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Opizole-B

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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.

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Overview of Opizole-B

Opizole-B is a synthetic combination product formulated as a topical cream or topical lotion for external application to the skin. This dual-action medication belongs to the Topical Corticosteroid and Antifungal Combination drug class, a strategy intended to address skin conditions where fungal infection and significant inflammation occur concurrently.

Property Description
Active Ingredients Betamethasone Dipropionate, Clotrimazol
Form Topical Cream, Topical Lotion
Pharmacological Class Topical Corticosteroid and Antifungal Combination
General Use Managing inflamed fungal skin conditions
Origin Synthetic

Opizole-B: Definition and Pharmacological Classification

Opizole-B is classified as a combination drug because its therapeutic effect is derived from the synergy of two distinct active ingredients, the anti-inflammatory Betamethasone Dipropionate and the antifungal Clotrimazol. This specific formulation is clinically recognized for its utility in treating inflammatory dermatophytosis, or ringworm, particularly when intense itching and redness are present. The Betamethasone component is a potent glucocorticoid, while Clotrimazol is an azole antifungal.


Composition and Topical Formulation Identity

The composition includes the potent corticosteroid Betamethasone Dipropionate and the antifungal agent Clotrimazol. Clotrimazol's mechanism involves disrupting the fungal cell membrane by inhibiting the synthesis of ergosterol. The product is typically presented as a Topical Cream or Topical Lotion, pharmaceutical preparations designed for external use only and often requiring a prescription due to the potency of the corticosteroid component. This design ensures that the concentrated anti-inflammatory and antifungal components are delivered directly to the affected epidermal layers.


General Therapeutic Purpose of the Dual-Action Medicine

The general purpose of Opizole-B is to achieve rapid symptomatic relief while simultaneously initiating fungal eradication. The anti-inflammatory action of the Betamethasone component quickly eases disruptive symptoms such as redness, intense itching, and swelling, which is a differentiating factor compared to antifungal-only products. Concurrently, the Clotrimazol component works to eliminate the underlying fungal pathogen, resulting in a comprehensive therapeutic effect aimed at resolving the full spectrum of inflamed fungal skin conditions.

Regulatory References

  1. NIH DailyMed: Clotrimazole
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What side effects are possible with Opizole-B?

Possible side effects and safety information

The safety profile of Opizole-B (Clotrimazole/Betamethasone Dipropionate combination) is based on adverse reactions and potential safety concerns documented in official government regulatory labels.

Common and Local Adverse Reactions

The most frequently listed reactions occur at the application site. According to regulatory documentation, Paraesthesia (abnormal skin sensation, such as tingling) is documented as Common (reported in 1.9% of patients in trials). Uncommon reactions include rash, edema, and secondary infection. Other documented local reactions associated with the ingredients include burning, stinging, itching (pruritus), irritation, and changes to the skin such as folliculitis and skin atrophy.

Systemic Safety Concerns and Serious Reactions

The primary serious safety concern is related to the systemic absorption of the potent corticosteroid component, Betamethasone Dipropionate. This absorption can lead to serious adverse reactions, including the suppression of the Hypothalamic-Pituitary-Adrenal (HPA) axis and, in some cases, manifestations of Cushing's syndrome. The likelihood of these systemic effects increases with prolonged use, extensive application to large body surface areas, or application under occlusive dressings.

Population-Specific Safety Statements

Official labels address specific safety considerations for patient groups. Pediatric patients (under 17 years of age) may exhibit greater susceptibility to systemic toxicity, including HPA axis suppression, due to their higher ratio of skin surface area to body mass. For this reason, use in younger populations and use in the treatment of diaper dermatitis are not recommended.

Regulatory Restrictions

Opizole-B is officially contraindicated in individuals with a history of hypersensitivity to any component of the preparation. Furthermore, the product is designated as not for ophthalmic use, as contact with the eyes should be avoided due to the documented risk of certain eye conditions associated with topical corticosteroid exposure.

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Overdose and Emergency Response

Overdose and when to seek help

The regulatory profile for Opizole-B (Clotrimazole and Betamethasone Dipropionate Topical Combination) primarily addresses the risk of systemic absorption of the potent corticosteroid component, Betamethasone Dipropionate, resulting from chronic overuse. Official labeling indicates that acute overdosage via topical application is unlikely to lead to a life-threatening situation.


Documented Overdose Manifestations

Chronic, excessive use or application to large surface areas may lead to systemic effects, including reversible Hypothalamic-Pituitary-Adrenal (HPA) axis suppression and clinical manifestations consistent with Cushing’s syndrome. Laboratory findings documented in regulatory sources include hyperglycemia and glucosuria. Upon cessation of overuse, signs of glucocorticosteroid insufficiency may be noted, which presents a serious risk.


Required Emergency Actions

The regulatory guidance mandates that patients should seek immediate medical attention if they experience symptoms of glucocorticosteroid insufficiency or if accidental ingestion of the topical product occurs. If HPA-axis suppression is documented, management involves attempting to withdraw the drug gradually or reduce the frequency of application. Supplemental systemic corticosteroids may be required for the management of insufficiency. Pediatric patients are officially noted to be more susceptible to systemic toxicity and require careful monitoring.

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Therapeutic Uses of Opizole-B

What Opizole-B Treats: Main Uses and Benefits

The therapeutic focus of Opizole-B is used to help manage fungal infections that have triggered a significant inflammatory skin reaction, supporting the management of the fungal infection while assisting with relief from acute symptoms. The combination is commonly used for symptomatic inflammatory tinea infections.


Targeted Symptomatic Relief

This medication is commonly used across conditions presenting with significant symptomatic discomfort, specifically fungal infections of the skin known as dermatophytosis (ringworm). It is applied across domains where additional symptomatic support is needed to manage Tinea Corporis (body), Tinea Cruris (jock itch), and Tinea Pedis (athlete's foot) when these conditions are marked by increased irritative processes and inflammation.

Opizole-B helps address symptom clusters that may become intense or disruptive, such as pronounced itching (pruritus), severe redness (erythema), and swelling at the site of infection. This supportive symptom management contributes to improved comfort during periods of heightened symptoms. The combination is relevant when symptoms interfere with routine activities, assisting with maintaining functional stability by easing the acute inflammatory distress.


Quick Fact: Support for Symptoms Related to Intense Pruritus Opizole-B is considered relevant for easing challenging symptoms, particularly when intense itching and localized inflammation are key factors interfering with daily functioning.

Regulatory References

  1. DailyMed Label for Clotrimazole and Betamethasone Dipropionate Cream
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Eligibility and Restrictions for Use

The eligibility for Opizole-B (Clotrimazole and Betamethasone Dipropionate Topical) is strictly defined by regulatory authorities and is determined by a patient’s age, pre-existing conditions, and known sensitivities.

Eligibility Scope

Populations for whom use is allowed (as stated in label):

  • Adults and adolescents who are 17 years of age and older.

Populations for whom use is not recommended (if applicable):

  • Pediatric patients under 17 years of age, as safety and efficacy have not been established, and due to the increased risk of systemic toxicity.
  • Patients with Diaper Dermatitis (napkin eruptions) or those requiring occlusive dressings.

Populations for whom use is contraindicated:

  • Individuals with a documented hypersensitivity or allergy to Betamethasone Dipropionate, Clotrimazole, other corticosteroids, or other imidazole antifungals.
  • Patients with specific non-tinea skin conditions including Rosacea, Acne vulgaris, Perioral Dermatitis, or existing viral/bacterial skin infections.

Pregnancy and lactation eligibility status (if explicitly documented):

  • Conditional Use. Pregnant or breastfeeding women must use the medicine with caution, restricted to the smallest possible area of skin and for the shortest duration necessary, as officially documented.

Connection to the overall eligibility profile

Regulatory documents permit the use of Opizole-B primarily for adults and adolescents over 17 years old with specific tinea infections. The profile imposes explicit, documented prohibitions on use in populations with sensitivities and specific facial dermatoses, and places strict limitations on pediatric use and use during pregnancy due to the risk of systemic absorption.

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What should I know about interactions with other medicines?

Interaction Map: Interactions with other medicines and products — official regulatory information for Opizole-B

Interaction scope

Entity Officially Documented Information
Medicinal product categories with documented interactions Corticosteroid-Containing Products (Topical or Systemic)
Specific interacting medicines (if explicitly listed) Not listed by individual chemical name, only by class.
Mechanistic basis of interactions (only if stated in label) Additive exposure (Pharmacodynamic / Exposure-Altering Interaction): Co-administration increases total systemic glucocorticoid exposure.
Timing-based interaction rules (if applicable) Non-co-administration required with other topical corticosteroid-containing products.
Population-specific interaction notes (if applicable) Risk of increased systemic exposure is noted for patients with liver failure due to potentially augmented absorption.
Interaction-related restrictions Restriction on co-administration with other corticosteroid-containing products.

Interaction classifications (high-level)

Classification Officially Documented Information
Interaction severity classification (as defined in official documents) Use restricted/Caution (Restriction is required to prevent clinically relevant increase in systemic exposure).
Regulatory basis (EMA / FDA / etc.) U.S. Food and Drug Administration (FDA) and DailyMed.
Interaction-context constraints (as defined in official documents) The regulatory profile for this topical combination does not document metabolic (CYP-mediated) or transporter-based interactions.

Resulting interaction structure

Official interaction statements:

  • Co-administration with other corticosteroid-containing products may increase the total systemic glucocorticoid exposure.
  • The label formally advises that other corticosteroid-containing products should not be used with this medicine.
  • The interaction risk of increased systemic exposure may be greater in patients with liver failure.

Connection to the overall interaction profile (2–4 sentences): The official regulatory profile for Opizole-B is primarily defined by a single, documented pharmacodynamic interaction involving the corticosteroid component's potential for additive systemic exposure when co-administered with other glucocorticoid-containing products. This additive effect is an officially recognized interaction outcome that results in a constraint against co-administration to mitigate systemic risk.

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Mechanism of Action

Modulating the Glucocorticoid Receptor Pathway

The corticosteroid component's mechanism is initiated by agonism at the cytoplasmic Glucocorticoid Receptor (GR). This drug-receptor interaction alters gene transcription, leading to the inhibition of Phospholipase A2 (PLA2). By blocking this critical enzyme, the mechanism prevents the formation of key inflammatory mediators, such as prostaglandins and leukotrienes. This core biological process results in local vasoconstriction and a reduction in fluid leakage, which modulates inflammatory signaling.

Disrupting Fungal Ergosterol Biosynthesis

The antifungal component targets the Ergosterol Biosynthesis Pathway within the fungal cell by acting as an inhibitor of the enzyme Lanosterol 14-alpha-demethylase (CYP51). This specific mechanism prevents the fungal cell from manufacturing ergosterol, the sterol required for its cell membrane structure and function. The resulting buildup of toxic precursors and compromised membrane integrity inhibits fungal replication and compromises cell viability.

Complementary Mechanistic Domains

The combined product leverages a complementary mechanism where the corticosteroid rapidly modulates the host's physiological response to inflammation, while the antifungal targets the pathogen's metabolic processes. This parallel action ensures the rapid modulation of inflammatory signaling alongside the process of fungal metabolic disruption, which links the modulation of host response to the inhibition of pathogen growth.

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Dosage and Administration Information

The administration of Opizole-B, a combination product containing Clotrimazole and Betamethasone Dipropionate, is defined by a specific topical regimen. The product is formulated as a cream or lotion and is strictly intended for external use only. Administration is explicitly prohibited for ophthalmic, oral, or intravaginal routes.


General Usage Principles

The standard pattern of use requires the medicine to be applied twice a day, typically in the morning and evening, for specific, limited durations. The prescribed regimen involves gently applying a thin film of the cream or a sufficient amount of the lotion to cover the entire affected area of the skin and the immediate surrounding borders. A crucial constraint is the total quantity applied, which must not exceed 45 grams per week. Furthermore, use in the groin area requires sparing application and loose-fitting clothing.


Course Duration and Age Rules

Treatment is subject to maximum time limits: 1 week for tinea corporis and tinea cruris (should not exceed 2 weeks), and 2 weeks for tinea pedis (should not exceed 4 weeks). Therapy is officially discontinued once clinical control is achieved. Opizole-B is not recommended for use in patients under the age of 17 years. Additionally, the application site should not be covered with occlusive dressings or bandages. The lotion form of the product requires the container to be shaken well before each application.

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Recent Clinical Evidence

Research evidence / Overview of studies for Opizole-B

Research has explored the use of Opizole-B, focusing on how this combination of an antifungal ingredient (Clotrimazol) and an anti-inflammatory ingredient (Betamethasone Dipropionate) is evaluated in specific skin conditions. The current evidence landscape is based on controlled clinical trials that compare the combination cream to its individual ingredients or a non-medicated cream (placebo).


Evidence for Use in Inflammatory Tinea Infections

Research has explored the use of Opizole-B in treating common fungal skin infections, such as Tinea Pedis (Athlete's Foot), Tinea Cruris (Jock Itch), and Tinea Corporis (Ringworm), especially in conditions involving periods of heightened symptoms and physical discomfort. The key studies in this area were short-term Randomized Controlled Trials (RCTs). These studies were used in research exploring how two main types of outcomes change over time: the measured change in the fungus itself (mycological outcome) and the measured change in visible signs like redness and itching (clinical outcome).

In these controlled settings, researchers monitored how quickly the visible signs of inflammation evolved in the observed populations. Studies consistently reported that, when the combination was evaluated against an antifungal cream alone or a placebo, data show patterns related to a higher measurement of change in the intensity of inflammatory signs, such as pruritus (itching) and erythema (redness), during the initial period of application.

However, when comparing the combination product to the antifungal ingredient used alone, research highlights that certainty remains low regarding the final complete elimination of the fungus. Studies report that the rates for achieving mycological outcome at the end of the follow-up period may be comparable between the combination and the antifungal component alone.


Comparative Evaluation of Dual-Action Versus Single Agents

Research explored the outcomes of Opizole-B and those associated with using only one of the active ingredients. These trials assessed whether the presence of the anti-inflammatory component was associated with differences in the measurement of acute inflammatory symptoms.

These comparative studies were used in research exploring short-term symptom changes. Findings describe patterns observed in the studies where the quick change in symptoms, which are outcomes linked to inflammatory or irritative states, was associated with the corticosteroid component. The anti-inflammatory component was observed to be associated with measurable changes in physical discomfort scores during the initial observation period.

A point of uncertainty arising from this research comparison relates to the long-term measurement of mycological status. The current evidence contributes to the broader evidence landscape but does not establish statistically different outcomes for the combination product compared to the antifungal ingredient alone in achieving a sustained mycological outcome.


Long-Term Studies and Follow-up Durations

The available research provides context for the effects of Opizole-B under the specific conditions of the clinical trials. These studies observed responses over defined time intervals.

The majority of pivotal studies that contribute to the current evidence base have follow-up durations that were limited to the short-term. The treatment phases in the key trials were typically short, ranging from only one to four weeks, with a follow-up visit soon after application ceased.

Consequently, there is limited information for long-term outcomes related to Opizole-B. Research has not extensively established the rate at which treated infections may recur after the initial clearance phase. The long-term effects on the skin and the durability of the effect after stopping the treatment are not fully established by the existing trial data.


Evidence in Specific Patient Populations

The primary clinical research on Opizole-B was evaluated in specific populations with conditions characterized by periods of heightened symptoms.

The evidence base largely applies to adults and adolescents who were 12 years of age or older at the time of study enrollment. The patients included in these studies typically presented with at least a moderate to severe level of inflammation associated with their tinea diagnosis. These findings describe group patterns, and results apply only to the populations studied.

Data for certain groups remain insufficient. This includes children under the age of 12. Similarly, there is limited research exploring the outcomes of this product in older adults or individuals with certain pre-existing skin conditions.


What is Still Uncertain About Opizole-B Research

Scientific reviews highlight several areas where the research on Opizole-B has limitations, which is important for fully contextualizing the evidence.

A core limitation is the short duration of the follow-up periods, meaning that long-term effects are not fully established. Additionally, the evidence quality varies across studies when it comes to the question of whether the anti-inflammatory component is associated with the final mycological outcome measurement. Comparative evidence is lacking for a comprehensive understanding of long-term outcomes compared to alternative treatments. Research provides insight into short-term changes, but the evidence highlights what is known — and what is still uncertain.

Key Studies & References

  1. DailyMed Label: Clotrimazole and Betamethasone Dipropionate Cream, USP (Official Prescribing Information)
  2. Topical antifungal treatment for tinea cruris and tinea corporis: a mixed treatment comparison meta-analysis
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Frequently Asked Questions (FAQ)

Common questions about Opizole-B (FAQ)


Q: How is Opizole-B different from single-ingredient antifungal creams like Clotrimazole?

Studies and official information indicate that the combination product may be associated with a greater and quicker measured change in acute inflammatory symptoms, such as itching and redness, during the initial period of use compared to the antifungal ingredient alone. However, research suggests that the final elimination of the fungus (mycological outcome) may be comparable between the combination product and the antifungal-only component.


Q: Can using Opizole-B for a long period of time affect the skin’s thickness?

Yes, official regulatory documents list skin atrophy, which refers to skin thinning, as a documented local reaction associated with the ingredients. Regulatory labels note that the likelihood of skin atrophy occurring increases with prolonged use or when the medicine is applied under occlusive dressings or bandages.


Q: Can Opizole-B affect the body’s natural steroid production (adrenal function)?

According to the official product information, the systemic absorption of the potent corticosteroid component can potentially lead to the suppression of the Hypothalamic-Pituitary-Adrenal (HPA) axis. This may result in a condition called glucocorticosteroid insufficiency. This risk is primarily associated with prolonged or extensive use of the product.


Q: Is there a higher risk of side effects when Opizole-B is applied over a large body surface area?

Yes, official regulatory warnings state that the likelihood of systemic effects, such as HPA axis suppression, increases when the product is applied extensively to large body surface areas. The risk also increases with prolonged use or application under occlusive dressings.


Q: What should be done if the skin condition seems to get worse after several days of using Opizole-B?

Official regulatory patient information indicates that a healthcare provider should be contacted if the condition persists, does not improve, or appears to be worsening after the specified period of treatment time has passed.


Q: What is the general advice on how to stop using Opizole-B after the course is complete?

Regulatory documents state that treatment is officially discontinued once clinical control is achieved for the treated condition. Official documents describe that the medicine should be used for the full prescribed treatment time, even if the symptoms improve sooner.


Q: Is Opizole-B generally suitable for use by children of different age groups?

Use of Opizole-B is only allowed for patients 17 years of age and older. The product is not recommended for use in pediatric patients under 17 years due to their increased susceptibility to systemic toxicity, including the potential for HPA axis suppression, from the corticosteroid component.


Q: What is the eligibility status of Opizole-B for use during pregnancy or while breastfeeding?

Official regulatory documents classify the use of Opizole-B during pregnancy or while breastfeeding as conditional. It must be used with caution and its application is restricted to the smallest possible area of skin and for the shortest duration necessary.


Q: What is the risk classification of Opizole-B for potential drug-drug interactions?

The interaction severity classification for the single documented interaction—the risk of additive exposure with other corticosteroids—is officially designated as "Use restricted/Caution."


Q: Is Opizole-B typically sold as a prescription-only medicine (POM) or is it available over-the-counter (OTC)?

Opizole-B is typically classified as a prescription-only medicine (POM). This requirement is generally due to the presence and potency of the Betamethasone Dipropionate (corticosteroid) component in the formulation.


Q: What is the physical appearance of Opizole-B cream (e.g., color, texture)?

According to official regulatory descriptions, the cream formulation of Opizole-B is described as smooth, uniform, and white to off-white in color. The lotion formulation is typically described as opaque and white.


Q: Is it common to feel a mild burning or stinging sensation when first applying Opizole-B?

Documented local adverse reactions include burning, stinging, and an abnormal skin sensation known as paresthesia (tingling). Paresthesia was reported as Common in clinical trials, occurring in 1.9% of patients.


Q: Is skin discoloration or lightening a documented side effect of using Opizole-B cream?

Hypopigmentation, which means skin lightening or discoloration, is documented as a local adverse reaction. This reaction is primarily associated with the Betamethasone Dipropionate (corticosteroid) component of the product.


Q: If a scheduled application of Opizole-B is forgotten, what is the usual protocol for the missed dose?

Official regulatory patient information outlines a general protocol that involves applying the missed application as soon as possible, unless it is nearly time for the next scheduled application, in which case the missed application is omitted and the regular schedule is resumed.


Q: Why is cleaning and completely drying the affected area important before applying Opizole-B?

Official regulatory patient information describes the cleaning and drying of the affected area as a required preparation step before the product is applied. Following these steps is a standard part of the application process outlined in the official instructions.


Q: What common over-the-counter medicines or supplements are listed as potentially interacting with Opizole-B?

The primary regulatory constraint is against co-administration with other corticosteroid-containing products, whether topical or systemic, due to the risk of additive systemic exposure. Specific individual non-corticosteroid over-the-counter products or supplements are generally not listed by name in the product label.


Q: Is Opizole-B known to interact with systemic medications taken by mouth?

The regulatory profile for this topical combination does not document common drug-drug interactions involving metabolic (CYP-mediated) or transporter-based mechanisms that are typically associated with systemic medications taken by mouth.


Q: Can Opizole-B be used simultaneously with other steroid creams on different body parts?

Official labels formally state a constraint against the use of other corticosteroid-containing products with this medicine. This constraint is in place to mitigate the potential for increased total systemic glucocorticoid exposure.


Q: Where can a user find the official product information (e.g., Patient Information Leaflet) for Opizole-B)?

The official product information, such as the patient information leaflet, is provided by the manufacturer and the prescribing pharmacy. This document is based on regulatory documents issued by agencies like the FDA or EMA.

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How should Opizole-B be stored and disposed of?

The storage and disposal of Opizole-B (Clotrimazole and Betamethasone Dipropionate Cream/Lotion) are strictly governed by official labeling to ensure stability and public safety.

Official Storage Requirements

Storage Condition Type Requirement
Temperature Store at controlled room temperature, typically between 20 and 25 C (68 and 77 F).
Protection Keep the container tightly closed when not in use; do not freeze and avoid excessive heat.
Child Safety Keep out of the sight and reach of children at all times.

Product Disposal

Official disposal guidelines require that unused or expired Opizole-B must not be flushed down a toilet or poured into any drain unless specific instructions permit it. The product must be disposed of according to local and national regulations for unused prescription medications, such as through drug take-back programs or specific instructions for household trash disposal.

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

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