Fazol G

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Fazol G

Treatment option: Empeines

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 Fazol G

What is Fazol G?

Fazol G is a gynecological medication formulated as a vaginal ovule. It is a combination therapy that contains two primary active ingredients: isoconazole nitrate and glycyrrhizic acid.

Composition and Mechanism

Isoconazole nitrate is an antifungal agent belonging to the imidazole family. It works by inhibiting the synthesis of ergosterol, a vital component of fungal cell membranes. By disrupting the integrity of the membrane, it effectively limits the growth and spread of various fungal pathogens.

Glycyrrhizic acid, derived from liquorice root, is included for its soothing properties. In gynecological applications, it is used to help manage the local discomfort and irritation often associated with vaginal infections.

Clinical Applications

This medication is primarily used for the local treatment of vulvovaginal mycoses, which are fungal infections of the vaginal tract. It is specifically indicated for cases where inflammation or sensitive mucosal tissue is present. Common conditions addressed by this formulation include:

  • Vaginal candidiasis (yeast infections)
  • Mixed infections involving fungal pathogens and certain Gram-positive bacteria

By combining an antifungal agent with a soothing component, Fazol G aims to address both the underlying cause of the infection and the symptomatic irritation of the affected tissues.

What side effects are possible with Fazol G?

Possible side effects and safety information

The official safety documentation for Isoconazole ovule (Fazol G) demonstrates that possible adverse reactions are primarily localized to the area of application, consistent with minimal systemic absorption.

Adverse Reaction Classification

Adverse reactions are classified based on their frequency of occurrence as documented in clinical use and regulatory reports. These effects are grouped under categories such as General disorders and administration site conditions and Skin and subcutaneous tissue disorders.

Frequency Classification Examples of Reactions
Common Local irritation, burning sensation
Uncommon Erythema (redness), application site dryness
Frequency Not Known Itching (pruritus), pain, swelling, vesicles

Serious adverse reactions are rare, but the potential for a systemic allergic response, formally known as Hypersensitivity, is documented as a safety consideration within the drug's official profile.

Specific Safety Limitations and Populations

Specific safety statements accompany the use of this medicine. The ovule formulation includes excipients that may compromise the physical integrity of latex barrier contraceptives, such as condoms or diaphragms, potentially reducing their effectiveness. Furthermore, regulatory documents note that data are often limited or insufficient regarding the use of Isoconazole ovule during pregnancy and lactation, which necessitates specific caution. The safety profile maintains a focus on established frequencies and critical restrictions as defined in regulatory texts.

Overdose and Emergency Response

Overdose and When to Seek Help

Official Regulatory Profile and Manifestations

Fazol G (Isoconazole ovule) is a local antifungal preparation whose regulatory profile confirms a documented low rate of systemic absorption. Official regulatory documentation, informed by acute toxicity studies, indicates that no risk of acute systemic intoxication is anticipated to exist following a single topical overdose or over-application. Consequently, no specific systemic clinical manifestations or severe physiological outcomes of acute overdose are listed in official labeling. No population-specific overdose considerations for pediatric, hepatic, or renal impairment are documented.

Immediate Action Requirements

The only scenario explicitly addressed by regulators that requires immediate action is the potential for accidental oral ingestion of the ovule. Should accidental ingestion occur, individuals must immediately seek medical attention or medical advice as a necessary toxicological precaution. Management for any ensuing systemic event is officially described as symptomatic and supportive treatment. No specific antidote is listed in regulatory documentation, and no requirements for continuous hospital monitoring are mandated for this low-risk scenario. The profile is strictly defined by the negligible systemic risk.

Therapeutic Uses of Fazol G

What Fazol G Treats: Main Uses and Benefits

Fazol G (Isoconazole ovule) is primarily applied across domains where additional symptomatic support is needed for vulvovaginal candidiasis (VVC), generally known as vaginal thrush. This medication is commonly used for conditions presenting with acute episodes where localized intervention may assist in addressing fungal pathogens. It may also be part of symptomatic management in cases where infections involve associated gram-positive bacterial components, which helps contribute to easing the overall symptom load.

The medication is relevant for easing symptoms related to inflammatory or irritative states and those that interfere with daily functioning. Key manifestations it helps manage include severe vulval itching (pruritus), localized burning sensation, redness, and the abnormal discharge typical of VVC. Furthermore, it may assist with managing secondary functional strain such as dysuria (painful urination) or dyspareunia (painful intercourse) when linked to the local infection.

The application of Fazol G supports symptomatic relief and assists with maintaining functional stability. It is intended for situations where multiple symptoms occur together and create noticeable physical strain.


Quick Fact: Relief for Inflammatory Discomfort

The treatment is relevant in contexts marked by increased discomfort and tension, providing support that helps ease the overall burden of symptoms associated with acute inflammation and irritation.

Eligibility and Restrictions for Use

The eligibility for Fazol G (Isoconazole ovule) is strictly defined by official regulatory documents, which stipulate clear rules for who can and cannot use the medicine.

The use of Fazol G is absolutely contraindicated in patients with a documented history of hypersensitivity or allergic reaction to the active ingredient, Isoconazole nitrate, or to any of the ovule's excipients. This is the primary non-eligibility rule established by official labeling.

Eligibility is established primarily for the adult female population, aligning with the approved indication for vulvovaginal candidiasis. Consistent with the route of administration, use is not established or recommended in pediatric or pre-pubertal patients.

Special patient statuses require conditional use assessments:

Population Status Regulatory Eligibility Status
Pregnancy Use is conditional; data indicates no teratogenic risk in humans, but caution is advised, particularly in the first trimester.
Lactation Use is generally permitted, as regulatory documents note effective quantities are unlikely to be secreted in breast milk.

As a final rule, due to the minimal systemic absorption from the topical route, official labeling does not define specific restrictions for patients with severe renal or hepatic impairment.

What should I know about interactions with other medicines?

The official documentation for Fazol G (Isoconazole nitrate ovule) addresses its interaction profile predominantly through a physical constraint related to the ovule’s vehicle and a risk assessment based on its route of administration.

Category Official Regulatory Statement
Medicinal product categories with documented interactions None documented for systemic drug-drug interactions.
Specific interacting medicines (if explicitly listed) None explicitly listed for systemic pharmacokinetic or pharmacodynamic interactions.
Mechanistic basis of interactions (only if stated in label) Physical/Device Compatibility: The excipients (fatty base) of the ovule physically damage or weaken the material of latex or rubber products.

Interaction Classifications (High-Level)

Classification Official Regulatory Statement
Interaction severity classification Not formally classified for systemic interactions; physical interaction is typically labeled as a restriction for concurrent use of the device/product.
Regulatory basis Regulatory data indicates that minimal systemic absorption (typically reported as less than 5% of the dose) makes the risk of systemic pharmacokinetic drug-drug interactions negligible for this topical formulation.
Interaction-context constraints Co-administration with latex/rubber barrier contraceptives is restricted due to the ovule's excipient base compromising the material integrity and effectiveness of the device. This restriction applies for the duration of treatment and a short period following cessation.

Resulting Interaction Structure

  • The ovule's suppository base may compromise the physical material of certain latex and rubber products.
  • Concurrent use with latex condoms or vaginal diaphragms is officially restricted because of the risk of material damage and subsequent failure of the device.
  • Regulatory documents do not document significant pharmacokinetic interactions (e.g., related to CYP enzymes or transporters) with systemically administered medicines due to the minimal systemic absorption of Isoconazole from the ovule.

The overall interaction structure for Fazol G is defined by its localized action, resulting in the absence of formal warnings for systemic drug-drug interactions in regulatory documents. The sole documented restriction is a physical compatibility issue concerning the ovule's excipient base and the integrity of barrier methods made of latex or rubber, classifying the interaction as a topical/device constraint.

Mechanism of Action

Targeting Fungal Cell Structure by Enzyme Inhibition

The core mechanism of Isoconazole (Fazol G) focuses on interrupting the biological synthesis of ergosterol, an essential component of the fungal cell membrane. The drug achieves this by inhibiting the enzyme Lanosterol 14alpha-demethylase (CYP51). This molecular action blocks a critical step in the fungal metabolic pathway, leading to the rapid depletion of the structural component and the build-up of toxic sterol intermediates within the pathogen's cell.


Destabilizing the Pathogen's Protective Membrane

The direct consequence of the biochemical disruption is a profound change in the fungal cell membrane's structure. The incorporation of abnormal sterols, combined with the lack of ergosterol, compromises the membrane's integrity, significantly increasing its permeability and fragility. This physiological failure causes the cell to leak essential contents and ultimately results in the inhibition of microbial proliferation (fungistatic effect) or leads to fungal cell lysis (fungicidal effect) at the local application site.


Secondary Antimicrobial Spectrum

In addition to its primary antifungal action, the drug's mechanism extends to provide a secondary antimicrobial effect against specific Gram-positive bacteria. This complementary activity, which also involves membrane disruption processes, results in a broadened local anti-microbial physiological effect at the site of application.

Dosage and Administration Information

How to Use Fazol G: Official Administration Guidelines

Fazol G is a medicine strictly governed by its official administration protocol, which focuses on localized, high-concentration delivery of the active substance. The product is supplied as an ovule intended for intravaginal administration only and is explicitly not for oral ingestion.

Dosing and Regimen

The most common administration model involves a single dose of one 600 mg ovule, establishing a brief, one-day course of treatment. Some regional labels may describe an alternative regimen using a 100 mg vaginal tablet inserted once daily for a six-day continuous course. The single-dose method is designed to provide a rapid, concentrated dose of the medicine locally.

Administration Detail Official Instruction
Route of Administration Exclusively Intravaginal (Topical)
Standard Dosing Single dose of one 600 mg ovule
Dosing Timing Typically in the evening, just before bedtime
Procedural Position Lying down, inserted deep into the vagina

Administration Timing and Restrictions

For optimal local retention, the ovule should be inserted deep into the vagina while the patient is in a lying position, generally in the evening before going to sleep. This timing ensures the medication is held in place for an extended period. A key administration constraint is that treatment is not to be carried out during menstruation, as this may interfere with the intended therapeutic effect. Furthermore, patients are instructed to avoid using tampons, douches, or spermicides concurrently during the treatment period. For multi-dose regimens, a missed dose should be used as soon as possible, then the regular schedule resumed, without using a double dose.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Fazol G (Isoconazole Ovule)


Evidence Base for Acute Vulvovaginal Candidiasis (VVC)

The primary body of research for Fazol G, and its active ingredient Isoconazole, comes from Randomized Controlled Trials (RCTs). These short-term clinical trials were used in research exploring how symptoms change over time for acute vulvovaginal candidiasis, commonly known as vaginal thrush. Researchers included adult women with confirmed yeast infections in studies that typically compared the ovule to an inactive substitute (placebo) or to other topical antifungal treatments. The key objectives of these studies were to monitor Clinical Cure Rate (outcomes related to local signs like itching and discharge) and Mycological Cure Rate (laboratory findings related to the presence of the fungus).

Specifically, trials described patterns showing that the active ingredient, as part of the azole antifungal class, was associated with observed short-term microbiological and functional outcomes in comparison to inactive treatments over defined time intervals. However, the majority of the reported outcomes were short-term, meaning the initial findings describe group patterns, not personal outcomes.


Studies Addressing Broad-Spectrum Localized Infections

Isoconazole was evaluated in research examining its activity against germs beyond just fungi. This characteristic was studied for in Laboratory (In Vitro) Studies, where researchers monitored the active ingredient’s potential to influence specific bacterial strains in a controlled environment. This research, along with some controlled trials, explores outcomes related to conditions where both a fungal infection and a bacterial component may be present. The findings describe patterns observed in these studies, indicating that the active ingredient was associated with antimicrobial activity against specific organisms.

There is limited information from dedicated large-scale RCTs specifically using the ovule formulation to quantify the relevance of this dual activity in mixed vaginal infections. The evidence relies heavily on laboratory data and clinical observations extrapolated from the active ingredient's use in other settings, meaning that certainty remains low for the clinical relevance of this dual activity in the vaginal context.


Long-Term Study and Follow-up Durations

The evidence primarily focuses on assessing outcomes reflecting daily functioning during the acute treatment phase. The longest observation periods in the core regulatory studies typically extend only up to four to eight weeks following the start of treatment. Long-term effects are not fully established; there is limited information describing the durability of the response or whether the treatment alters the long-term risk of recurrence beyond a few months.


Research in Specific and Underserved Populations

Studies have monitored specific groups, such as pregnant women, where the use of topical azoles was evaluated in a controlled setting. The findings in this specific population were observed in some studies, but overall, certainty remains low for these specific subgroups. Data for certain groups remain insufficient, especially for patients with recurrent VVC or those with significant underlying health conditions like unmanaged diabetes. The short-term findings from the general population research do not fully describe outcomes for individuals in these high-risk groups.


Consistency, Limitations, and Research Gaps

For uncomplicated VVC, the findings describing patterns observed in the studies are generally consistent regarding short-term symptom changes and mycological outcomes when compared to placebo. However, research limitations apply, including limited follow-up durations and a lack of comparative evidence against all currently available treatments. Additionally, there is uncertainty regarding the effectiveness against increasingly reported non-albicans Candida species.

Key Studies & References

  1. Diagnosis and treatment of vulvovaginal candidiasis
  2. Management of recurrent vulvovaginal candidosis: Narrative review of the literature and European expert panel opinion

Frequently Asked Questions (FAQ)

Common questions about Fazol G (FAQ)

Q: Can Fazol G be taken by people who have diabetes?

A: Official product information indicates that people with certain underlying health conditions, such as diabetes, recurrent infections, or conditions that weaken the immune system, may require specific consideration. In these cases, consultation with a healthcare provider is generally necessary, as the appropriateness of the medication is determined by a healthcare professional's assessment.


Q: Is Fazol G a type of antibiotic or an antiviral medicine?

A: Fazol G is officially classified as an antifungal medication. It belongs to the imidazole derivative class and is primarily designed to treat infections caused by yeast and mold. It is not classified as a typical antibiotic for bacterial infections or an antiviral medicine.


Q: How common are the mild side effects reported with Fazol G?

A: According to official product documents, the most commonly reported adverse reactions are local effects at the application site. These include mild stinging, redness, itching, burning sensation, or general irritation. These localized reactions are consistent with the ovule’s function.


Q: What are the major medical conditions that prevent someone from using Fazol G?

A: The primary restriction is established for safety against severe reactions. The medicine is formally contraindicated for use in individuals with a known hypersensitivity or documented allergy to the active substance, Isoconazole, or any of the other non-medicinal ingredients in the ovule. No other major systemic diseases are listed as absolute contraindications in the regulatory documents.


Q: Are there any long-term side effects associated with Fazol G use?

A: Official information indicates that systemic side effects are very rare due to the minimal absorption of Fazol G into the bloodstream when used topically. Localized side effects, which are the most common, are generally transient. Because the drug is intended for acute (short-term) treatment, long-term safety data are not extensively documented in the product label.


Q: How long does it usually take to see the full benefit or effect of Fazol G?

A: Studies and official information indicate that relief from symptoms, such as itching and irritation, can typically be expected to begin within a few days of starting treatment. If symptoms do not improve after the expected duration, or if they worsen after completing the full course, seeking evaluation by a healthcare professional is generally advised.


Q: Does Fazol G have a black box warning or similar safety alert?

A: The approved regulatory labeling for Fazol G does not include a Boxed Warning, often called a 'Black Box' warning. This type of caution is generally reserved for medications with serious, life-threatening risks that are typically absorbed systemically.


Q: Is it true that Fazol G can cause changes in body weight?

A: Fazol G is an intravaginal medication intended for localized treatment. Because the drug is absorbed only minimally into the overall bloodstream, systemic side effects like changes in body weight are considered very rare according to regulatory documents.


Q: Can Fazol G affect my sleep patterns or cause insomnia?

A: According to official product information, systemic side effects that could affect central nervous system functions, such as sleep patterns or insomnia, are very rare. This is due to the minimal systemic absorption of the active ingredient from the local application site.


Q: Do the side effects of Fazol G typically go away after a few weeks?

A: Mild to moderate local side effects are generally considered transient. Official information indicates that these reactions usually disappear shortly after the medication course is finished. If any reaction persists or causes concern, consulting a healthcare professional is recommended.


Q: Can Fazol G cause changes in mood, anxiety, or depression?

A: As a topical agent with minimal systemic absorption, Fazol G is not typically associated with changes in mood, anxiety, or depression. Official documentation indicates that systemic side effects affecting mental health are very rare.


Q: Are there any age restrictions for who can take Fazol G?

A: Regulatory documents indicate that the use of Fazol G is not established in the pediatric or pre-pubertal population. For older adults (geriatric patients), official information suggests that no different dosing regimen is typically required compared to the general adult female population.


Q: Is Fazol G known to cause nausea or stomach upset?

A: Systemic side effects, which include issues like nausea or stomach upset (gastrointestinal disturbances), are classified as very rare for Fazol G. This safety profile is consistent with the product's design for local action and minimal absorption into the bloodstream.


Q: Is Fazol G considered a controlled substance by the government?

A: Fazol G (Isoconazole) is classified as an anti-infective and antifungal drug. It is not designated as a controlled substance by government regulatory agencies.


Q: Does Fazol G affect my ability to drive or operate machinery?

A: According to official regulatory documents, Fazol G generally does not affect a person's ability to drive or operate machinery. This is expected due to the local nature of the treatment and minimal systemic absorption.


Q: Can people with asthma take Fazol G?

A: There is no specific warning or caution against the use of Fazol G in official product information solely for people with asthma. However, it is standard practice to share a history of hypersensitivity or allergic reactions with the prescribing healthcare professional.


Q: Does Fazol G cause withdrawal symptoms if I stop taking it suddenly?

A: The regulatory profile for Fazol G does not include information suggesting the development of withdrawal symptoms when the medication is stopped at the end of the treatment course. This is consistent with its primary purpose as a localized, short-term treatment.

How should Fazol G be stored and disposed of?

How to Store and Dispose of Fazol G (Isoconazole Ovule)

The official regulatory labeling for Fazol G mandates specific storage and disposal requirements to preserve the ovule's physical integrity and ensure safety.


Official Storage Conditions

Condition Requirement
Temperature Store below 30 C (86 F); Do not freeze and keep away from excessive heat.
Protection Keep in the original container to protect from moisture and light.
Safety The medicine must be kept out of the sight and reach of children.

Handling and Disposal

The ovule is intended for immediate use. Unused or expired Fazol G must be discarded safely according to local pharmaceutical waste disposal guidelines. The product must not be flushed down the toilet or poured into a drain unless specific instruction from a regulatory body is provided.

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

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