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Locabiosol 1%

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Locabiosol 1%

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Method of action: Throat Preparations

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 Locabiosol 1%

Quick Facts

Property Description
Active Ingredient Fusafungine
Form Pressurized Metered Dose Spray (Suspension)
Pharmacological Class Local Polypeptide Antibiotic
Common Use Symptomatic relief of upper respiratory inflammation
Origin Derived from the fungus Fusarium lateritium

What Type of Medicine is Locabiosol 1%?

Locabiosol 1% is a pharmaceutical preparation containing the active ingredient Fusafungine, and is classified as a local antibiotic used in throat preparations. The medicine belongs to the polypeptide antibiotic class, and it is specifically known for its topical action profile, which is a defining characteristic that differentiates it from systemic anti-infectives. Fusafungine is a localized therapeutic agent with its effect concentrated at the application site rather than requiring broad absorption into the bloodstream. This local action capability ensures its effect is confined mainly to the area of irritation.


Composition, Form, and Natural Origin

The medicine is supplied as a pressurized metered dose suspension, which is a precise spray form utilized for topical administration to the oral and nasal mucosa. The active ingredient, Fusafungine, is an oligopeptide substance, which is a small protein-like molecule characterized by its natural origin, having been isolated from cultures of the fungus Fusarium lateritium. The designation of "1%" refers to the concentration of the active substance within this specific formulation. Historically, the brand has often been positioned for use in both adult and pediatric patient groups, highlighting its accessibility and localized administration route as differentiating factors.


How Does Its Dual Action Relate to General Benefit?

Locabiosol's general benefit is derived from a dual mechanism of effect that includes both an anti-infective and an anti-inflammatory action. The anti-infective capacity is characterized by bacteriostatic and fungistatic activity, meaning it slows the growth of common local pathogens. Simultaneously, the drug exerts a distinct anti-inflammatory action to help moderate the irritation and swelling in the affected mucosal tissues. The drug is recognized for its potential to assist in the symptomatic relief of throat and nasal irritation, offering a combined approach to managing localized discomfort.

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What side effects are possible with Locabiosol 1%?

Official Safety Profile of Locabiosol 1% (Fusafungine)

Official regulatory documents classify the possible side effects of Locabiosol based on the frequency with which they are reported, reflecting an established safety profile that includes both local irritations and the risk of serious allergic reactions.


Frequency-Classified Adverse Reactions

The following are examples of adverse reactions listed in official labeling, categorized by their frequency:

Classification Examples of Reactions (SOC Categories)
Very Common Sneezing, dysgeusia (taste disturbance), conjunctival congestion
Common Nose dryness, dry throat, throat irritation, cough, nausea
Very Rare Anaphylactic shock, bronchospasm, laryngeal oedema, skin rash, urticaria

The adverse effects are formally grouped into affected physiological systems, primarily including Immune system disorders (e.g., severe allergies), Respiratory disorders (e.g., breathing difficulties), and General disorders and administration site conditions (e.g., local irritation).


Serious Adverse Reactions and Safety Constraints

The most significant safety concern documented by regulatory authorities is the potential for serious allergic reactions, including anaphylactic shock, bronchospasm, and laryngeal oedema, which are documented as Very Rare but can be life-threatening. These severe reactions have been reported to occur soon after the use of the spray.

Official regulatory assessments have noted that the use of fusafungine for oromucosal and nasal application is associated with these serious adverse allergic reactions. Consequently, regulatory bodies have concluded that the overall benefit-risk balance for fusafungine-containing medicines is negative for all authorized uses.

Specific safety statements are documented for certain patient groups, including caution or contraindication recommended for children less than 12 years of age.

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Overdose and Emergency Response

Overdose and when to seek help

The information regarding overdose for Fusafungine (Locabiosol 1%) is strictly based on data documented in official governmental regulatory sources. Experience with overdose from this polypeptide antibiotic spray is reported to be limited in regulatory documents.


Documented Clinical Manifestations

Official labeling describes specific clinical presentations following excessive use, which include both localized and systemic effects. Documented manifestations may include numbness in the mouth and localized irritation such as chemical burn of the throat. Systemic signs reported include dizziness and a worsening of sore throat. Circulatory disorders are also noted in the regulatory documents as a potential outcome of overdose.


Required Emergency Actions and Management

When overdose is suspected, official guidance mandates specific procedural steps for management. The regulatory text explicitly states that management should consist of treatment of clinical symptoms and routine monitoring of the patient's condition. Furthermore, it is officially documented that no specific antidote is known for a Fusafungine overdose. Therefore, medical attention is required to initiate the mandated symptomatic and supportive treatment and continuous observation for the full resolution of clinical signs, particularly those related to the circulatory system.

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Therapeutic Uses of Locabiosol 1%

What Locabiosol 1% Treats: Main Uses and Benefits

Locabiosol 1% is commonly used across conditions presenting with acute episodes of upper respiratory inflammation. It is applied across therapeutic domains where short-term symptomatic assistance is needed to address symptoms that create noticeable physiological strain. The medicine is generally used for the symptomatic management of conditions such as sinusitis, rhinitis, rhinopharyngitis (common cold), and tonsillitis.


Easing Localized Pain and Congestion

This medicine is commonly used to help with certain distressing symptoms that interfere with daily comfort. These include sore throat, throat irritation, dryness, and acute nasal symptoms like stuffiness and congestion. It is applied during phases when symptoms become more noticeable, providing supportive relief that contributes to maintaining a sense of stability.


Quick Fact Block

Quick Fact Supportive Use in Symptom Management
Primary Focus Acute, localized discomfort in the throat and nose.
General Benefit Contributes to improved comfort during periods of heightened symptoms.
Used for Managing Symptoms related to inflammatory or irritative states.
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Eligibility and Restrictions for Use

Eligibility for Locabiosol 1% (Fusafungine)

Official regulatory information defines strict constraints on the use of Locabiosol 1%, primarily due to an overarching regulatory action and specific safety contraindications.


Regulatory Status and Population Eligibility

The marketing authorizations for fusafungine-containing medicines, including Locabiosol 1%, have been revoked across the European Union and associated markets. This decision was based on the official finding that the risks outweighed the benefits for all authorised uses.


Contraindications and Restrictions

Category Regulatory Status
Pediatric Use Contraindicated in children under 12 years of age.
Hypersensitivity/Allergy Contraindicated for patients with a known hypersensitivity to fusafungine or any excipient, or those with a history of allergic tendencies.
Respiratory Conditions Contraindicated in patients with pre-existing conditions like bronchospasm (severe airway constriction).
Lactation Not recommended for women who are breastfeeding.
Pregnancy Caution should be exercised when considering use in pregnant women.

The regulatory profile establishes an overall prohibition of use in many markets and mandates that the medicine must not be used by children under 12 or by any patient with pre-existing allergic or asthmatic conditions, according to official regulatory documents.

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What should I know about interactions with other medicines?

Interactions with other medicines and products

The official regulatory documentation for Locabiosol 1%, which contains the active substance Fusafungine, establishes its interaction profile based on two primary regulatory facts. This section details the officially documented status and constraints, without providing usage instructions or therapeutic context.

Documented Interaction Status

Interaction Category Official Regulatory Finding
Pharmacokinetic (Metabolic) Data No formal interaction studies have been performed.
Transporter-Mediated Interactions No data is formally documented in the official labeling.
Timing Rules / Food Interactions No mandatory timing separation requirements or specific interactions with food, alcohol, or supplements are listed.

Regulatory Constraint on Use

The ultimate restriction concerning this product is a total regulatory prohibition. The marketing authorization for all medicinal products containing Fusafungine was formally revoked across the European Union, a decision endorsed by the Co-ordination Group for Mutual Recognition and Decentralised Procedures – Human (CMDh). This mandatory withdrawal constitutes the highest-level regulatory constraint on the product’s availability and potential co-administration with other medicines in those regions.

Connection to the Overall Interaction Profile

The regulatory structure for Locabiosol 1% is primarily defined by the explicit statement in its official documents that no dedicated interaction studies were performed. This means the label provides no specific information regarding potential metabolic pathways, transporter effects, or necessary timing separation requirements. Consequently, the only definitive regulatory constraint documented is the comprehensive withdrawal of the product from the market.

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Mechanism of Action

Mechanistic Domains: Microbial Membrane Disruption and Inflammatory Signal Modulation

The active molecule, Fusafungine, acts via two distinct mechanistic domains. Primarily, it engages the lipid bilayer of susceptible bacteria and fungi, inserting itself as an ionophore. This mechanism induces the formation of pores that interfere with essential transmembrane ion gradients, resulting in the inhibition of microbial proliferation (bacteriostasis/fungistasis). Concurrently, it interacts with host immune cells to modulate their activity, influencing the pathways that govern inflammatory responses.

Modulation of Adhesion Molecules and Pro-Inflammatory Cytokines

The mechanism involves the molecule acting as a negative modulator within the host inflammatory cascade. It reduces the expression of Intercellular Adhesion Molecule-1 (ICAM-1), a protein necessary for the adhesion and infiltration of immune cells into the tissue. Furthermore, it suppresses the synthesis and release of pro-inflammatory cytokines (e.g., TNF-alpha) and other reactive species. This modulation limits the recruitment of immune cells and affects local fluid dynamics, which leads to a reduction in localized tissue edema.

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Dosage and Administration Information

How Locabiosol 1% is Used: Administration Guidelines

Locabiosol 1% is administered exclusively for local topical application to the oral and nasal mucosa via a pressurized metered dose spray. The standard usage protocol defines precise administration parameters for the active ingredient, Fusafungine, which is delivered at a concentration of 125 micrograms per puff.

Dosing and Scheduling

Administration Parameter Instruction
Route of Administration Oromucosal (via the mouth) and Nasal (via the nose).
Adult Dosing 4 puffs into the mouth and 2 puffs into each nostril per application.
Pediatric Dosing 2 puffs into the mouth and 1 puff into each nostril per application (for children over 30 months).
Frequency Administered 4 times daily for both routes.
Course Duration The standard course typically lasts 7 days. Use must be stopped if the clinical situation does not improve after this period.

Preparation and Procedural Conditions

Proper delivery of the metered dose requires specific preparatory steps. Before the initial administration, the device's valve must be primed by pressing the main actuator four times. During the application itself, the container must be held upright to ensure accurate dose actuation. No dose adjustments are specified for the elderly or for patients with renal or hepatic impairment. The protocol establishes the drug's use as a short-term, time-bound application.

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Recent Clinical Evidence

Overview of Clinical Data for Fusafungine (Locabiosol 1%)

Locabiosol 1% contains the ingredient fusafungine, a cyclodepsipeptide with antibacterial and anti-inflammatory properties that was previously used as a localized treatment for upper airway infections such as rhinopharyngitis, rhinitis, and tonsillitis.

Efficacy and Study Outcomes

Early clinical research suggested fusafungine might be associated with an improvement in symptoms of upper respiratory tract infections. For instance, some studies evaluating its use in conditions like acute rhinosinusitis found a reduction in symptom scores compared to placebo, with some differences reaching statistical significance, particularly within the first 24 hours of treatment. Other trials investigating acute laryngitis indicated a potential for increased clinical cure rates at five days compared to control. However, a comprehensive review of the clinical data concluded that the evidence supporting the beneficial effects of fusafungine was limited and considered weak.

Regulatory Safety Review and Conclusion

The benefit-risk profile of fusafungine was subject to review by European regulatory authorities, which considered both the limited evidence of benefit and the safety data. The review noted that while serious allergic reactions, including life-threatening anaphylactic reactions, were rare, they could occur soon after use and involved bronchospasm. Given the generally mild and self-limiting nature of upper airway infections, it was concluded that the potential risks of fusafungine, including the inability to rule out a risk of promoting antibiotic resistance, outweighed its limited benefits. As a result, authorities in the European Union recommended and endorsed the revocation of marketing authorizations for all fusafungine-containing medicinal products, including Locabiosol, in 2016.

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Frequently Asked Questions (FAQ)

Common questions about Locabiosol 1% (FAQ)

Q: Why do some people say they feel a burning sensation when they first use it?

Official safety documents state that local reactions are common with this product. Examples of common effects listed include throat irritation and dry throat. This localized sensation may be what users describe as a burning feeling. If a severe reaction occurs, professional medical attention should be sought immediately.

Q: Can I use Locabiosol 1% if I am taking over-the-counter pain relievers?

Regulatory documents state that no formal studies dedicated to drug interactions have been performed for this medicine. This lack of information means specific guidance is unavailable from official sources. Official regulatory information does not contain specific guidance on using this product alongside over-the-counter pain relievers.

Q: Is it true that Locabiosol 1% has been used in Europe for a long time?

Yes, the active ingredient in Locabiosol 1% has a long history of use. Official regulatory background information indicates that its first authorization in the European Union was in 1963.

Q: Is Locabiosol 1% effective against all types of germs that cause throat issues?

The medicine is specifically indicated for local infections caused by micro-organisms sensitive to this anti-infective. Its regulatory profile describes its activity as bacteriostatic (slowing bacterial growth) and fungistatic (slowing fungal growth). This limits its range of activity to certain susceptible bacteria and fungi.

Q: Is Locabiosol 1% considered an analgesic or just an antiseptic?

The active ingredient, Fusafungine, is formally classified as a local polypeptide antibiotic, which provides an anti-infective action. Official product information also notes that the medicine possesses distinct anti-inflammatory properties, which are related to the management of local tissue irritation and swelling.

Q: Do studies mention long-term safety concerns with Locabiosol 1%?

Official guidelines define the product as a short-term treatment, with a recommended course duration of typically seven days. Regulatory warnings caution that prolonged use of an anti-infective may lead to a superinfection, which is an infection caused by organisms that become resistant to the medication.

Q: Does Locabiosol 1% have any known interaction with caffeine or alcohol?

Formal studies to check for interactions with food, supplements, or common substances like caffeine were not performed. It is noted that the final product does contain small amounts of ethanol (alcohol). This alcohol content is generally very low, at less than 100 mg per dose.

Q: Is Locabiosol 1% sold under a generic name?

Locabiosol is a brand name. The active ingredient, which is also the internationally recognized generic name for the substance, is Fusafungine.

Q: Does Locabiosol 1% contain steroids?

The active ingredient of this medicine is Fusafungine, a polypeptide antibiotic. Steroid compounds are not listed among the active or primary excipients detailed in the regulatory summary of the product's composition.

Q: Is Locabiosol 1% available without a prescription in some countries?

Official regulatory bodies have taken action to limit the availability of this product. The marketing authorizations for this medicine have been revoked across the European Union and associated markets due to concerns that its risks outweighed its benefits.

Q: Is there a different name for Locabiosol 1% internationally?

Yes, the active ingredient Fusafungine has been marketed under different brand names in various countries prior to its revocation. These internationally recognized trade names include Locabiotal and Bioparox.

Q: Is Locabiosol 1% described as a preventative treatment?

No, official regulatory documents state the medicine is intended for the treatment of local infections and related inflammation. It is not designated for prophylactic (preventative) use.

Q: Can I use Locabiosol 1% if I have high blood pressure?

High blood pressure, or hypertension, is not listed in the official regulatory documents as a contraindication (a reason not to use the drug) or a special precaution for use. A restriction related to this condition is not specified in the product's official regulatory documents.

Q: Is Locabiosol 1% tested on children in research studies?

Official administration guidelines provide a specific pediatric dosing regimen for children over 30 months of age. This inclusion in the formal prescribing information implies that the necessary safety and effectiveness data were established for use in this age group.

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How should Locabiosol 1% be stored and disposed of?

Official Storage and Disposal Requirements

Regulatory documents for medicines like Locabiosol 1% (fusafungine) specify strict requirements for storage and disposal, particularly as it is a pressurized aerosol product.

Storage/Disposal Component Official Mandate
Temperature and Heat Store below a specified maximum temperature (e.g., 25 C or 30 C). Do not expose to temperatures exceeding 50 C or direct heat sources.
Physical Protection Keep the container in its original packaging. Protect from freezing and direct sunlight.
Child Safety Keep out of the sight and reach of children.
Disposal Do not dispose of via household trash or wastewater. Return unused or expired medicine to a designated pharmaceutical take-back program or pharmacy collection point.

These official statements ensure product stability and environmental safety by controlling exposure to temperature extremes and mandating responsible disposal practices outside the domestic waste system.

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

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