Fusibac-H

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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.

Overview of Fusibac-H

Property Description
Active Ingredients Fusidic Acid, Hydrocortisone
Form Cream or Ointment (Topical Preparation)
Pharmacological Class Topical Antibiotic and Mild Corticosteroid Combination
General Purpose Management of Infected Inflammatory Skin Conditions
Origin Semi-synthetic

Defining the Core Identity and Composition of Fusibac-H

Fusibac-H is recognized as a specific combination medicine intended for application via the topical route directly onto the skin. The identity of this product, often listed alongside analogues like Fucidin H, is defined by its two distinct active ingredients: the antibiotic Fusidic Acid and the anti-inflammatory mild corticosteroid Hydrocortisone. The formulation, which is often supplied as a cream or a richer ointment, functions as a dedicated topical preparation to deliver the components efficiently. The presence of Fusidic Acid, which originates from the fungus Fusidium coccineum, classifies the overall product as semi-synthetic.

The Dual Pharmacological Classification and Purpose

The unique character of Fusibac-H is defined by its dual-class membership: it functions both as a Topical Antibiotic and a Mild Corticosteroid. The Fusidic Acid component belongs to the fusidane class, which provides potent antibacterial action against common skin bacteria. Simultaneously, Hydrocortisone acts as a glucocorticoid, providing the necessary anti-inflammatory properties and reducing swelling. The combined therapeutic purpose is the targeted resolution of inflammatory skin conditions that have been complicated by a secondary bacterial infection.

High-Level Summary of Application Form and General Benefit

As a topical preparation, the principal benefit of Fusibac-H lies in its ability to concentrate the effect of its active ingredients precisely where the inflammation and infection are present. This localized delivery is consistent with its classification as a prescription-only medication, reinforcing its intended use for specific, physician-diagnosed conditions. The medicine’s overall benefit is the rapid relief from inflammatory symptoms, such as reducing swelling, visible redness, and intense itchiness, achieved by managing both the bacterial contamination and the inflammatory reaction simultaneously.

Regulatory References

  1. NIH Staph. aureus activity

What side effects are possible with Fusibac-H?

Fusibac-H: Possible Side Effects and Safety Information

Fusibac-H combines the antibiotic fusidic acid and the mild corticosteroid hydrocortisone. The safety profile is characterized by local skin reactions and, with misuse, potential risks from the corticosteroid component.


Adverse Reactions

Adverse reactions are primarily local and typically affect the application site.

Frequency Common Adverse Reactions (>1/100) Serious Risks (Associated with Corticosteroid)
Common Itching (pruritus), burning, and irritation at the site of application. Adrenal Suppression (HPA axis suppression), especially with prolonged use, large areas, or occlusion.
Uncommon Worsening of eczema, various forms of local dermatitis, skin rash. Ocular effects (Raised intra-ocular pressure, glaucoma) when used near the eyes.
Rare Hypersensitivity reactions (e.g., severe allergic reaction/anaphylaxis). Skin atrophy, striae, and telangiectasia with extended use.

Safety Restrictions and Monitoring

Contraindications include known hypersensitivity to the ingredients, fungal infections, tuberculosis, syphilis, chickenpox, or other viral skin diseases.

  • Duration of Use: Long-term continuous topical therapy, typically defined as more than 14 days, should be avoided to minimise the risk of corticosteroid systemic effects and the development of antibiotic resistance.
  • Application Site: Use near the eyes must be carefully avoided due to the risk of ocular effects like glaucoma. Use on the face, scalp, or large body areas increases the risk of systemic absorption.
  • Pediatrics: Children, especially those under three years old, are more susceptible to the systemic effects of the corticosteroid, such as HPA axis suppression and Cushing's syndrome, and its use in this population requires particular caution.

Overdose and Emergency Response

Overdose and When to Seek Help

Overdose with topical medications like Fusibac-H (fusidic acid/hydrocortisone) primarily relates to two situations: accidental ingestion or systemic effects from misuse.

Immediate medical help is required in the event of accidental swallowing of the cream or if you experience signs of a serious allergic reaction, such as dizziness, a severe rash, swelling of the mouth, throat, or lips, or trouble breathing. In either of these cases, contact emergency services, your doctor, or a Poison Control Centre immediately, even if no symptoms are present following ingestion.

Systemic Risk from Misuse

Using the cream in large amounts, over extensive areas, or for prolonged periods (typically more than 14 days) may lead to the absorption of the hydrocortisone component into the bloodstream. This can potentially cause serious effects linked to adrenal suppression (a weak adrenal gland) or Cushing's syndrome, which may manifest as:

System Affected Potential Serious Signs
Endocrine/Adrenal Unusual weakness, weight loss, increased thirst/urination, fatigue, or problems controlling blood sugar.
Ocular (if cream enters eye) Blurry vision, severe eye or head pain, or sudden sight loss (potential glaucoma).

If you notice any of these serious signs, you must stop using the product and seek urgent medical attention.

Therapeutic Uses of Fusibac-H

What Fusibac-H Treats: Main Uses and Benefits

Fusibac-H is commonly used across therapeutic domains where patients experience conditions involving inflammatory or irritative processes (such as eczema or dermatitis) that are also complicated by a secondary bacterial infection. This medication is generally relevant for managing symptoms in conditions such as atopic eczema, contact dermatitis, and seborrhoeic dermatitis when they present with signs of bacterial contamination.

The medication is used for managing symptom clusters that may become intense or disruptive, specifically addressing symptoms related to both the inflammatory and bacterial elements. It is relevant for easing pronounced itching, visible redness, and swelling, alongside physical signs of contamination like weeping and crusting. The primary therapeutic benefit is to offer symptomatic relief that helps patients cope more steadily by addressing both the inflammatory and bacterial elements concurrently. This supports patients during difficult episodes and assists with maintaining functional stability.


“The primary goal is to provide supportive relief that helps ease the overall symptom burden during episodes of heightened discomfort.”


Quick Fact: Relief for Dual Discomfort

Quick Fact: Relief for Infected Skin Inflammation (Eczema and Dermatitis with bacterial signs)

Regulatory References

  1. Health Canada Drug and Health Product Register

Eligibility and Restrictions for Use

Eligibility Map: Who can and cannot use Fusibac-H

The use of Fusibac-H is defined by strict eligibility rules established in official regulatory documents. It is approved for use by adults for the management of specific infected inflammatory skin conditions.

Populations for Whom Use is Contraindicated

The medicine is contraindicated and must not be used by patients with a known hypersensitivity to Fusidic Acid, Hydrocortisone, or any excipients. Absolute prohibition applies if the skin condition is caused by viruses (such as herpes simplex or chickenpox), fungi, or skin manifestations of tuberculosis or syphilis. Use is also contraindicated for acne rosacea and perioral dermatitis.

Age-Related Eligibility and Restrictions

Fusibac-H is not recommended for use in children under 3 years of age due to a lack of sufficient data on safety and efficacy in this group. Use in all children requires caution due to the risk of systemic effects from the corticosteroid component. Application near the eyes must be avoided due to the potential for irritation and glaucoma.

Pregnancy and Lactation Eligibility Status

Use is generally permitted in pregnant and breastfeeding women when clinically necessary. However, the regulatory status requires that the cream be avoided on the breast area during lactation to prevent accidental ingestion by the nursing infant.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Fusibac-H is a topical combination medicine, and its official interaction profile is characterized by a minimal risk of interactions with other medicines. The regulatory documentation explicitly states that no interaction studies have been performed for this cream or ointment formulation.

Interactions with other systemically administered medicinal products are considered minimal due to the negligible systemic exposure of both Fusidic Acid and Hydrocortisone following topical application. This minimal absorption profile results in no documented restrictions concerning co-administration with food, alcohol, or herbal products. Furthermore, the product label does not contain mandatory timing or separation requirements for administration alongside other treatments.

While the topical formulation presents minimal risk, regulatory agencies highlight a critical interaction for the product's active ingredient, Fusidic Acid, when administered systemically (orally or intravenously). Systemic Fusidic Acid is formally contraindicated for use with statins (HMG-CoA reductase inhibitors, such as simvastatin or atorvastatin).

This systemic restriction is necessary because Fusidic Acid is known to inhibit metabolic enzymes and drug transporters, which can lead to a significant increase in the plasma concentration of co-administered statins. This exposure modification creates a risk of severe and potentially fatal muscle damage, known as rhabdomyolysis. This systemic restriction does not apply to the topical use, but it constitutes a major interaction constraint for the active substance itself.

Mechanism of Action

Specific Blockade of Bacterial Protein Synthesis

This mechanistic domain is governed by Fusidic Acid, which acts as a specific inhibitor by binding to the bacterial Elongation Factor G ( EF-G) within the ribosome. This interaction physically halts a critical step in protein assembly, resulting in the cessation of bacterial replication, which removes the source of localized microbial activity.

Genomic Modulation of Inflammation and Immune Response

The mechanism of Hydrocortisone involves its binding to Intracellular Glucocorticoid Receptors (GR), initiating a cascade that modulates gene transcription. This process represses the expression of pro-inflammatory mediators (like cytokines and prostaglandins) and reduces microvascular permeability. The physiological consequence is localized vasoconstriction and a marked dampening of the inflammatory signals, resulting in decreased fluid exudation and attenuation of sensory nerve signaling.

Mechanistic Synergy and Boundary Constraints

The drug's overall profile is shaped by the simultaneous operation of two distinct mechanisms: one targeting bacterial ribosomal function and the other modulating host inflammatory gene expression. This mechanistic partnership involves the inhibition of bacterial protein synthesis and the modulation of local inflammatory cascades, leading to a coordinated change in the tissue's physiological status. However, the antibiotic mechanism is strictly constrained by the potential for bacterial resistance (e.g., EF-G alterations) and its inherent narrow spectrum against non-susceptible organisms, defining the boundaries of its biological effectiveness.

Dosage and Administration Information

Fusibac-H is administered via the cutaneous route as a topical preparation for external use only. The product is a fixed-dose combination containing 2% Fusidic Acid and 1% Hydrocortisone Acetate, which defines the strength of the preparation. The usage protocol specifies that a small quantity of the cream or ointment should be applied to the specific area of skin requiring attention.

The standard dosing frequency for this topical combination is twice daily for the duration of the treatment course. This frequency is generally applied across both the adult and pediatric populations.

A defining constraint of the treatment is its duration. A single course should not normally exceed 14 days (two weeks). Continuous or long-term therapy with this type of combination product is explicitly avoided.

For the physical act of application, the preparation should be gently rubbed into the affected skin. A key administrative constraint is the use of dressings: the product is typically used without occlusive (airtight) dressings unless specifically advised by a healthcare provider, as this can alter the amount of medicine absorbed. Furthermore, the product must not be applied in or near the eyes. This procedural structure defines the standardized approach to using the medicine.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Fusibac-H

Evidence for Use in Infected Inflammatory Skin Conditions

The body of evidence for Fusibac-H includes short-term Randomized Controlled Trials (RCTs) and systematic reviews. These studies were used in research exploring how symptoms change over time in conditions characterized by fluctuating or episodic manifestations, such as eczema or dermatitis where a secondary bacterial infection is present. Researchers examined adults and children over the age of one in populations presenting with visible signs of bacterial contamination, such as weeping or crusting.

Studies explored outcomes related to physical discomfort and outcomes linked to inflammatory or irritative states. Bacteriological clearance—the measured reduction of bacteria from the skin lesions—was also monitored for many participants. Studies reported patterns observed in the research related to changes measured in the visible signs of inflammation. However, systematic reviews have noted that the evidence contributing to understanding symptom patterns in the dual-ingredient product has been heterogeneous, meaning findings were mixed across the analyzed trials.

Focus on Dual-Component Evaluation in Research

Research has been conducted to compare the dual-ingredient preparation against the single Hydrocortisone component (the corticosteroid alone). Studies explored whether the addition of the Fusidic Acid component (the antibiotic) was associated with a different pattern of outcomes.

Findings describe group patterns related to measurements taken of assessment scores, but some evidence is limited when evaluating whether the added antibiotic resulted in a different outcome when compared to the corticosteroid component used on its own in cases of infected eczema.

Uncertainty and Remaining Research Gaps

It remains uncertain whether a measurable difference in outcomes exists when comparing the antibiotic component plus the steroid against the steroid alone in all cases of infected inflammatory skin conditions, as comparative evidence is often limited or heterogeneous. The majority of evidence has been derived from studies observing responses over defined time intervals of 7 to 14 days. Consequently, long-term effects are not fully established. Further research to explore short-term symptom changes in specific populations remains a focus of the evidence landscape.

Frequently Asked Questions (FAQ)

Common questions about Fusibac-H (FAQ)


Q: How quickly does Fusibac-H usually start to work for a skin infection?

Studies and official information indicate that relief from signs of inflammation, such as redness and itching, is typically observed after a few days of treatment. Clinical trials often evaluate changes in these symptoms over the short duration of the treatment course. However, the official prescribing information generally does not provide a specific number of hours or days for the first visible effect.


Q: Can Fusibac-H be used on the face?

Regulatory documents state that this medicine should be used with caution when applied to the face. The official product information advises avoiding prolonged use on the face due to the increased risk of certain corticosteroid side effects, such as skin thinning. Furthermore, application near the eyes should be carefully avoided due to the potential risk of eye-related complications.


Q: Is it normal to feel a slight stinging or burning when first applying Fusibac-H?

Yes, regulatory documents list burning and irritation at the application site as common adverse reactions that may occur during treatment. If the irritation becomes severe or worsens, discussing symptoms with a healthcare professional is appropriate.


Q: What happens if I stop using Fusibac-H too soon?

As with all antibiotic medicines, if the medicine is discontinued before the prescribed duration is complete, it may increase the risk of developing antibiotic resistance or cause the original skin infection or inflammation to return. Completing the prescribed course is often considered essential to minimize these risks, unless a healthcare provider advises otherwise.


Q: What are the signs that Fusibac-H is not working for my infection?

If the skin condition shows no signs of improvement, or if the symptoms of infection and inflammation worsen during use, this may indicate that the medication is not working effectively. The official label advises that if a skin infection is not controlled with topical treatment, the situation may warrant consulting a healthcare professional for further review and assessment of alternative treatment options.


Q: Can I use Fusibac-H for athlete's foot?

No. Official regulatory information states that this medicine is contraindicated, meaning it should not be used, for skin conditions known or suspected to be caused by fungal infections. Since athlete's foot (tinea pedis) is a fungal infection, this medicine is not considered appropriate for its treatment.


Q: Does Fusibac-H interact with common over-the-counter pain relievers?

Official regulatory documents state that no specific interaction studies have been performed for the topical cream. However, interactions with other systemically administered medicines (like oral pain relievers) are considered minimal because the active ingredients are absorbed into the bloodstream in only negligible amounts when applied to the skin.


Q: What cosmetics or skin care products should I avoid while using Fusibac-H?

While the official documentation does not list specific cosmetic or skin care product categories to avoid, the cream contains certain inactive ingredients (excipients) that may cause local skin reactions. For this reason, caution is advised when using other topical products simultaneously, to avoid potential irritation or contact dermatitis.


Q: Is Fusibac-H available as a cream, an ointment, or both?

The product is manufactured and available as a cream formulation. Depending on the market and regulatory authorization, it may also be available as an ointment. Both forms contain the same two active ingredients: Fusidic Acid and Hydrocortisone.


Q: Why does Fusibac-H contain the letter 'H' in its name?

Fusibac-H is a combination product made up of the antibiotic Fusidic Acid and the corticosteroid Hydrocortisone. The 'H' in the product name is typically used to designate the presence of the Hydrocortisone component in this dual-ingredient preparation.


Q: Does the effectiveness of Fusibac-H decrease over time with repeated use?

The use of the antibiotic component over long periods or repeated courses may increase the risk of developing bacterial resistance, which could potentially lead to treatment failure if the same bacteria are involved. For this reason, official prescribing instructions emphasize that continuous, long-term topical therapy is generally not recommended.


Q: Is it normal for the treated skin to look slightly lighter after using Fusibac-H?

Yes, changes in skin color, such as hypopigmentation (skin lightening), are listed as a potential side effect associated with the class of mild topical corticosteroids like hydrocortisone. This risk is primarily associated with extended or prolonged use of the steroid component.


Q: Can Fusibac-H be used for wounds or cuts that are not obviously infected?

The medicine is officially indicated for the treatment of infected inflammatory dermatoses—skin conditions where both inflammation and a secondary bacterial infection are present. It is not intended for use on simple, uninfected wounds or cuts.

--UNSAFE START

Q: What is the risk of developing a secondary infection after using Fusibac-H?

The product label highlights that due to the action of the corticosteroid component, which has an immunosuppressant effect on the skin, there may be an increased susceptibility to infection. This includes the potential for aggravation of an existing infection or the activation of latent infections, necessitating caution during use.


Q: Can people with diabetes safely use Fusibac-H?

While topical absorption is minimal, there is a theoretical risk that corticosteroids could affect blood glucose levels if absorbed systemically in high amounts. Official documentation advises caution when the product is used by people with diabetes mellitus. Monitoring of blood glucose levels is generally recommended during treatment, as advised by a healthcare provider.


Q: What is the shelf life of Fusibac-H once it has been opened?

Official regulatory documents specify that the cream has a limited stability once the tube has been opened. The required in-use shelf life is typically 3 months after first opening the tube, after which the remaining product should be properly discarded.


Q: Does Fusibac-H penetrate deep into the skin, or does it only work on the surface?

Pharmacokinetic studies indicate that the antibiotic active ingredient, Fusidic Acid, has the capability to penetrate through intact human skin. However, the overall amount of medicine that is absorbed into the deeper layers or the systemic circulation is dependent on various factors, including the condition of the skin barrier and the application area.


Q: Is the antibiotic in Fusibac-H effective against resistant bacteria?

The official prescribing information notes that bacterial resistance has been reported to occur with the topical use of fusidic acid. Its effectiveness against existing resistant bacteria is not guaranteed, and treatment requires medical assessment to ensure the specific infection is susceptible to the antibiotic component.


Q: What should I do if I miss an application of Fusibac-H?

Regulatory sources generally suggest that if an application is missed, it can be applied when remembered. However, if it is close to the next scheduled time, skipping the missed application and continuing the regular schedule is advised, without applying a double amount.


Q: Does Fusibac-H cause drowsiness or affect my ability to drive?

Based on the official product information, this medicine has no or negligible influence on a patient’s ability to drive or operate machinery. This is expected because very little of the active ingredients are absorbed into the bloodstream when applied to the skin.


Q: Is Fusibac-H known by any other brand names globally?

The combination of Fusidic Acid and Hydrocortisone is marketed under various brand names in different countries. The most common analogue cited in regulatory documents is often Fucidin H.

How should Fusibac-H be stored and disposed of?

How to Store and Dispose of Fusibac-H?

Fusibac-H Cream must be stored in accordance with regulatory instructions to ensure its stability and effectiveness.

Storage Conditions

Requirement Official Regulatory Mandate
Temperature Store below 30°C (or not above 30 C).
Environment Must be protected from light and moisture.
Stability Discard after 3 months of first opening the tube.
Safety Keep out of the sight and the reach of children.

Special Handling and Disposal

Official labeling includes a warning that fabric (such as clothing or bedding) that has been in contact with the cream may be a serious fire hazard and burn more easily.

Expired or unused product must not be thrown away via household waste or wastewater. Disposal must be completed by asking a pharmacist for the correct procedure, which is required to help protect the environment.

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

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