Superin

Quick links to important sections

Superin

Medically reviewed

Rosario Oropesa

Last updated on 22/12/2025

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

Overview of Superin

Property Description
Active ingredient Butenafine hydrochloride
Form Cream (1%)
Pharmacological class Benzylamine Antifungal
Common use Fungal skin infections (Dermatophytosis)
Origin Synthetic

Superin: Definition and Pharmacological Classification

Superin is a synthetic medicine delivered as a topical cream, primarily defined by its single active ingredient, butenafine hydrochloride, which serves as a specialized antifungal agent. Pharmacologically, the drug is classified as a benzylamine antifungal, a distinct chemical class that is structurally and mechanistically related to the allylamine antifungals such as terbinafine. This classification confirms that the drug is solely purposed for combating specific pathogens responsible for fungal skin infections known as dermatophytosis or tinea. The agent is clinically recognized for its reliable efficacy compared to some older antifungal classes.

Composition, Form, and Delivery

The medicinal preparation Superin is a single-entity product formulated as a 1% topical cream designed exclusively for external use. This specific dosage form incorporates the butenafine hydrochloride into a white cream base composed of purified water and essential fatty excipients, including cetyl alcohol and stearic acid, which facilitate the localized delivery of the active component. The topical route of administration is mandatory, ensuring the therapeutic action is concentrated directly at the infected area on the skin. As a potent topical antifungal agent, Superin is a recognized option for adults and children over 12 dealing with common athlete's foot.

The General Purpose of Butenafine: Fungicidal Action

The general purpose of the medicine is to achieve fungicidal activity, which means it actively eliminates the fungus causing the infection rather than simply inhibiting its proliferation. Butenafine exerts this effect by interfering with the fungus’s sterol biosynthesis pathway, specifically by blocking the enzyme squalene epoxidase. This definitive, destructive action is critical for achieving complete resolution of conditions such as dermatophytosis or tinea infections.

Regulatory References

  1. Health Canada Drug Product Database
  2. National Institutes of Health
  3. Health Canada Drug Product Database (DIN 02242139)
  4. Health Canada Product Page

What side effects are possible with Superin?

The official safety profile for Superin (butenafine hydrochloride 1% cream) is strictly derived from government regulatory documents, focusing primarily on reactions at the site of topical application. The majority of documented adverse reactions are localized and non-serious, reflecting the medicine’s low systemic absorption.

Reactions are classified based on frequency as documented in regulatory texts.

Documented Adverse Reactions

Classification Common Adverse Reactions
Common Burning/stinging, itching (pruritus), erythema (redness), irritation, or localized worsening of the condition.
Rare Taste disturbance (a single systemic effect reported in a controlled trial).

The most significant safety constraint noted in prescribing information is a contraindication for individuals with known or suspected hypersensitivity to butenafine hydrochloride or any component of the cream, as severe local reactions (e.g., intense stinging) may necessitate stopping treatment. Additionally, caution is advised for patients known to be sensitive to allylamine antifungals due to potential structural cross-reactivity.

Population-Specific Safety Notes

The safety and effectiveness of the cream have not been established in the pediatric population under 12 years of age. For other groups, such as the elderly, no specific warnings or dosage adjustments are documented. Use during pregnancy is classified as Category C, requiring a formal assessment of potential risks due to the lack of adequate and controlled studies.

Overdose and Emergency Response

Superin Overdose and when to seek help

The official regulatory profile for Superin (butenafine hydrochloride 1% cream) is based on the extremely low risk of systemic exposure due to its topical route of application. Overdose from routine or excessive topical use is not anticipated to cause systemic toxicity, although mild local skin irritation or redness may occur.

Domain Official Regulatory Statement
Documented overdose presentations Systemic effects are not anticipated due to minimal percutaneous absorption.
Physiological systems affected Systemic effects are unlikely. The primary risk requiring intervention is accidental oral ingestion.
Emergency-response statements Management is symptomatic and supportive. No specific antidote is known.
When immediate medical help is required Seek immediate medical attention or contact a Poison Control Center immediately if Superin is accidentally swallowed.

Overdose Classifications (High-Level)

Classification Official Regulatory Statement
Severity classification Systemic overdose is classified as not anticipated following intended topical use.
Overdose-context constraints Clinical observation may be required following the acute oral ingestion of a significant quantity.

Connection to the overall overdose profile: Regulatory documents define the overdose profile by establishing that the minimal systemic absorption of the cream renders toxicity from topical overuse highly improbable. Consequently, the regulatory guidance focuses strictly on the non-routine exposure of accidental ingestion, which requires the immediate and mandatory action of seeking emergency medical care. This ensures that the response is aligned with the specific exposure route that carries systemic risk, as the required management is limited to supportive measures due to the absence of a known specific antidote.

Therapeutic Uses of Superin

What Superin Treats: Main Uses and Benefits

Superin (butenafine hydrochloride cream 1%) is commonly used across therapeutic domains where short-term symptom management is appropriate for superficial fungal infections of the skin. The therapeutic use of Superin is generally aligned with the management of Tinea infections, which include common conditions such as athlete's foot (Tinea pedis), jock itch (Tinea cruris), and ringworm of the body (Tinea corporis).

The medication is relevant for both adults and adolescents over 12 and contributes to easing the overall symptom load across these conditions characterized by periods of heightened symptoms. It is relevant for easing the symptom clusters that include itching, burning, and the observable signs of epidermal disruption, such as scaling.

Quick Fact: Relief for Inflammatory Discomfort

Superin is utilized in therapeutic domains relevant for addressing the cause of the infection. This supports the overall effort to ease the symptomatic burden associated with recurrent or episodic manifestations, and contributes to improved day-to-day comfort during periods of heightened symptoms.

Regulatory References

  1. National Library of Medicine's DailyMed overview

Eligibility and Restrictions for Use

Who Can and Cannot Use Superin?

This section outlines the official population eligibility and non-eligibility rules for Superin (butenafine hydrochloride 1% cream), as documented in governmental regulatory sources.

Eligibility Status

The use of Superin is contraindicated in individuals with a known or suspected hypersensitivity (allergy) to butenafine hydrochloride or any component of the cream formulation. This restriction also applies to patients with known sensitivity to allylamine antifungal agents due to potential cross-reactivity.

Age and Physiological Restrictions

Category Regulatory Status
Approved Age Adults and children 12 years of age and older are approved for use.
Pediatric Use Safety and efficacy are not established for children younger than 12 years of age.
Pregnancy Use is conditional; classified as Category C and should be used only if clearly needed.
Lactation Caution must be exercised as it is not known if the drug is excreted in human milk.

Condition-Based Limitations

Use has not been studied in immunocompromised patients, marking this as a population with data limitations according to official regulatory labeling.

What should I know about interactions with other medicines?

Superin Interactions with other medicines and products

The regulatory profile for Superin (butenafine hydrochloride 1% cream) is determined by its specialized role as a topical antifungal agent with minimal systemic absorption. This characteristic significantly limits the potential for systemic interactions with other medicines.


Systemic Drug-Drug Interactions

Official prescribing information documents no known or expected systemic drug–drug interactions with Superin. The quantity of butenafine that reaches the bloodstream after topical application is minimal, resulting in a low risk for clinically significant pharmacokinetic interactions, such as those involving major liver enzymes or drug transporters. Regulatory labels state that potential systemic interactions have not been systematically evaluated. Consequently, no specific systemic medicinal products or product classes are listed in the labeling as requiring dose adjustment, timing separation, or formal prohibition when used concurrently with Superin.


Interactions with Food, Alcohol, and Supplements

Official regulatory documentation reports no known interactions with food, alcohol, or herbal products. No specific dietary or consumption restrictions related to systemic interactions are included in the labeling for this medicine.


Local Co-administration Restrictions

The only interaction-related constraint documented for Superin is an administrative restriction concerning local co-administration. Superin must not be concurrently applied with other topical medicinal products, creams, sprays, or ointments to the same area of the skin. This constraint ensures proper product function and is not related to systemic interaction risk.

Mechanism of Action

Fungal Cell Membrane Disruption and Lysis

Superin's core mechanism involves the non-competitive inhibition of the fungal enzyme Squalene Epoxidase (ERG1). This critical block in the Ergosterol biosynthesis pathway leads to a dual physiological effect: the toxic accumulation of Squalene and the depletion of necessary stabilizing Ergosterol within the fungal cell. This combined failure critically compromises the Fungal Cell Membrane, producing a fungicidal action (killing the cell) that results in the physical failure and elimination of the pathogen.


Direct Anti-Inflammatory Modulation and Activity Constraints

In addition to its primary action on the fungal cell, the molecule possesses an intrinsic secondary mechanistic property involving the local host tissue, where it directly modulates the activity of local inflammatory mediators. This dual biological approach contributes to the regulation of biological processes in the host tissue. However, the mechanism is not universally fungicidal, as its effect is primarily fungistatic (inhibiting growth) against certain fungal species, representing a mechanistic difference in effect against certain fungal species.

Dosage and Administration Information

Superin is a medicine strictly for topical use on the skin, and is authorized for use in adults and children 12 years of age and older.

Administration and Preparation

The correct administration protocol involves specific procedural steps. The treatment area must be washed with soap and water and dried completely before a thin layer of cream is applied to the affected skin and the immediate surrounding area. Following administration, the hands must be washed to complete the procedural requirements. The cream is for external, skin-only use, and application must be avoided near mucous membranes, including the eyes, mouth, and vagina.

Dosing and Duration

The dosing schedule is standardized and depends on the specific fungal infection. The cream is applied once daily for conditions such as Tinea cruris (jock itch) and Tinea corporis (ringworm). For Tinea pedis (athlete's foot) between the toes, the usage pattern provides two regimens. A mandatory instruction is that the full duration of the prescribed course must be completed.

Condition Frequency Required Duration
Tinea pedis (between toes) Twice Daily 1 week
Tinea cruris / Tinea corporis Once Daily 2 weeks
Tinea pedis (between toes) Once Daily 4 weeks

Special Procedural Conditions

To maintain the integrity of the treatment, the treated area should not be covered with an occlusive, airtight dressing unless a healthcare professional provides explicit direction.

Recent Clinical Evidence

Research evidence / Overview of Studies for Superin (Butenafine)


Evidence for Use in Tinea Pedis (Athlete's Foot)

Research has primarily utilized short-term, randomized controlled trials to explore the use of Superin in conditions marked by functional limitations and symptoms where intensity may vary, specifically interdigital athlete's foot. These studies examined adult and adolescent populations (generally over 12 years of age) with confirmed cases. Researchers monitored outcomes related to physical discomfort, such as itching, scaling, and fissuring, alongside laboratory findings related to fungal presence. They also assessed Clinical status scores, based on objective scores for signs and symptoms.

Studies reported how symptoms evolved in the observed populations, noting changes measured during the study period in both the clinical signs and the laboratory evidence of the fungus. Research highlights changes measured during the short, defined time interval of the trial, with findings describing patterns observed in the studies related to patterns of change in the observed irritative states.


Research Supporting Tinea Cruris and Tinea Corporis (Jock Itch and Ringworm)

Superin was evaluated in randomized, vehicle-controlled trials for conditions associated with acute or disruptive episodes, such as tinea cruris (jock itch) and tinea corporis (ringworm). Research examined outcomes linked to inflammatory or irritative states, specifically focusing on the combination of laboratory findings and the clinical presentation of signs like redness and scaling in adult and adolescent populations.

Studies monitored how symptoms evolved in the observed populations, reporting measurements of the proportion of individuals whose lab tests showed changes in the fungal presence following the defined treatment time interval. Findings describe patterns observed in the studies regarding changes in clinical outcomes reflecting daily functioning or activity level, generally over intermediate follow-up durations.


Long-Term Evidence and Durability of Study Findings

Research exploring short-term symptom changes is available, but there is limited information for long-term outcomes. The available evidence focuses heavily on defined time intervals immediately following treatment completion. Studies generally explore short-term symptom patterns. Long-term effects are not fully established, and more research is needed to characterize the long-term pattern of conditions characterized by fluctuating or episodic manifestations.


Evidence in Specific Patient Groups

Superin was evaluated in studies involving the general adult population and adolescents over the age of 12. However, data for certain groups remain insufficient. Evidence derived from settings with varying symptom burdens remains insufficient for children younger than 12. Comparative evidence is lacking for these specific subgroups, meaning that evidence is limited regarding how symptoms evolve in these specific patient groups.


What is Still Uncertain About the Research Record for Superin

Comparative evidence is lacking when assessing Superin against other classes of medication over extended periods. Follow-up durations were limited across many studies, preventing a full understanding of the long-term outcomes. The current limitation regarding long-term data reflects an area where further study is needed. Research provides context but not individual predictions, and evidence highlights what is known—and what is still uncertain—about conditions characterized by fluctuating or episodic manifestations.

Key Studies & References

  1. Efficacy of 1% Butenafine Hydrochloride Cream in the Treatment of Tinea Pedis

Frequently Asked Questions (FAQ)

Common questions about Superin (FAQ)

Q: Is Superin the same kind of medicine as other common drugs used for the same conditions?

Official documents classify Superin (butenafine) as a benzylamine antifungal. This medicine is part of a chemical class that is related to, but distinct from, other medicines like allylamine antifungals (such as terbinafine) that are also used to manage fungal skin infections.

Q: Is Superin commonly used outside of its main stated purpose (clarification only)?

According to official product information, Superin is solely purposed for combating the specific pathogens responsible for fungal skin infections, such as dermatophytosis or tinea infections. Regulatory documents do not address or authorize its use for any other purpose.

Q: Is Superin considered a high-risk medication by regulatory bodies?

Regulatory documents indicate that Superin is applied topically and has minimal systemic absorption, meaning very little enters the bloodstream. Due to this characteristic, it is generally associated with a low potential for systemic interactions. The majority of documented adverse reactions are localized and non-serious reactions at the application site.

Q: Why do doctors often switch people from a similar medicine to Superin?

The primary action of Superin is described as fungicidal, meaning it actively kills the fungus causing the infection by blocking the enzyme Squalene Epoxidase. This specific fungicidal property is a key characteristic noted in official documents that distinguishes it from certain other antifungal classes.

Q: Can the effectiveness of Superin change over time?

Official instructions emphasize that the full, prescribed course of treatment is required to be completed to support Superin in achieving the intended result. Research studies focus on the short, defined treatment interval and do not provide information on effectiveness changing over longer periods.

Q: Are there any lifestyle changes commonly recommended alongside taking Superin?

Official prescribing information, particularly for tinea pedis (athlete's foot), may include general hygiene advice. This includes recommendations to wear well-fitting, ventilated shoes and change socks at least once daily, in addition to the standard instruction to wash and thoroughly dry the affected skin before application.

Q: What does the term 'contraindication' mean in relation to Superin?

In official medical documents, a contraindication means that the medicine is officially prohibited from being used by certain individuals because the potential risks outweigh any benefits. For Superin, this restriction applies if an individual has a known allergy or hypersensitivity to the medicine or any of its components.

Q: Why is it important to tell my doctor about all medications before starting Superin?

Regulatory documents state there are no known systemic drug-drug interactions because minimal amounts enter the bloodstream. However, it is explicitly required that Superin must not be concurrently applied with any other topical products to the same skin area. This information relates to the administrative need to adhere to local co-administration restrictions.

Q: What happens to Superin after it's processed by the body (non-clinical explanation)?

Official documents note that only a minimal amount of Superin is absorbed systemically after topical application, meaning very little reaches the bloodstream. This small amount that is absorbed is processed (metabolized) by the liver.

Q: How quickly does Superin typically start to show its expected effects?

Information based on clinical experience suggests that individuals may begin to notice early relief of cutaneous symptoms, like itching and irritation, within two to three days of starting treatment. However, the full therapeutic benefit requires the completion of the prescribed course.

Q: How long does a dose of Superin stay in the body or remain active?

Regulatory data indicates that, once absorbed, Superin remains in the plasma for an extended period, with half-lives ranging from approximately 35 hours up to greater than 150 hours. Low levels of the drug were observed in the bloodstream for up to seven days after the last application.

Q: Does taking Superin mean I can't drive or operate heavy machinery?

Regulatory documents for this topically applied medicine do not list any known adverse reactions related to central nervous system impairment, such as drowsiness or dizziness. Therefore, official safety information does not suggest that the medicine would affect a person's ability to drive or operate machinery.

Q: What should I do if I miss a dose of Superin (informational)?

The general informational procedure describes applying the missed dose as soon as it is remembered. If it is almost time for the next scheduled application, the missed dose should be skipped entirely. Official guidance notes that double or extra doses are not to be used.

Q: Can Superin affect blood test results?

Because the medicine is applied topically to the skin and only undergoes minimal systemic absorption, the amount of drug entering the bloodstream is very low. Official information suggests that the potential risk of Superin interfering with standard blood test results is minimal.

Q: Does Superin cause drowsiness or fatigue in most users?

The official safety profile primarily documents reactions that occur at the application site, such as itching or irritation. It does not include systemic effects such as drowsiness or fatigue among the commonly reported adverse reactions.

Q: If I stop taking Superin, are there any general expectations for how my body will react?

Official instructions strongly emphasize that the full duration of the prescribed course is required to be completed to ensure the infection is eliminated. Stopping the medicine earlier than directed may result in the infection not being fully resolved, according to official guidance.

Q: Can Superin affect sleep patterns?

The official safety profile for the cream primarily lists localized reactions at the application site. It does not include any known effects on sleep patterns as a documented adverse reaction.

Q: Is Superin safe for patients who have kidney or liver issues (descriptive)?

Because Superin has low systemic absorption, regulatory documentation suggests that dosage adjustment is unlikely to be necessary for patients who have altered kidney or liver function. The low systemic absorption suggests a low potential for the medicine to impact these organs.

Q: Do studies suggest Superin is habit-forming?

Superin is not classified as a controlled substance by regulatory bodies. Official product documentation does not include any information or suggest any potential for the medicine to be habit-forming or cause dependence.

Q: What if I take Superin and forget I took it and take another one (general concern)?

In the event of an accidental application, the procedural information states that double or extra doses are not to be used. The guidance for a missed dose should be followed to resume the scheduled application pattern.

Q: Is Superin known to cause changes in mood or behavior?

The official safety profile for the cream primarily lists localized reactions at the application site. It does not include changes in mood or behavior among documented adverse reactions.

Q: Is Superin available over the counter in any countries?

Butenafine hydrochloride cream, the medicine contained in Superin, is available as both an over-the-counter (OTC) medicine and via prescription for the treatment of fungal skin infections.

Q: Why is Superin only available by prescription?

The active ingredient in Superin (butenafine cream) is available as both an over-the-counter (OTC) medicine and as a prescription medicine. The availability status often depends on the specific country's regulations and the strength or formulation of the product.

Q: Does Superin have a known 'black box' warning in the US?

The product labeling issued by the U.S. Food and Drug Administration (FDA) does not include a 'Black Box' warning. This type of warning is reserved for medicines with severe safety risks that warrant heightened caution.

Q: How do I know if the Superin tablet is expired?

Superin is a cream, not a tablet, and official documents note that it is not to be used after the expiration date printed on the tube or packaging. It should be kept in the original container, tightly closed, and protected from freezing.

Q: Is Superin a generic or a brand-name drug?

Superin contains the active ingredient butenafine hydrochloride, which is the generic name of the medicine. Butenafine is available under various brand names as well as in generic product forms.

Q: Can using Superin cause weight changes?

The official safety profile primarily documents localized reactions at the application site. It does not list weight changes as a documented adverse reaction for this topically applied medicine.

Q: Are there any differences in effectiveness between Superin's brand-name and generic versions?

Regulatory bodies require that when a generic version of the cream is approved, it must be determined to be bioequivalent to the original brand-name drug. This means the generic product is considered to have the same effectiveness as the original brand-name drug.

Q: What is the primary difference in how Superin works compared to its competitors?

Superin belongs to the benzylamine class and is noted for its powerful fungicidal action, meaning it actively kills the fungus. It achieves this by inhibiting the enzyme Squalene Epoxidase, which is a key mechanistic difference from certain other antifungal classes that may only inhibit fungal growth.

How should Superin be stored and disposed of?

How to Store and Dispose of Superin?

Superin (butenafine hydrochloride cream 1%) must be stored and disposed of according to the explicit instructions in its official regulatory labeling to ensure product quality and public safety.

Storage Component Official Regulatory Requirement
Temperature Store at controlled room temperature between 20 C and 25 C (68 F and 77 F).
Handling/Protection Protect from freezing. Keep in the original container, tightly closed.
Child Safety Keep the product out of the sight and reach of children and pets.
Disposal Use a drug take-back program or discard in household trash by mixing with an undesirable substance (e.g., used coffee grounds). The cream must not be flushed down the toilet or sink.

These conditions ensure the stability of the cream until its expiration date and mitigate risks associated with accidental exposure or improper environmental discharge.

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

Available in countries:

Equivalent of Superin found in:

A-Z Index: