tinea corporis).

The medication is also indicated for the local treatment of superficial skin infections caused by yeast, specifically Candida albicans. This includes its use for the management of vulvovaginal candidiasis, a common form of yeast infection, as well as oropharyngeal candidiasis (oral thrush).

Micosten may also be utilized to address mycoses that are secondarily infected with certain Gram-positive bacteria, leveraging its antibacterial properties.

Regulatory References

  1. NIH MedlinePlus guidance

Eligibility and Restrictions for Use

Who can and cannot use Micosten?

The eligibility for Micosten (Clotrimazole) is defined by official regulatory documents that establish strict rules on who is permitted or restricted from using the medicine.


Absolute Contraindications

Micosten must not be used by any individual who has a known hypersensitivity to the active ingredient, Clotrimazole, or to any other component of the specific preparation.

Age-Related Eligibility

The topical cream or solution is established for use in pediatric patients for superficial skin infections. In contrast, the vaginal dosage forms (cream or tablet) are not recommended for the pediatric population, specifically those under 16 years of age.

Pregnancy and Lactation Status

As a precautionary measure, use is not recommended during the first trimester of pregnancy. However, it may be used in the second and third trimesters, and during lactation, often requiring medical supervision. Pregnant patients using the vaginal tablet must not use the applicator.

Conditional Use and Restrictions

The medicine is not effective for the treatment of onychomycosis (fungal nail infections). Furthermore, patients over 60 years (for vaginal forms) or those with a history of recurrent infections or sexually transmitted disease exposure are required to seek medical advice before initiating use.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official regulatory profile for Micosten is structured around two categories of interaction: systemic metabolic effects with certain oral drugs and local integrity restrictions with non-medicinal products.

Systemic Pharmacokinetic Interactions (Use with Caution)

The vaginal formulation of this medicine may be associated with pharmacokinetic interactions due to the potential for minimal systemic absorption. This small amount of active ingredient has the capacity to cause CYP3A4 inhibition.

Co-administration with oral immunosuppressants, specifically Tacrolimus and Sirolimus, may result in increased plasma levels of these agents. Regulatory documentation classifies this as a use-with-caution interaction, mandating close patient monitoring and the determination of trough concentrations to detect any elevation.

Product and Co-Administration Restrictions

The second constraint concerns interaction with certain local substances. Components in the vaginal product formulations may cause damage to the latex material used in contraceptive devices such as condoms and diaphragms, officially resulting in a reduction of their efficacy. Due to this substance integrity issue, alternative contraception methods are required for at least five days after the medicine’s use is complete. Furthermore, the use of other intravaginal products, including tampons, douches, and spermicides, must be avoided throughout the treatment period. No interactions with food, alcohol, or herbal products are documented for the topical or vaginal route.

Mechanism of Action

Micosten (Clotrimazole) modulates fungal cellular function through the disruption of key metabolic processes involving the synthesis of sterols. The drug’s primary mechanism is the inhibition of lanosterol 14-alpha demethylase (CYP51), a cytochrome P450 enzyme within the fungal ergosterol pathway. By arresting this specific enzymatic step, Clotrimazole blocks the biosynthesis of ergosterol, the primary sterol component required to build and maintain the structure of the fungal plasma membrane. The resulting failure to synthesize ergosterol, combined with the accumulation of toxic precursor sterols, critically compromises the fungal cell membrane's structure and permeability. This leads to the uncontrolled leakage of essential intracellular components (like ions and macromolecules) and induces the cessation of fungal growth (fungistasis) or cellular death (fungicide). This fungicidal efficacy is concentration-dependent; the mechanism is subject to limitations such as fungal resistance, wherein genetic changes or upregulated efflux pumps can reduce the drug’s effective concentration at the enzyme target.

Dosage and Administration Information

How to Use Micosten

Micosten, which contains the active substance Clotrimazole, is administered through specific routes and fixed-duration regimens. Adherence to these protocols is important for proper use, as the dosage and frequency are dependent on the formulation and administration site.


Administration Scope

Category Standard Instructions
Route of Administration Topical (Dermal); Intravaginal; Oral Transmucosal.
Dosing Schedule Topical: Apply a thin layer twice daily. Intravaginal: Once daily for 3 or 7 days, or a single 500 mg dose. Oral: One 10 mg lozenge.
Course Duration Topical: 2 to 4 consecutive weeks. Intravaginal: 3 to 7 consecutive days. Oral Transmucosal: Typically 14 consecutive days.
Age-Group Rules Topical use is similar to adults for children gt3 years of age; Intravaginal use for patients gt12 years of age.

Procedural Constraints

Specific instructions govern the application of each form. Topical use involves the affected area being washed and dried thoroughly prior to administration. The oral lozenge is intended to dissolve slowly in the mouth and is not to be chewed. Intravaginal application is typically performed at bedtime, and the full course of treatment is meant to be completed. Tampons, douches, and spermicides are not used during intravaginal treatment. If a dose is missed, it is typically applied or taken as soon as possible, unless the next dose is near, in which case the schedule resumes normally without doubling the quantity. The sequence of use is defined by these parameters to standardize the application of the medicine.

Recent Clinical Evidence

Micosten: Recent Clinical Evidence

Phase 3 Clinical Trials

Research has explored the effect of this drug on pain and swelling, with studies reporting changes in these measures. Studies investigated how the compound interacts with the body, including the potential for inhibition of a key enzyme. Researchers sought to evaluate the compound as a treatment option for symptoms.

Phase 3 trials reported that study participants experienced changes in symptom severity following administration.

Some research evaluated the drug in patients with mild-to-moderate symptoms, and its potential for long-term use was examined. Furthermore, a recent study reported that participants treated with the drug experienced differences in joint mobility measurements. Studies involving individuals with heart conditions were excluded from this review.


Pharmacokinetic Studies

Research explores how administration with food may impact absorption. In clinical studies, the drug was administered with food.

Trial data addressed the occurrence of specific side effects. The results were evaluated by researchers.


Further Research

A long-term observational study is currently underway to further evaluate the experience of patients over a five-year period. Initial findings suggest that participants reported their experience with symptoms. It is not yet clear whether these observed effects are maintained over the full duration of the study.

Key Studies & References

  1. Phase III Efficacy and Safety Study of Miconazole Oil for Otomycosis - ClinicalTrials.gov
  2. Short and Long-term Safety of Micafungin and Other Parenteral Antifungal Agents (MYCOS) - Observational Cohort Study

Frequently Asked Questions (FAQ)

Common questions about Micosten (FAQ)

Q: Is Micosten the same thing as a generic medicine, or is there a generic version available?

A: Micosten contains the active ingredient Clotrimazole. Clotrimazole is the non-proprietary, or generic, name for this antifungal agent. Drugs with established generic names are widely recognized and may be available from different manufacturers.

Q: How long does it typically take before I start noticing any improvement with Micosten?

A: Official patient information often indicates that improvement is generally noticed within the first three days when using the medicine for vaginal infections. Regulatory documents indicate that treatment durations for skin infections may range from two to four weeks, and lack of improvement within that period may prompt a re-evaluation by a healthcare provider.

Q: What happens if I stop taking Micosten before the full course is finished?

A: The full treatment duration is prescribed to ensure the infection is fully addressed. Discontinuing use prematurely may affect the intended therapeutic outcome and risk recurrence, according to product labeling, so completing the course is generally advised.

Q: Is a change in appetite or a rash a normal expected side effect of Micosten?

A: Local skin reactions, such as a rash (redness), blistering, or burning, are listed as common side effects for Micosten, according to official safety profiles. A change in appetite is not listed as a common or documented side effect for the low-absorption topical or vaginal forms.

Q: Does Micosten cause dizziness or affect my ability to drive?

A: Dizziness is mentioned as a possible sign of a rare, severe allergic reaction which requires immediate medical attention. Official patient information for the topical and vaginal forms generally indicates that Micosten is not expected to affect the ability to drive or operate machinery.

Q: Can Micosten affect the liver, and what are the signs of a liver-related issue?

A: The risk of liver-related effects is low for the topical and vaginal forms due to minimal absorption into the body. However, for the oral form (troche), official sources note that liver function may be an area for monitoring by a healthcare provider.

Q: Does Micosten interact with common over-the-counter pain relievers like ibuprofen or acetaminophen?

A: Official documentation for the topical and vaginal routes of Micosten does not report specific interactions with common over-the-counter pain relievers such as ibuprofen or acetaminophen.

Q: Can taking Micosten make me feel more tired or fatigued?

A: Unusual tiredness or weakness is not listed as a common adverse reaction for the single-ingredient topical form in official product labeling. If unusual fatigue is experienced, consulting a healthcare professional is appropriate.

Q: Does Micosten interact with birth control pills, and is backup contraception needed?

A: Regulatory documents confirm that components in the vaginal formulations can damage latex contraceptives like condoms and diaphragms, reducing their effectiveness. Official guidelines advise that an alternative method of contraception be used during treatment. However, official information does not document an interaction between Micosten and oral birth control pills.

Q: Is it generally safe for older adults or geriatric patients to take Micosten?

A: Topical use of the medicine is generally not restricted by age in official guidelines. However, regulatory documents note that patients over 60 years old (for vaginal forms) are generally advised to consult a healthcare provider prior to use.

Q: What kind of medical history or existing conditions (like kidney or heart problems) might make Micosten unsuitable?

A: The primary restriction is a known hypersensitivity to any ingredient in the product. Official guidelines note that patients with a history of recurrent infections are generally advised to consult a healthcare provider. Systemic issues like kidney or heart failure are generally not listed as contraindications for the low-absorption topical/vaginal forms.

Q: Is Micosten known to cause problems with the digestive system like diarrhea or stomach upset?

A: Official safety data lists lower stomach/pelvic pain as a possible side effect of the vaginal formulations. While the content does not typically list diarrhea as a common reaction, signs like nausea and vomiting may be mentioned among more serious side effects.

Q: Do I need to get blood tests done while taking Micosten for a long period?

A: For the low-absorption topical and vaginal forms used alone, routine blood work is generally not specified in regulatory labeling. Blood tests may only be required for monitoring when Micosten is used with certain immunosuppressant drugs, such as Tacrolimus or Sirolimus.

Q: Is there a risk of developing a new infection while taking Micosten, such as a yeast infection?

A: The drug is used to treat fungal infections, and official product labeling indicates that if a patient's condition worsens or if a secondary infection (a different infection) is suspected, consultation with a healthcare provider is appropriate.

Q: Are there any reported visual side effects associated with Micosten use?

A: Visual side effects are not commonly documented for the single-ingredient topical or vaginal product. Official safety information directs users to avoid contact with the eyes, and some regulatory resources note that changes in vision have been reported in the postmarketing experience of antifungal agents.

Q: Where can I find the official patient information leaflet for Micosten online?

A: The official patient information leaflet, sometimes called the Package Leaflet, is published on various national government drug websites. You can generally find this information by searching the labeling databases of regulatory bodies like the FDA (DailyMed) or the UK's MHRA.

Q: What are the general rules for what to do if I accidentally take two doses of Micosten too close together?

A: If a topical or vaginal form is over-applied, the area may become irritated or red. If a large amount of the medicine is accidentally swallowed, official safety guidance advises contacting a Poison Control Center or emergency services immediately.

Q: What is the process for reporting a possible side effect from Micosten to regulatory bodies?

A: Regulatory bodies strongly encourage patients to report possible adverse reactions or side effects. This is typically done through a national reporting system, such as the FDA’s MedWatch program in the United States or the Yellow Card Scheme in the United Kingdom.

How should Micosten be stored and disposed of?

Storage and Disposal Requirements

Micosten (Miconazole Nitrate) must be stored according to official regulatory guidelines to maintain its stability and effectiveness.

Requirement Official Instruction
Temperature Store at Controlled Room Temperature, typically 20 C to 25 C (68 F to 77 F). Avoid excessive heat and freezing.
Protection Keep the product in its original, tightly closed container, protected from moisture.
Child Safety Keep Micosten out of the reach of children. Contact a Poison Control Center immediately if the product is swallowed.
Disposal Dispose of expired or unused medicine following official FDA disposal guidelines. Do not flush the product down the toilet or pour it into a drain.
Handling Refer to the product's labeled expiration date. For powder sprays, avoid use near heat or flame.

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

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