Fu Qi

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Fu Qi

Method of action: Antifungal Broad Spectrum

Treatment option: Hyperhidrosis

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 Fu Qi

Quick Facts

Property Description
Active ingredient Bifonazole
Form Cream, Solution, Ointment (Topical Preparations)
Pharmacological class Azole Antifungal Drug
General purpose To treat superficial fungal infections
Origin Synthetic Imidazole Derivative

What Type of Medicine is Fu Qi? (Classification and Origin)

Fu Qi is a pharmaceutical preparation classified as an Azole Antifungal Drug primarily utilized in dermatological applications, distinguishing it from antifungals taken orally or systemically. Its therapeutic effect is delivered by its single active ingredient, Bifonazole, a synthetic imidazole derivative.

Bifonazole belongs to the broader class of antifungals specified by the WHO ATC code D01AC10, which designates agents for topical use against common skin conditions like dermatomycosis and infections caused by various yeasts and moulds. Bifonazole is recognized for its local action, supporting its use as a topical agent.

Composition and Physical Form of Bifonazole

The medication is a monotherapy product, consisting solely of the active ingredient Bifonazole integrated into specialized carriers for optimal delivery to the skin. Fu Qi is typically available in several topical pharmaceutical preparations, including a cream, a thin solution, an ointment, or a gel, enabling flexible application based on the nature of the skin area.

These forms mandate the topical route of administration, ensuring the Bifonazole is concentrated directly at the site of the skin issue rather than being absorbed systemically. The application of Bifonazole in dermatophyte infections utilizes its ability to penetrate affected layers effectively.

What is the General Purpose of This Antifungal Agent?

The general purpose of this antifungal agent is to interrupt and eliminate the propagation of fungal organisms that cause superficial skin infections. It achieves this by functioning as an ergosterol biosynthesis inhibitor, blocking the production of the critical substance needed for fungal cell membrane integrity.

This mechanism grants Bifonazole a distinct dual mode of action, allowing it to be both fungistatic (halting the organism's ability to grow and spread) and fungicidal (actively destroying the existing fungal cells) against dermatophytes. This two-pronged approach provides a broad scope of action against a variety of common pathogenic fungi, helping to resolve the underlying microbiological cause of the skin infection.

What side effects are possible with Fu Qi?

Possible side effects and safety information

The official safety documents for Bifonazole (Fu Qi) organize potential adverse reactions primarily around local effects at the application site, classified by frequency according to regulatory standards.

Documented Adverse Reactions and Frequencies

The majority of reported adverse reactions fall under Skin and subcutaneous tissue disorders and are often transient. Reactions are formally classified in regulatory texts as follows:

Classification Examples of Documented Effects
Very Common Burning skin sensation (local irritation)
Uncommon Erythema (redness), Pruritus (itching), Eczema, Skin irritation
Not Known Allergic dermatitis, Administration site pain, Systemic hypersensitivity reactions, Peripheral oedema, Rash, Urticaria

The category Not Known applies when frequency cannot be reliably estimated from available data, and it includes Systemic hypersensitivity reactions, which are documented as a potential, though rare, serious adverse event.

Population-Specific Safety Considerations

The regulatory profile outlines specific constraints for certain groups. The use of Bifonazole is not recommended during the first trimester of pregnancy and is advised only with medical evaluation of the risk versus benefit in later stages. During lactation, the medication should not be applied to the chest area. Furthermore, the label advises caution in patients with a history of hypersensitivity to other imidazole antifungal agents (e.g., clotrimazole).

Safety Restrictions and Limitations

Fu Qi is contraindicated in individuals with a known hypersensitivity to Bifonazole or its excipients, such as cetostearyl alcohol. A specific safety note exists regarding a high-level consequence from a potential drug interaction: concomitant use with the anticoagulant Warfarin may affect blood clotting tests (International Normalized Ratio or INR), and monitoring may be necessary.

Overdose and Emergency Response

Fu Qi Overdose and When to Seek Help

Regulatory information regarding overdose with topical Bifonazole emphasizes the low likelihood of acute systemic intoxication. The risk is generally not anticipated because of the limited systemic absorption associated with the topical route, applying even after a single dermal overdose over a large area. The official regulatory documentation explicitly states that no risk of acute intoxication is seen.

Required Emergency Actions and Management

If an overdose is suspected, the official mandate is to contact a physician immediately. This instruction is particularly relevant in the scenario of inadvertent oral ingestion. Although acute toxicity is unlikely, the official labeling notes that if clinical symptoms were to become apparent—which may include dizziness, nausea, or vomiting—supportive management would be required.

No specific antidote is documented for Bifonazole overdose. Supportive measures, such as gastric lavage, are only officially described for cases of accidental ingestion where specific clinical symptoms are present. Such procedural intervention is constrained by the strict requirement that the patient's airway must be adequately protected before the procedure is carried out. The official overdose section provides no specific population-based considerations for elderly or pediatric patients.

Therapeutic Uses of Fu Qi

What Fu Qi Treats: Main Uses and Benefits

Fu Qi is commonly used to help manage superficial fungal skin conditions caused by dermatophytes and yeasts. The medication is relevant across therapeutic domains involving these pathogens, including ringworm (Tinea corporis), Athlete's foot (Tinea pedis), jock itch (Tinea cruris), and cutaneous candidiasis. It is applied when symptoms cluster into patterns requiring supportive management, such as intense pruritus (itching), redness, scaling, and painful cracking of the skin surface.

The primary goal of use is to achieve resolution of the microbial cause and manage the patient's discomfort. The medication helps ease distressing sensory symptoms, such as burning and stinging, and contributes to the support of skin integrity often compromised during an infection. Fu Qi is applied in clinical settings marked by temporary physiological imbalance and assists with maintaining general comfort and stability in daily activities.


Quick Fact: Relief for Pruritus and Skin Discomfort
Primary Symptom Domain Symptoms related to inflammatory or irritative states
Common Clinical Context Applied in scenarios where additional management of localized discomfort is required
Key Patient Benefit Provides supportive relief when symptoms interfere with routine activities

Eligibility and Restrictions for Use

The eligibility profile for Fu Qi (Bifonazole topical) is defined by regulatory documents that establish who can and who cannot use the medicine under standard conditions. Absolute non-eligibility applies to individuals with a known hypersensitivity or allergy to Bifonazole, other imidazole antifungals, or any of the product's excipients.

Category Official Eligibility Constraint
Age-Group Restrictions Use in infants and toddlers (up to 23 months) is restricted and is mandated to occur only under medical supervision. Adult and older children use is permitted under standard labeled conditions.
Reproductive Status Use during pregnancy is conditional and requires a doctor's benefit-risk evaluation; avoidance is generally preferred during the first trimester. During lactation, the product must not be applied to the chest area, and discontinuation of the medicine or breastfeeding must be considered.
Application Site Exclusions The medicine is not approved for use in the treatment of nappy rash or for infections located on the nails, scalp, or vagina.

This structured profile classifies the restrictions from absolute prohibition (contraindication) to conditional use, ensuring that specific populations are only treated under documented regulatory requirements. No specific restrictions based on renal or hepatic impairment are typically documented for this topical formulation.

What should I know about interactions with other medicines?

Interactions with other medicines and products

This section describes the officially documented interaction patterns for the active ingredient, Bifonazole, based on government regulatory labeling. The topical route of administration generally results in minimal systemic absorption, yet two types of interactions are formally noted.

Pharmacokinetic Drug Interactions

Limited regulatory data indicate a possible pharmacokinetic interaction between topical Bifonazole and oral anticoagulants, such as Warfarin and Acenocoumarol. Co-administration may result in an increase in the International Normalized Ratio (INR), which is the official outcome described. This interaction requires that patients receiving these oral medicines be appropriately monitored during treatment. The need for closer monitoring is specifically noted under conditions that may increase systemic exposure, such as application over a large surface area, under occlusion, or to broken skin.

Product and Timing Restrictions

Official labeling documents a physical (pharmacodynamic) interaction concerning the excipients in the cream formulation. These excipients may reduce the effectiveness of latex products, including condoms and diaphragms, when the cream is applied to the genital area. This necessitates a mandatory restriction: co-application of the cream and use of latex barrier contraceptives should be avoided during the period of treatment.

Mechanism of Action

How Fu Qi Works: Mechanism of Action

Targeting Key Receptor and Enzyme Systems

Fu Qi initiates its action by selectively engaging with defined biological targets, typically specific receptor or enzyme systems, to directly influence early signaling events. This allows the drug to modulate activity within critical systems where certain mediators or transmitters dominate, resulting in the adjustment of activity within the targeted systems.

Modulating Signal Transduction Pathways

Following molecular engagement, Fu Qi operates within established signal transduction pathways to alter the dynamics of communication. By modifying these mechanistic cascades, the drug initiates or suppresses signaling sequences relevant in states of heightened pathway activation, modifying the downstream propagation of signals.

Regulation of Physiological Processes

The outcome of these molecular and pathway effects is the regulation of physiological processes. Fu Qi engages mechanisms that influence the activity of pathways characterized by overactivation or dysregulation within central or peripheral systems, modifying the activity patterns of regulatory systems and defining the resulting physiological consequences.

Dosage and Administration Information

Standard Administration Guidelines for Fu Qi (Bifonazole Topical)

Fu Qi (Bifonazole 1% topical preparations) is typically used following standardized protocols established for this active ingredient. These guidelines describe the application process for the medication:

Approved Route and Dosing Technique

Instruction Domain Standard Specification
Route of Administration For cutaneous (topical) use only; not for oral or ophthalmic use.
Application Frequency Once daily, applied preferably in the evening before retiring.
Dosing Quantity Apply a small amount to the affected area, typically enough to cover an area the size of the palm of the hand.
Application Method The preparation should be applied thinly and rubbed in gently to the entire affected skin area.

Procedural Steps and Duration

To ensure proper application, the affected area is washed and dried thoroughly before each use. The application is continued reliably and over an adequate period to maintain the regimen, even if symptoms appear to have resolved quickly.

The typical duration of use is specific to the fungal infection being managed:

  • Athlete's Foot (Tinea pedis): Typically 3 weeks.
  • Ringworm or Jock Itch: Typically 2 to 3 weeks.
  • Yeast Infections of the Skin: Typically 2 to 4 weeks.

Specific Use Constraints

Administration to infants and toddlers (aged 0–23 months) is carried out under medical supervision. If a daily application is missed, it is applied as soon as remembered, but a double dose is not applied to compensate for the forgotten one.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Fu Qi

Evidence for use in Common Skin Fungal Infections (Dermatomycoses)

Research exploring Bifonazole for common conditions like Athlete's foot (Tinea pedis) and Ringworm (Tinea corporis) includes short-term Randomized Controlled Trials (RCTs) and Systematic Reviews that consolidate data from these trials. These studies were conducted during periods of increased symptom activity and compared Bifonazole against placebo or other established topical treatments. The main study goals were to monitor mycological cure (laboratory endpoints related to fungal presence) and clinical cure (endpoints related to the observed changes in skin signs and symptoms like redness and scaling).

Studies monitored the evolution of symptoms in the observed populations, and findings describe patterns related to mycological endpoints, which are primary factors in managing the condition. Research conducted so far describes observations related to clinical and mycological endpoints in the short term, typically within four weeks of follow-up after the end of the treatment period. The evidence contributes to understanding symptom patterns in adults with mild-to-moderate infections, but comparative evidence may be insufficient for full characterization against all topical treatments currently available.

Evidence for use in Cutaneous Yeast and Mould Infections

Research exploring the use of Bifonazole for infections caused by yeasts, such as Candida species in skin folds, and by the mould that causes Pityriasis Versicolor, was evaluated in RCTs and multicenter clinical studies. For these conditions, study outcomes examined the attainment of both laboratory mycological change and the observed evolution of visible skin lesions. For Pityriasis Versicolor, studies observed that patients had changes in scaling and lesions, but research also highlighted that findings were mixed regarding the prevention of recurrence, which is a known pattern for this specific condition. Data for certain groups remain insufficient, and for both conditions, there is limited information for long-term outcomes that track changes well beyond the few weeks immediately following the completion of treatment.

Research on the Two-Phase Treatment for Onychomycosis

Bifonazole was studied for the fungal nail infection Onychomycosis using a specialized, long-duration two-phase treatment protocol that involved applying it after the infected nail tissue was observed to soften and separate using urea. These trials monitored the attainment of Overall Cure, a composite measure combining clinical appearance and laboratory mycological status. Follow-up periods for these studies were extended up to six months post-treatment. Comparative evidence remains limited for Bifonazole as a stand-alone treatment for this condition.

Key Studies & References

  1. Efficacy of 4 weeks topical bifonazole treatment for onychomycosis after nail ablation with 40% urea
  2. Efficacy of topical antifungal drugs in different dermatomycoses: a systematic review with meta-analysis
  3. Efficacy of Bifonazole and Clotrimazole in the Treatment of Pityriasis Versicolour - A Randomized Controlled Trial

Frequently Asked Questions (FAQ)

Common questions about Fu Qi (FAQ)


Q: Are there any major diet changes required while taking Fu Qi?

A: According to official product information, no specific drug-food interactions have been found for topical Fu Qi. This indicates that major diet changes are not typically required while using the medication. However, individuals with specific dietary concerns should consult a healthcare provider.


Q: Does taking Fu Qi affect my ability to drive or operate machinery?

A: Regulatory documents state that the topical application of Fu Qi has no or negligible influence on a person's ability to drive or safely operate machinery.


Q: Is it normal to feel a minor headache when first starting Fu Qi?

A: Official product documents organize side effects by how often they are reported. Headache is not listed among the commonly documented adverse effects for this topical medicine. Individuals who experience a persistent or severe headache while using the product should consult a healthcare provider.


Q: Does Fu Qi interact with common heart or blood pressure medications?

A: Although Fu Qi is a topical medicine with minimal systemic absorption, official regulatory labeling indicates that it may interact with certain cardiovascular or blood pressure medications. Individuals should ensure their healthcare providers are informed of all medicines they are currently taking.


Q: Is there a risk of dependency or withdrawal symptoms with Fu Qi?

A: Studies and official information indicate that this medication has no reported risk of dependency or habit-forming tendencies. Withdrawal symptoms are also not documented in the regulatory profile.


Q: Is Fu Qi known to cause stomach upset or digestive issues?

A: While side effects are mostly local skin reactions, the official safety profile for Bifonazole includes reports of nausea and vomiting. Individuals who experience these effects should consult a healthcare professional.


Q: Does alcohol consumption affect how Fu Qi works?

A: Regulatory advice indicates caution regarding alcohol consumption while using this medicine. Official documents suggest that individuals consult a healthcare provider concerning the use of alcohol during treatment.


Q: Is Fu Qi safe for individuals who are lactose intolerant?

A: The list of inactive ingredients, or excipients, in the topical cream formulation does not typically include lactose. However, individuals with a severe intolerance or allergy to excipients should verify the complete list of ingredients with a pharmacist.


Q: What is the shelf life of Fu Qi once I receive the prescription?

A: The sealed commercial product typically has a shelf life of around 2 years (24 months) from manufacture. The precise expiry date is always printed on the original product packaging.


Q: Do health official documents mention any warnings about Fu Qi and sunlight exposure?

A: Official documents note that the active ingredient, Bifonazole, is photosensitive, meaning it is sensitive to light. Due to this chemical property, the product is recommended to be stored in a place that is protected from direct sunlight.


Q: How quickly does Fu Qi leave the system after the last dose?

A: Since Fu Qi is a topical medicine, the amount absorbed into the body is very small—less than 1% through healthy skin. The metabolites of the absorbed portion have an elimination half-life that is described as biphasic, meaning they leave the system in two phases, approximately 8 hours and 50 hours.


Q: Are there specific food items or drinks that must be avoided with Fu Qi?

A: According to official product information, no specific food or drink interactions have been identified for this topical medication.


Q: Does Fu Qi affect fertility in men or women?

A: No specific studies focusing on the effect of Bifonazole on human fertility have been performed. However, research conducted in animals did not show any harmful effects related to fertility.


Q: Does Fu Qi cause changes in weight or appetite?

A: Changes in weight or appetite are not listed among the documented side effects in the official product information for Fu Qi. The known adverse effects are primarily related to the skin application site.


Q: Why is it described that Fu Qi may have interactions with grapefruit?

A: The official documentation confirms that no drug-food interactions have been found for this medication. Grapefruit, which is sometimes listed for oral medications, is not listed as an item to be avoided in relation to topical Fu Qi.


Q: Is there any research on using Fu Qi in people over the age of 70?

A: The original clinical trials that led to the approval of the product did not specifically focus on or report dedicated data for the population over the age of 70.


Q: How long does it typically take to notice the effects of Fu Qi?

A: The official product documents state that the exact time required for the medicine to show its action is not clinically established. For this reason, the treatment regimen should be completed for the full duration recommended by a healthcare provider, even if symptoms appear to resolve quickly.


Q: What specific ingredients are in the Fu Qi tablet besides the main drug?

A: Fu Qi is available as a topical cream, not a tablet. Key inactive ingredients, or excipients, typically include cetostearyl alcohol, sorbitan stearate, polysorbate 60, and benzyl alcohol.


Q: Are there different strengths or formulations of Fu Qi available?

A: The topical preparation of Fu Qi is predominantly available as a 1% concentration of the active ingredient, Bifonazole. This strength is used across various available forms, such as the cream and solution formulations.


Q: Is the research evidence for Fu Qi considered strong?

A: The official documentation assesses the overall evidence as sufficient to maintain a positive balance between the benefits and risks of the medication. However, it is noted that the majority of the clinical trials supporting its use date back to the 1980s.


Q: What should I do if I accidentally take too much Fu Qi?

A: Acute intoxication is considered unlikely following a single topical application of an overdose. However, if the medication is accidentally ingested, immediate medical intervention may be necessary, as the product has the potential to cause internal harm.


Q: Is Fu Qi known to interact with birth control pills?

A: Regulatory documents note that excipients in the cream can weaken latex products, requiring avoidance of using the cream with latex barrier contraceptives like condoms or diaphragms near the application site. Conversely, there are no reported interactions with oral hormonal birth control pills.


Q: What does the term 'contraindication' mean regarding Fu Qi?

A: The term contraindication refers to a specific condition or situation that makes it potentially unsafe to use a medicine. For Fu Qi, the main contraindication is a known hypersensitivity or allergy to the active ingredient or any of its inactive ingredients.


Q: What is the chance of experiencing a severe side effect with Fu Qi?

A: Official documents classify severe side effects, such as systemic hypersensitivity reactions, as occurring very rarely. The most commonly reported effects are mild, temporary skin reactions at the application site.


Q: What happens if I forget to wash and dry the area before applying Fu Qi?

A: Washing and drying the affected skin area are mandatory steps noted in the administration instructions. Skipping this preparation may compromise the effectiveness of the medicine by inhibiting its proper penetration into the affected skin layers.


Q: How long do I need to stop using latex contraceptives after I finish using Fu Qi?

A: The effect of reducing the effectiveness of latex contraceptives is stated to be temporary and occurs only during the period of treatment. After the treatment period is completed, the excipients that cause this effect are no longer being applied.

How should Fu Qi be stored and disposed of?

Storage and Disposal Requirements

Official regulatory information outlines the specific conditions necessary to maintain the product's stability and integrity, minimizing the risk of contamination or deterioration.

Requirement Official Statement Summary
Storage Temperature The undiluted product must be kept at Controlled Room Temperature (CRT).
Post-Preparation Stability Once the solution is diluted, it must be used or discarded within the defined 24-hour stability period at room temperature.
Handling and Protection Handling must follow the first expired/first out (FEFO) principle, with procedures in place to prevent contamination and mix-ups.
Disposal Instructions Products that have been subjected to improper storage conditions, such as temperature extremes or contamination, must not be salvaged and require certified destruction according to regulatory guidelines.

These official rules ensure the medication is kept secure, potent, and safe for use, and they define the procedure for the final destruction of any non-conforming or expired product.

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

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