Defuzin

Quick links to important sections

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 Defuzin

Property Description
Active ingredient Fusidic Acid (often as Sodium Fusidate)
Form Cream, Ointment, Eye Drops, Tablets, Suspension
Pharmacological class Antibiotic; Fusidane Class; Steroidal Antibiotic
Common use Bacterial Skin and Eye Infections
Origin Natural product (from Fusidium coccineum fungus)

Defuzin: An Introduction to the Fusidic Acid Antibiotic Class

Defuzin is a prescription-only medication whose active component is Fusidic Acid, classified as an antibiotic and antibacterial agent. It belongs to the unique fusidane class of antimicrobials, a highly distinctive pharmacological group that is clinically recognized for its reliable efficacy against Gram-positive bacteria. The drug is particularly valuable in treating staphylococcal infections where pathogens may exhibit resistance to older antibiotic families.

Fusidic Acid has a unique chemical structure, a steroidal antibiotic derived from a natural product, having been originally isolated from the fungus Fusidium coccineum. This natural origin and chemical composition provide a therapeutic advantage in difficult-to-treat infections.

Composition, Forms, and General Therapeutic Purpose

The primary therapeutic purpose of Defuzin is to control and stop the growth of bacterial infections. To ensure effective delivery, the product is prepared in multiple pharmaceutical preparations, including specialized topical preparations like cream and ointment for skin infections, eye drops for ophthalmic application, and systemic formulations such as tablets. The medication can be a single-entity product or a combination product, where its effectiveness is supported by pharmacological studies that confirm its stable activity against targeted bacterial populations.

The Pharmacological Distinction of Fusidic Acid

Fusidic Acid is functionally unique because it acts as a highly specific protein synthesis inhibitor. This mechanism operates by targeting the bacteria's internal machinery, arresting the multiplication cycle of susceptible pathogens. Unlike agents that induce rapid cellular death, Fusidic Acid exerts a bacteriostatic effect, stopping the bacterial population from increasing, which is valued in therapeutic settings as it gives the immune system time to fully overcome the infection.

What side effects are possible with Defuzin?

Possible Side Effects and Safety Information

The safety profile of Defuzin (Fusidic Acid) is documented according to government regulatory standards, classifying potential adverse reactions by System Organ Class and frequency.

Adverse Reaction Classifications

The most frequently reported undesirable effects are categorized as Uncommon (affecting up to 1 in 100 people) and are primarily associated with the Skin and Subcutaneous Tissue Disorders and General Disorders and Administration Site Conditions. These reactions may include various forms of dermatitis, pruritus (itching), erythema (redness), and localized symptoms like pain or a burning sensation at the application site.

More severe adverse reactions are classified as Rare (affecting up to 1 in 1,000 people). These include clinically significant systemic events such as hypersensitivity reactions, angioedema (swelling), and urticaria (hives).

Safety Constraints and Considerations

Official regulatory documents note that prolonged or recurrent use carries a risk of developing contact sensitisation and increasing the chance of antibiotic resistance within the bacterial population. When applied to the face, contact with the eyes should be avoided due to the documented risk of conjunctival irritation.

For special populations, safety information is often distinct for the systemic (non-topical) formulations. For example, individuals with severe hepatic impairment and those co-administering statins have specific constraints or cautions documented for systemic Fusidic Acid due to risks like hepatotoxicity and rhabdomyolysis, respectively. Regulatory bodies state that the severity and type of adverse effects in the paediatric population are expected to be consistent with those observed in adults.

Overdose and Emergency Response

Overdose Map: Overdose and when to seek help — Official Regulatory Information for Defuzin (Fusidic Acid)

Overdose Scope

Domain Official Regulatory Statement
Documented overdose presentations Acute overdose, particularly with systemic formulations, is officially documented to present with gastrointestinal disturbances.
Physiological systems affected (as stated in label) The primary system affected in acute overdose is the Gastrointestinal system, manifesting as abdominal discomfort, pain, diarrhea, dyspepsia, nausea, and vomiting.
Dose-related or exposure-related factors (if applicable) Overdose from accidental ingestion of the topical cream or ointment is classified as unlikely to cause any harm.
Population-specific overdose notes (if applicable) The risk for accidental ingestion of the topical formulation is noted as a specific consideration for children aged less than 1 year and weighing 10 kg or less.
Emergency-response statements (as written in official documents) Management should be directed towards the alleviation of symptoms; Symptomatic and supportive treatment is the required regulatory protocol.
When immediate medical help is required (label-derived phrasing only) Contact a healthcare professional, hospital emergency department, or regional Poison Control Centre immediately for suspected overdose, even if there are no symptoms.

Overdose Classifications (High-Level)

Classification Official Regulatory Statement
Severity classification (as defined in official documents) The likelihood of overdose occurring is classified as unlikely for topical formulations.
Overdose-context constraints (as defined in official documents) No specific antidote is known, and dialysis will not increase the clearance of fusidic acid.

Resulting Overdose Structure

Official Overdose Statements:

  • Acute systemic overdose is documented to present with gastrointestinal disturbances.
  • Symptomatic and supportive treatment is the mandated management protocol.
  • Accidental ingestion of the topical formulation is unlikely to cause harm, except potentially in infants 10 kg or less.

Connection to the Overall Overdose Profile

Regulatory documents define the overdose profile primarily through the confirmed manifestation of gastrointestinal disturbance following systemic overexposure. This guides the required symptomatic and supportive treatment, given that regulators explicitly state no specific antidote is known. The requirement to seek immediate medical attention is a mandated action for all suspected overdose scenarios, even when the overall risk from topical ingestion is classified as unlikely.

Therapeutic Uses of Defuzin

What Defuzin Treats: Main Uses and Benefits

Defuzin is a targeted antibacterial agent commonly used to help treat specific bacterial infections, primarily those caused by susceptible Gram-positive organisms, notably Staphylococcus aureus. This targeted use is applied in clinical settings that involve acute or unstable symptom patterns, which may be part of supportive symptom management when appropriate.

It is commonly used to help with bacterial skin infections, including cellulitis, impetigo, and bacterial eye infections such as conjunctivitis. The medication helps address symptom clusters that may become intense or disruptive, offering symptomatic relief that helps patients cope more steadily with symptom fluctuations.

“Applied across therapeutic domains where additional symptomatic support is needed, Defuzin is relevant for easing symptoms related to inflammatory or irritative states.”

The medication may provide support that helps ease the overall symptom burden during symptomatic periods.


Quick Fact: Relief for Inflammatory Skin Manifestations

Defuzin is commonly used across conditions presenting with localized discomfort and inflammatory or irritative states, such as those seen in folliculitis and infected wounds. The application may assist in limiting the functional strain of the infection by addressing the bacterial cause.

Eligibility and Restrictions for Use

Eligibility Map: Who Can and Cannot Use Defuzin (Fusidic Acid) — Official Regulatory Information

This map details the official population eligibility and non-eligibility for Defuzin, strictly based on governmental regulatory documents.

Eligibility scope Status as Stated in Label
Populations for whom use is allowed Adults, Children (general), Elderly, Patients with Renal Impairment (no dosage change)
Populations for whom use is not recommended Systemic use in Pregnancy/Lactation, Patients treated with HIV-Protease Inhibitors
Populations for whom use is contraindicated Hypersensitivity, Concomitant Statins (Systemic form), Specific Hereditary Metabolic Disorders (Tablet excipient-dependent)

Age-Related Eligibility Rules

  • Neonates: Particular care is advised for systemic use due to a theoretical risk of kernicterus.
  • Children: Use is generally permitted, though some ophthalmic forms may be established for use in children geq2 years of age.
  • Older Adults (Geriatrics): Systemic use requires no dosage alteration; however, some regional labels for ophthalmic forms note insufficient data for authorization.

Condition-Specific Eligibility Rules

  • Hepatic Dysfunction: Systemic use is restricted and requires caution and monitoring of liver function.
  • Biliary Conditions: Caution is required in patients with biliary disease and biliary tract obstruction.

Pregnancy and Lactation Eligibility Status (Form-Dependent)

  • Topical (Cream/Ointment): Can be used; systemic exposure is negligible. Recommended to avoid applying near the breast area when breastfeeding.
  • Systemic (Oral): Use is preferable to avoid during pregnancy; a risk to the suckling child cannot be excluded during breastfeeding.

Connection to the overall eligibility profile: Official regulatory documents define Defuzin's eligibility through absolute contraindications for hypersensitivity and co-medication risks (statins). The profile is further structured by specific cautionary statements and monitoring requirements for individuals with impaired hepatic function or those in vulnerable states, such as neonates, and distinguishes eligibility based on the systemic versus topical formulation.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Regulatory documentation for systemic Defuzin (Fusidic Acid) details specific interaction patterns with other medicines and substances. This information strictly describes formal constraints and outcomes as stated by regulatory bodies.

Prohibited Co-Administration

The co-administration of systemic Defuzin with medicines in the Statin class (HMG-CoA reductase inhibitors), such as Atorvastatin or Simvastatin, is formally contraindicated due to the officially documented risk of rhabdomyolysis. Statin therapy must be discontinued throughout the entire course of Defuzin treatment and should not be reintroduced until seven days after the last dose.

Exposure-Altering Drug Interactions

Co-administration with other medicines may alter plasma exposure. The combination with certain HIV Protease Inhibitors (e.g., Ritonavir, Saquinavir) is not recommended due to suspected mutual inhibition of metabolism, which results in increased plasma concentrations of both agents. Furthermore, systemic use has been officially reported to cause an increase in the plasma concentration of Cyclosporin.

Pharmacodynamic and Food Interactions

The co-administration of systemic Defuzin with Oral Anticoagulants (Coumarin derivatives, such as Warfarin) is officially documented to alter the anticoagulant effect and requires caution. Regarding food interactions, taking the oral tablet formulation with a meal reduces the extent and rate of absorption. Population-specific caution is officially advised for neonates due to the pharmacodynamic effect of competitively inhibiting bilirubin-albumin binding.

Mechanism of Action

Targeted Arrest of Bacterial Protein Elongation

This mechanism focuses on Elongation Factor G (EF-G), a unique enzyme within the bacterial 70S ribosome. The drug acts as a highly specialized inhibitor by binding to and stabilizing the EF-G enzyme onto the ribosome after the translocation step. This molecular interference prevents the ribosome from moving along the mRNA strand, halting the elongation of necessary bacterial proteins and enzymes.

️ Physiological Consequence: Bacteriostatic Containment

By blocking the synthesis of structural and functional proteins, the drug exerts a bacteriostatic physiological effect, meaning it stops the target bacterial population from multiplying. This containment of pathogen proliferation enables host immunological response engagement with the non-replicating bacterial population. The mechanism demonstrates limited functional activity against most Gram-negative species and is constrained by acquired resistance pathways such as target modification and molecular rescue proteins.

Dosage and Administration Information

Defuzin is utilized across four primary routes of administration: oral, intravenous (IV), topical, and ophthalmic. The available pharmaceutical forms—including 250 mg tablets, oral suspension, 2% cream or ointment, and 1% eye drops or gel—determine the necessary route and schedule. For systemic treatment, the standard adult oral dose is typically 500 mg of Sodium Fusidate, which is administered three times daily. This 500 mg dose is generally repeated every eight hours for a total daily intake of 1500 mg. A crucial administration constraint for oral formulations is that they must be taken without food to ensure consistent use.

Administration of the topical cream or ointment (2% strength) is usually scheduled for two or three applications per day, though this frequency may be reduced to once daily if an occlusive dressing is applied. Ophthalmic use, such as the 1% viscous gel, is commonly administered twice daily, specifically in the morning and the evening. For more severe systemic issues, the intravenous solution, also dosed at 500 mg three times daily, must be administered through a slow infusion lasting at least two hours.

Pediatric dosing for oral forms is weight- or age-dependent, requiring specific adjustment as outlined in prescribing information. Across all forms, the duration of use is typically limited to 5 to 10 days, with official guidelines stating that the course should generally not exceed 14 days. If a dose is missed, instructions advise skipping it if the time for the next scheduled dose is near, and strictly prohibit taking a double dose to compensate.

Recent Clinical Evidence

Research evidence / Overview of studies for Defuzin (Fusidic Acid)

The clinical evaluation of Defuzin, which contains Fusidic Acid, was studied for use in infections, primarily on the skin and in the eyes. Research has explored patterns related to symptom and bacterial level changes observed in study participants during defined time intervals. The evidence contributes to the broader evidence landscape concerning short-term symptom patterns related to these types of acute infections.


Evidence for Uncomplicated Bacterial Skin Infections

Research has examined the topical use of Fusidic Acid for conditions associated with acute or disruptive episodes, such as impetigo and secondarily infected skin. This evidence is primarily derived from short-term Randomized Controlled Trials (RCTs) and systematic reviews that included comparisons to an inactive product (placebo) or other active pharmaceutical agents.

These studies monitored specific outcomes, including data related to Clinical Endpoint measures (which involved using standardized scales to track the measured change in visible infection signs, like redness or crusting, and reported discomfort) and Bacteriological Clearance (assessing the removal of the infection-causing bacteria, most notably Staphylococcus aureus, from the skin site).

Outcomes and Comparisons in Skin Infection Trials

Reports described patterns observed in the studies where groups evaluated with topical Fusidic Acid showed data related to Clinical Endpoint measures and bacteriological clearance. The trials examined were for localized, uncomplicated impetigo. Research explored whether patterns in symptom evolution for Fusidic Acid were similar to those observed with certain other topical pharmaceutical agents. The findings were mixed across various studies. Studies conducted on this specific indication were generally characterized by evidence derived from high-quality study designs (e.g., blinded, placebo-controlled trials).

What remains uncertain is the need for more information regarding long-term outcomes. The long-term effects are not fully established, and follow-up durations were limited, typically ending shortly after the defined observation period. Furthermore, scientific literature documents concerns related to the patterns of bacterial resistance that may emerge when the medicine is used widely, which is an area that continues to be monitored.


Evidence for Bacterial Eye Infections (Conjunctivitis)

Fusidic Acid was studied for its use as an ophthalmic (eye) agent in individuals with superficial bacterial eye infections, such as acute conjunctivitis.

The studies explored specific outcomes linked to inflammatory or irritative states in the eye. Researchers monitored data on the measured change in clinical signs (focusing on the measured change in discharge and inflammation) and Microbiological Clearance (tracking the clearance of susceptible bacteria from the eye culture). Study populations included adults and children presenting with these acute or episodic manifestations.

Key Studies & References

  1. Fusidic Acid - DrugBank record

Frequently Asked Questions (FAQ)

Common questions about Defuzin (FAQ)

Q: What is the main difference between Defuzin and other similar treatments?

Official documents describe the active component, Fusidic Acid, as belonging to the unique fusidane class of antibiotics. This class is pharmacologically distinct because it acts as a highly specific inhibitor of bacterial protein synthesis. This specific mechanism of action differentiates it from many other commonly prescribed antibiotic families.


Q: Is Defuzin used for conditions other than what it is officially approved for?

The official regulatory documents strictly define the approved uses of Defuzin for treating infections caused by susceptible bacteria, most notably in conditions involving the skin and eyes. Information provided in the regulatory literature focuses exclusively on these approved uses, and discussions of unapproved uses are not included.


Q: How quickly does Defuzin typically start to work after someone begins taking it?

Defuzin is classified as bacteriostatic, meaning its role is to stop the bacteria from multiplying rather than killing them immediately. Official studies confirm that measured changes in infection signs are tracked over the typical treatment duration of mathbf5 to mathbf10 days. Regulatory documents do not provide a fixed timeline for the individual onset of symptom relief.


Q: What are the most common reasons someone might stop taking Defuzin?

For the majority of users, the treatment is stopped upon the completion of the prescribed course, which is typically 5 to 10 days. However, regulatory documents mandate immediate discontinuation if signs of a severe allergic reaction (hypersensitivity) occur or if the systemic form is mistakenly co-administered with a Statin medication.


Q: Can Defuzin cause changes in mood or behavior?

When reviewing the official safety profile, changes to mood or behavior are not commonly listed in the tables of undesirable effects. The most frequently reported reactions are typically dermatological or related to the application site.


Q: Are there any specific foods or drinks that should be avoided while using Defuzin?

Regulatory information indicates the oral tablet formulation should be taken without food, as a meal can reduce how much medicine is absorbed into the body. For the topical or ophthalmic forms (creams, ointments, eye drops), official warnings do not list specific foods or drinks that must be avoided.


Q: What happens if Defuzin is taken at the same time as common over-the-counter pain relievers?

Official product information details specific interactions with certain prescription medications, such as Statins and Oral Anticoagulants. Regulatory documentation typically does not report formal interactions with common over-the-counter pain relievers during the short-term use of Defuzin.


Q: What is the significance of the box warning (or similar regulatory warning) for Defuzin?

Regulatory agencies require prominent warnings for high-risk situations. For systemic Defuzin, the most critical constraint is the formal contraindication (must not be used) when taken with Statins, due to a documented risk of muscle breakdown (rhabdomyolysis). Additionally, caution is officially required for individuals with severe hepatic (liver) impairment.


Q: Does Defuzin interact with herbal supplements or vitamins?

Regulatory guidance specifically addresses interactions with certain prescription medications. Official documents do not typically list formal interactions with common herbal supplements or vitamins. For the topical and ophthalmic forms, public health guidance suggests no known issues with these products.


Q: What are the general instructions if a person is traveling internationally with Defuzin?

Official product labels provide specific storage conditions, which include keeping the medicine below 30 C and protecting it from moisture and light. Product labels generally require the medicine to be kept in its original container with the dispensing label clearly visible. Travelers should confirm all local customs and prescription requirements for the country they are entering.


Q: Is Defuzin known to cause weight gain or weight loss?

When reviewing the list of documented adverse reactions classified by regulatory bodies, weight gain or weight loss is not specifically listed among the reported side effects for Defuzin. The most commonly reported side effects relate to the skin and application site.


Q: Can Defuzin be used by people who have a history of heart problems?

Official regulatory documents list specific constraints related to liver/biliary conditions and a prohibition on taking systemic Defuzin with Statins (a common cardiac medication). However, no specific warnings or contraindications are universally listed in the regulatory documents for a general history of heart problems or cardiac events.


Q: What does the term 'pharmacovigilance' mean when discussing Defuzin?

Pharmacovigilance is the official process used by regulatory bodies to continuously monitor the safety of a medicine after it has been approved for public use. This includes collecting and evaluating reports of potential side effects or adverse reactions throughout the entire lifecycle of the drug.


Q: Are there any known issues with alcohol consumption and Defuzin?

Official product information does not list alcohol as a formal interaction or constraint for either the systemic or topical forms. Public health guidance for the topical and ophthalmic forms states that there is no known issue with alcohol consumption.


Q: What are the potential signs of an allergic reaction to Defuzin?

Official documents describe rare but serious allergic reactions, which fall under the classification of hypersensitivity. These documented signs include the appearance of urticaria (hives or itchy skin welts) and angioedema, which is swelling of the face, lips, tongue, or throat.


Q: How should a person prepare if they need to undergo surgery while taking Defuzin?

The most critical preparation mentioned in official documents relates to drug interactions. Regulatory guidance indicates that if a patient is using the systemic form alongside a Statin medication, the statin is officially mandated to be discontinued, and not resumed until mathbf7 days after the final dose of Defuzin.


Q: Does Defuzin have any described impact on fertility?

Official information regarding Defuzin (Fusidic Acid) states there is no evidence documented in the regulatory literature to suggest that using the medication reduces fertility in either men or women.


Q: Can Defuzin be obtained without a prescription in any country?

Defuzin, whose active ingredient is Fusidic Acid, is classified by major governmental drug agencies as a prescription-only medicine. This means it requires an authorized prescription to be dispensed.


Q: Is Defuzin a controlled substance?

Defuzin is an antibiotic used to control bacterial infections. According to regulatory classifications in major jurisdictions, it is not listed as a controlled substance that carries restrictions related to potential abuse or dependence.


Q: Do official sources describe any connection between Defuzin and vision changes?

Official product information for the ophthalmic (eye drop) formulation lists blurred vision as a potential undesirable effect, classified as uncommon (affecting up to 1 in 100 people). This temporary effect is typically observed immediately after the eye drops are applied.


Q: Why is genetic testing sometimes mentioned in relation to Defuzin?

The regulatory label for the systemic tablet formulation includes a formal contraindication for patients with Specific Hereditary Metabolic Disorders due to the excipients (non-active ingredients). The need to confirm the presence of these hereditary conditions may be why genetic information is sometimes relevant to determining patient eligibility.


Q: Are there specific official guidelines for what constitutes an 'overdose' of Defuzin?

Official documents for the topically applied forms of Defuzin generally state that no specific information concerning the symptoms or signs of overdose is available. This is based on the low amount of medicine absorbed into the body when used on the skin or in the eye.


Q: Is Defuzin safe for use in patients with diabetes?

Official warnings and precautions listed in the regulatory documents focus on conditions such as hepatic (liver) dysfunction and the co-administration of Statins. Diabetes is not listed as a specific contraindication or a condition that formally requires a dosage adjustment for Defuzin.


Q: How does the FDA/EMA categorize the risk profile of Defuzin?

The risk profile is described differently depending on the formulation. Topical and ophthalmic forms have a low risk profile due to negligible systemic exposure (minimal absorption into the body). Systemic forms carry more specific constraints, including caution for hepatic impairment and a formal contraindication when co-administered with Statins.


Q: What is described about Defuzin's potential for misuse or dependence?

Defuzin is classified as an antibiotic intended for short-term treatment of bacterial infections. Regulatory documents do not include any warnings or information regarding a potential for drug misuse or physical dependence.


Q: What kind of studies are used to support the safety classification of Defuzin?

Official safety classifications are supported by various data sources. These include results from non-clinical (preclinical) safety studies as well as adverse reaction information gathered during short-term clinical trials. Ongoing safety is tracked through post-marketing surveillance, which is part of the overall regulatory process known as pharmacovigilance.


Q: Is there any information on how Defuzin affects ability to drive or operate machinery?

Regulatory documentation for the ophthalmic (eye drop) formulation includes a specific warning. It states that the medication may cause transient blurred vision immediately after application. Regulatory documentation indicates that caution is appropriate regarding driving or operating machinery until vision has completely cleared.


Q: Why do some people refer to Defuzin by a different name?

Defuzin is the marketing name for the active ingredient, Fusidic Acid (or Sodium Fusidate). People may refer to the medicine by its different authorized brand names that are used in various countries, such as Fucidin.


Q: Do older adults typically have different experiences with Defuzin compared to younger patients?

Official regulatory documents state that for the systemic (oral or intravenous) forms of Defuzin, no specific dosage adjustment is required for the elderly population. The severity and type of side effects documented in official studies are generally expected to be consistent with those observed in adults.


Q: What does 'contraindicated' mean in the context of Defuzin use?

The regulatory term 'contraindicated' indicates that the use of the medicine is not recommended or should be avoided under a specific set of circumstances because the risk of harm is clearly documented. For Defuzin, this includes having a known allergy (hypersensitivity) to the drug or, for systemic use, taking it at the same time as a medication in the Statin class.


Q: How is the long-term safety of Defuzin described in official documents?

Official documents caution that the prolonged or recurrent use of Defuzin is associated with certain risks, most notably the development of contact sensitisation and an increased chance of antibiotic resistance. The follow-up durations in the main clinical studies were short-term, meaning long-term effects are generally not fully established.


Q: Can Defuzin affect the results of common laboratory tests?

Regulatory warnings note a special consideration for the systemic use of Defuzin in neonates (newborns) due to a potential interaction involving bilirubin-albumin binding. Official guidelines specify that liver function monitoring is advised during systemic treatment for patients who have pre-existing hepatic (liver) impairment.

How should Defuzin be stored and disposed of?

Storage and Disposal of Defuzin (Fusidic Acid)

Official labeling defines strict conditions to maintain product stability and ensure safe handling.

Aspect Official Regulatory Requirement
Storage Temperature Store at room temperature; typically below 30 C or 25 C for specific forms.
Protection Keep the medicine away from direct light and moisture and do not freeze it.
Packaging Rules Must be stored in the original container and kept tightly closed.
Stability After Opening Topical creams and eye drops often must be discarded after 4 weeks (28 days) of first opening.
Child Safety Keep this medicine out of the sight and reach of children to prevent accidental exposure.
Disposal Do not throw away any medicines via wastewater or household waste. Dispose of unused or expired product according to local regulations, often by returning it to a pharmacy.

These mandated conditions define how the product must be stored, handled, and discarded to protect the integrity of the medication and the environment.

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

Available in countries:

Equivalent of Defuzin found in:

A-Z Index: