Oxistat

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Oxistat

Medically reviewed

Laura Arias

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 Oxistat

Quick Facts

Property Description
Active ingredient Oxiconazole nitrate
Form Topical cream and topical lotion
Pharmacological class Antifungal agent (Imidazole derivative)
General purpose Elimination of superficial fungal pathogens
Origin Synthetic chemical entity

What is Oxistat? Defining the Antifungal Agent

Oxistat is the trade name for a synthetic, single-ingredient, prescription-only medication containing the active compound Oxiconazole nitrate. This key ingredient is classified as an azole/imidazole derivative, a group of compounds utilized for targeting fungal infections. As a broad-spectrum antimycotic drug, it is intended to combat various superficial fungal pathogens, including dermatophytes and yeasts.

The medicine is composed of the Oxiconazole nitrate active ingredient, formulated for topical application to the skin. Oxistat is supplied in two principal dosage forms: a topical cream and a topical lotion. These distinct forms offer flexibility for application; the cream provides an emollient base for a thicker consistency, while the lotion utilizes a lighter aqueous base, ensuring the therapeutic action is concentrated locally at the site of infection.

General Purpose and Mechanism Summary

The general therapeutic purpose of Oxistat is to eliminate the underlying cause of superficial fungal infections through its specific mechanism of action. Oxiconazole performs this by interfering with the synthesis of ergosterol, a component required for fungal cell membrane integrity. This focused action is designed to produce a dual effect: the drug exhibits fungistatic activity by inhibiting the pathogen's growth and also demonstrates fungicidal activity by destroying existing fungal cells. This mechanism is central to the drug's role in clearing fungal presence and supporting the restoration of healthy tissue.

Regulatory References

  1. OXISTAT- oxiconazole nitrate lotion - DailyMed
  2. Oxiconazole Nitrate Mechanism - DailyMed

What side effects are possible with Oxistat?

Possible Side Effects and Safety Information

The safety profile for Oxistat (oxiconazole nitrate) is primarily defined by local reactions occurring at the application site, as detailed in official regulatory documents. Based on clinical trial data, adverse reactions are officially classified by frequency.

Frequency-Classified Adverse Reactions

The most frequent adverse events are typically localized and confined to the area of application. These effects are organized by system-organ class in regulatory texts, largely falling under Skin and subcutaneous tissue disorders and General disorders and administration site conditions.

Classification Examples of Documented Adverse Reactions
Common (1–10%) Pruritus (itching), Burning
Uncommon (<1%) Irritation, Allergic contact dermatitis, Folliculitis, Erythema, Papules, Rash, Stinging, Scaling, Tingling, Pain, Dyshidrotic eczema

Regulatory Safety Considerations

The most significant safety limitation is the Contraindication for use in individuals who have demonstrated a known hypersensitivity to oxiconazole nitrate or any of the product's components. Should signs of sensitivity or chemical irritation, such as severe burning or blistering, appear, the medication must be discontinued, according to regulatory guidelines.

Safety statements also address specific patient populations. For pregnancy, Oxistat is classified as Category B; use is only permitted when clearly needed. For lactation, caution is advised as the drug is known to be excreted in human milk. Geriatric patients are noted to have experienced adverse reactions similar to younger adults, and no specific dosage adjustment is warranted for this group. Furthermore, regulatory documents specify that this product is strictly for external dermal use only and not for oral, ophthalmic, or intravaginal application.

Overdose and Emergency Response

Overdose and when to seek help

The information regarding overdose for Oxistat (Oxiconazole nitrate) is based strictly on documentation from regulatory authorities, which note the low risk of systemic complications due to the topical formulation.

Overdose Scope

Feature Official Regulatory Statement
Documented overdose presentations Overdose via topical application is expected to result in minimal systemic clinical manifestations due to the compound’s limited percutaneous absorption. The primary concern is accidental oral ingestion of the cream or lotion, which may cause symptoms of gastrointestinal irritation, including nausea, vomiting, and epigastric distress.
Emergency-response statements Immediate medical attention must be sought, and a Poison Control Center or Emergency Department must be contacted immediately if the product is accidentally swallowed.
Antidote availability The regulatory information states that no specific antidote is known for Oxiconazole nitrate overdose.

Supportive Care

Treatment for accidental ingestion or suspected overdose is limited to symptomatic and general supportive measures. Due to the formulation, the risk of serious systemic toxicity is considered low, but hospital monitoring may be required until clinical signs of gastrointestinal distress resolve, particularly following ingestion.

Therapeutic Uses of Oxistat

What Oxistat Treats: Main Uses and Benefits

Oxistat is used in cases where symptomatic support is needed for managing conditions related to specific fungal skin infections. The medication is considered relevant for easing symptoms related to inflammatory or irritative states and is primarily used to help with the elimination of fungal pathogens in conditions such as Tinea pedis, Tinea cruris, Tinea corporis, and Tinea (Pityriasis) versicolor.

The primary therapeutic focus is aligned with addressing the presence of the fungal pathogen in various infection contexts. Oxistat helps address symptom clusters that may become intense or disruptive, such as persistent itching, skin redness, and bothersome scaling or flaking. This provides support that helps ease the overall symptom burden, contributing to the management of physical discomfort during periods of heightened symptoms. The medication may assist with maintaining a sense of stability by supporting general well-being and is relevant for easing visible manifestations like rashes and abnormal pigmentation.

Quick Fact: Relief for Inflammatory Symptoms Description
Symptom focus Itching, redness, scaling, flaking
Condition relevance Tinea pedis, Tinea cruris, Tinea corporis, Tinea versicolor
Core benefit Contributes to easing the overall symptom load and supports the process of easing visible manifestations

Regulatory References

  1. Official DailyMed Label

Eligibility and Restrictions for Use

Who can and cannot use Oxistat?

Eligibility for using Oxistat is defined by government regulatory documents based on patient status, age, and known sensitivities.

Classification Status Specific Rule (Regulatory Basis)
Contraindication Must Not Use Individuals with a known hypersensitivity to Oxiconazole nitrate or any component of the formulation.
Established Use Allowed Adult patients for indicated topical infections. Geriatric patients (no dosage adjustment is warranted).
Conditional Use Restricted Pregnant women: Use only if clearly needed due to the absence of adequate, controlled studies in humans.
Cautionary Use Restricted Nursing Mothers: Caution must be exercised because Oxiconazole is excreted in human milk.

Age-Related Eligibility Safety and effectiveness are established for the Cream formulation in pediatric patients. However, the Lotion formulation is officially designated as use not established in the pediatric population. No specific restrictions or limitations are documented for patients with renal or hepatic impairment, aligning with the drug's minimal systemic absorption.

The regulatory documents define non-eligibility primarily through the absolute contraindication of hypersensitivity, while applying specific conditional restrictions to reproductive populations and distinct eligibility rules based on the product’s formulation for children.

What should I know about interactions with other medicines?

The official interaction profile for Oxistat (oxiconazole nitrate) is primarily defined by the regulatory status of its systemic interaction studies. Consistent with its topical application and minimal systemic absorption, the official prescribing information from government authorities, such as the U.S. Food and Drug Administration, explicitly states that potential drug interactions between Oxistat and other medicinal products have not been systematically evaluated.

This regulatory statement dictates the entire structure of the interaction profile. Consequently, the official label does not formally document any specific pharmacokinetic or pharmacodynamic interaction mechanisms. There are no officially listed medicinal products, food items, alcohol, or supplements that are known to interfere with the metabolism or exposure of oxiconazole nitrate.

Due to the absence of documented systemic interaction data, the official documentation does not classify any specific drug combinations as formally contraindicated based on interaction risk. Similarly, the regulatory documents do not provide any mandatory timing-based administration rules requiring separation from other medications. The section is structured to convey that the official data is limited to the statement on the lack of systematic evaluation, confirming the profile aligns with the drug's topical administration route.

Mechanism of Action

How Oxistat Works

Oxistat's action is defined by a highly selective process that disrupts the core structures essential for fungal survival.

Targeting the Fungal Cell's Building Blocks

Oxistat acts by inhibiting the enzyme Lanosterol 14-alpha demethylase (CYP51) within the fungal cell. This enzyme is required for the biosynthesis of ergosterol, the primary sterol component of the fungal cell membrane. The inhibition of this process operates within the ergosterol biosynthesis pathway.

Initiating Structural Collapse

The blockade of ergosterol production causes abnormal, methylated sterol precursors to accumulate within the fungal cell, compromising the cell membrane structure. This damage leads to the loss of the membrane's barrier function, resulting in the leakage of the fungal cell's internal contents. This process achieves both the cessation of fungal growth and the destruction of the fungal cell.

Dosage and Administration Information

Oxistat (oxiconazole nitrate) is formulated for topical administration, utilizing either the 1% cream or 1% lotion formulation. The medicine is designed for external dermal use and is not for oral, ophthalmic, or intravaginal application. The fundamental principle of use involves applying a sufficient amount of the product to completely cover the fungal lesion and the skin immediately surrounding it.

The required frequency and duration of application vary based on the specific condition being addressed. For Tinea corporis and Tinea cruris, the preparation is typically applied once to twice daily for a period of two weeks. Treatment for Tinea pedis (athlete's foot) also utilizes a once to twice daily regimen, but the course is extended to one month (four weeks). Conversely, Tinea (Pityriasis) versicolor involves a once daily application for two weeks. In all instances, administration is intended to be continued for the full duration specified, regardless of symptomatic changes.

Several procedural constraints define the application of Oxistat. Users wash their hands after application and avoid contact with mucous membranes, including the eyes, nose, and mouth. Additionally, the labeling advises against covering the treatment area with occlusive or airtight dressings unless advised to do so. The drug is indicated for use in pediatric patients for the approved conditions, though the conditions themselves are noted to rarely occur in children under the age of 12.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Oxistat

Evidence Structure for Tinea Pedis (Athlete's Foot)

The research base for Oxistat (oxiconazole nitrate) was established in studies that included patients with Tinea pedis and primarily consists of randomized, double-blind trials. This research involved studies comparing the active ingredient to a non-active base (placebo or vehicle). This methodology was studied for assessing symptom patterns and fungal status.

Researchers primarily examined two types of outcomes: mycological assessment (laboratory tests for the absence of the fungus, such as KOH preparation and culture) and the measured change in clinical signs and symptoms (such as redness, peeling, cracking, and itching) at specific time points. Studies monitored these combined clinical and laboratory outcomes following a defined course of treatment.

What remains important to note is that the research focused mainly on short-term outcomes. Follow-up durations were typically limited to about two weeks after the treatment period ended. Long-term durability of the observed mycological status is not fully established beyond this immediate follow-up. Also, although there are two different formulations (cream and lotion), comparative evidence is lacking from dedicated trials examining outcomes between these two specific forms.


Evidence for Tinea Cruris (Jock Itch) and Tinea Corporis (Ringworm)

Clinical trials were conducted for these two skin infections (Tinea cruris and Tinea corporis), which generally used shorter treatment courses, often lasting two to four weeks. These studies also monitored the two main axes of outcomes: laboratory clearance of the fungal pathogen and the resolution of physical signs, such as scaling and inflammation.

Studies explored the response over defined time intervals and found that the outcomes monitored were short-term. The findings contribute to the broader evidence landscape for topical antifungal agents.

One limitation noted in the research is that data for these specific conditions may be aggregated with studies of Tinea pedis in large scientific reviews. Dedicated, stand-alone research focusing solely on Tinea cruris and Tinea corporis is less frequently detailed in public summaries, and there is limited information for long-term outcomes to assess the risk of recurrence after treatment.


Evidence for Tinea (Pityriasis) Versicolor

Oxistat was studied in research exploring how symptoms change over time in Tinea (Pityriasis) versicolor, an infection caused by a different type of fungus. Studies conducted during periods of increased symptom activity examined short-term symptom changes after a treatment course typically lasting two weeks. Researchers measured the fungal presence using a KOH test and monitored clinical outcomes, including the resolution of scaling and changes in the discolored patches of skin.

Findings indicate that studies reported patterns of mycological status change in some observed populations. However, evidence quality varies across studies related to this specific condition. A key observation from the research is that while studies report how symptoms evolved in the observed populations during the short treatment period, the normalization of skin color was observed to take significantly longer (sometimes months) than the short-term follow-up. The short-term follow-up durations used in the trials do not monitor the entire period required for the complete normalization of skin pigmentation.


Long-Term Evidence and Follow-up Durations

Research has explored outcomes over defined time intervals, with the majority of core clinical trials for Tinea infections focusing on short-term changes and episodic or acute outcomes. The primary treatment periods generally lasted up to four weeks, with a subsequent follow-up visit scheduled soon after treatment completion to confirm the initial result.

There is limited information for long-term outcomes regarding what happens months or years after the medicine is stopped. Long-term effects are not fully established, as there is limited information for outcomes reflecting the risk of infection returning (relapse or recurrence) over periods extending past three to six months. This means data are still emerging when it comes to evaluating long-term follow-up over longer timeframes.


Studies in Specific Patient Populations

The clinical trials primarily included adult patients. While there are some data for other populations, they are often insufficient for a clear, separate analysis.

  • Older Adults: The total sample size of older adults (aged 60 and over) included in the original clinical research was modest. Regulatory reviews have indicated that the sample size was modest for this group, meaning a dedicated subgroup analysis of outcomes is uncertain. This means findings describe group patterns related to the general adult population, and data for certain groups remain insufficient for specific outcomes in the geriatric age range.
  • Children: Oxistat cream was studied in pediatric patients for all four approved indications. However, the evidence is contextualized by the fact that these fungal infections are observed less frequently in children under the age of 12.

Key Evidence Gaps and Areas of Uncertainty

Research highlights what is known, but also where certainty remains low. Comparative evidence is lacking between the Oxistat cream and lotion formulations in dedicated head-to-head comparison trials that directly examined outcomes.

Also, comparative evidence is lacking, as research examined the medicine against a non-active vehicle and not consistently against other currently available active antifungal treatments. As noted, there is limited information for long-term outcomes, meaning that results apply only to the populations studied and the short-term treatment and follow-up durations. Subgroup findings for older adults are also uncertain due to limited sample sizes.

Key Studies & References

  1. NCT01519752 | A Therapeutic Equivalence Study of Two Oxiconazole Nitrate Topical Cream Treatments for Patients With Tinea Pedis | ClinicalTrials.gov (Example trial methodology and outcomes)
  2. OXICONAZOLE NITRATE CREAM, 1% Monograph for Professionals (Detailing Tinea Versicolor outcome monitoring and time to skin normalization)

Frequently Asked Questions (FAQ)

Common questions about Oxistat (FAQ)


Q: How quickly can someone typically expect to see improvement after starting Oxistat?

Official patient information indicates that symptomatic improvement is generally expected within the treatment course. If the condition shows no improvement after two to four weeks, regulatory documents recommend consulting a healthcare provider. The full duration of therapy must be completed regardless of when symptoms clear.


Q: Why must Oxistat be used for the full course of treatment, even if symptoms clear up?

Regulatory guidelines for Oxistat emphasize that administration is recommended to be continued for the entire duration specified by the prescribing professional. Completing the full course of therapy is recommended to reduce the possibility that the fungal infection will return or recur after the medication is stopped.


Q: What if I accidentally get Oxistat cream or lotion in my eye or mouth?

Oxistat is strictly designated for topical use on the skin only. It must not be applied to the eyes, mouth, nose, or other mucous membranes. In the event of accidental contact with these areas, official documents recommend consulting a healthcare provider for guidance.


Q: Why is Oxistat sometimes applied once a day and sometimes twice a day?

The required frequency of application is determined by the specific type of fungal infection being treated, as outlined in the official prescribing information. The frequency indicated for Tinea (Pityriasis) versicolor differs from the frequency indicated for Tinea pedis, Tinea cruris, or Tinea corporis.


Q: Is Oxistat a controlled substance, or does it require a prescription?

Oxistat is classified as a prescription-only medication, which means its use requires authorization from a healthcare professional. According to regulatory scheduling, the drug is not categorized as a controlled substance.


Q: Why should the treated skin area not be covered or bandaged?

Official patient instructions advise against covering the area where Oxistat is applied with occlusive or airtight dressings, such as wraps or bandages. This caution applies unless a healthcare provider specifically advises otherwise.


Q: What should a patient know about the potential for fungal infections to recur?

Official documents note that recurrence, meaning the return of the infection, is a possibility with fungal skin conditions. Regulatory documents focus on completing the full, prescribed course of treatment to reduce this possibility.


Q: Why do official documents state Oxistat is for 'topical dermatologic use only' ?

The restriction that Oxistat is for 'topical dermatologic use only' is a strict regulatory constraint found in official documents. This means the medication is intended solely for external application to the skin and is not intended for oral, ophthalmic (eye), or intravaginal application.


Q: Does using Oxistat require any changes to diet or lifestyle?

Official regulatory data states that drug interactions with food, alcohol, or supplements have not been systematically studied. However, such supportive advice may include general hygiene practices that help complement the topical treatment.


Q: Is tinea versicolor contagious, or why does it sometimes come back after treatment?

Tinea versicolor is caused by the yeast Malassezia furfur, which is naturally found on the skin. Since this organism is part of the skin's normal flora, the infection is generally not considered contagious in the same way as other skin infections. The full treatment duration is intended to help reduce the possibility of the condition returning once the medication is stopped.


Q: What level of absorption into the bloodstream is described for topical Oxistat?

Studies have examined the level of systemic absorption into the bloodstream following topical application. Official pharmacokinetic data indicates that the amount absorbed is very low, with less than 0.3% of the applied dose of the cream formulation recovered in the urine of subjects.


Q: Does Oxistat prevent future fungal infections after the course is completed?

The general purpose of Oxistat is defined as the elimination of existing fungal pathogens. Completing the full treatment course is intended to reduce the chance that the specific infection being treated will return. Official regulatory information does not contain claims that the medication prevents the occurrence of future or unrelated fungal infections.


Q: Does Oxistat cause dryness or peeling on the treated skin?

Official documents list scaling and fissure (cracks in the skin) as adverse reactions that have been reported in clinical trials. These effects are classified as uncommon.


Q: Are there any specific cleaning or drying steps to follow before applying Oxistat?

Official instructions indicate that the affected skin area should be cleaned and thoroughly dried prior to application of the medication.


Q: Why does the cream form of Oxistat treat tinea versicolor, but the lotion form does not?

According to official regulatory documents, Oxistat Cream is indicated for the topical treatment of Tinea (Pityriasis) versicolor. However, the label for the Oxistat Lotion formulation does not include this infection as one of its approved indications.


Q: Can Oxistat be used on areas with broken or irritated skin?

The official safety information specifies that if signs of sensitivity or chemical irritation, such as severe burning or blistering, appear after application, the medication should be discontinued. There is no specific regulatory guidance provided on applying the medication to pre-existing broken skin.


Q: How long does Oxistat stay in the body after the last dose?

Studies on how the drug moves through the body (pharmacokinetics) indicate that systemic absorption is minimal. Less than 0.3% of the amount applied is recovered in the urine up to five days following application, which suggests rapid clearance from the bloodstream.


Q: Does the lotion formulation of Oxistat have specific instructions, like needing to be shaken?

Patient information suggests shaking the lotion bottle well before each use. This is a common practice for liquid topical medications to ensure the active ingredients are evenly distributed.


Q: Does the cream or lotion contain any common allergens, like certain preservatives?

Yes, the official regulatory documents list all inactive ingredients, or excipients, used to create the formulation base. These include the preservative benzoic acid, along with cetyl alcohol, stearyl alcohol, and propylene glycol.


Q: What are the signs that a fungal infection is worsening despite using Oxistat?

Official patient information recommends consulting a healthcare provider if the treated condition appears to worsen. Signs to look for include increased irritation, burning, blistering, swelling, or oozing, or if there is no clinical improvement after the expected treatment period.


Q: Does Oxistat work on nail fungus infections?

Oxistat is indicated for the topical treatment of specific skin infections (Tinea pedis, Tinea cruris, Tinea corporis, and Tinea (Pityriasis) versicolor for the cream only). It is not indicated or approved for use in the treatment of nail fungal infections.


Q: What is the role of the ingredients besides oxiconazole nitrate in the cream or lotion?

In addition to the active ingredient, oxiconazole nitrate, the formulations contain various inactive ingredients (excipients). These ingredients serve specific roles, such as creating the cream or lotion base and texture, or acting as a preservative to ensure the medication remains stable.

How should Oxistat be stored and disposed of?

How to Store and Dispose of Oxistat?

Official regulatory information outlines specific temperature requirements necessary to maintain the stability of Oxistat (oxiconazole nitrate) formulations.

Official Storage Requirements

Formulation Required Temperature Range
Oxistat Cream Store between 15 C and 30 C (59 F and 86 F)
Oxistat Lotion Store at 20 C to 25 C (68 F to 77 F)

It is a mandatory storage requirement, stated in the official labeling, to keep this and all medications out of the reach of children.

Disposal Guidance

The product label does not contain drug-specific instructions for disposal or classify Oxistat as a hazardous waste. The disposal of unused or expired Oxistat should therefore follow general governmental guidelines for non-hazardous prescription medicines.

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

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