ПРИМАФУНГИН

Quick links to important sections

ПРИМАФУНГИН

Selected form

Medically reviewed

Marina Burgos

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 ПРИМАФУНГИН

Quick Facts Overview

Property Description
Active ingredient Natamycin (INN)
Form Vaginal Suppositories
Pharmacological class Polyene Macrolide Antibiotic / Antifungal Agent
Common Use Type Local Anti-Fungal Therapy
Origin Naturally derived

What Type of Medicine is ПРИМАФУНГИН?

ПРИМАФУНГИН (Primafungin) is a medicinal preparation primarily known as a highly targeted Antifungal Agent. It is classified within the group of polyene macrolide antibiotics, meaning its action is specifically directed toward eliminating fungi and yeasts. The overarching purpose of this medicine is to address and resolve issues caused by susceptible fungal pathogens, such as Candida species, establishing a foundation for local therapeutic management. Its active substance, Natamycin, is recognized on the Model List of Essential Medicines due to its known efficacy against such pathogens.

The Composition: Active Ingredient, Form, and Origin

The preparation is a monoproduct, containing only one active component: Natamycin. This substance is naturally derived, produced through the fermentation of the bacterium Streptomyces natalensis. ПРИМАФУНГИН is typically provided as Vaginal Suppositories, a solid dosage form intended for local intravaginal administration. This formulation ensures the drug is delivered and held concentrated at the site of infection, where it is most needed, while minimizing systemic absorption.

Action Principle: How Does Natamycin Eliminate Pathogens?

Natamycin’s efficacy stems from its fungus-killing (fungicidal) action. It works by selectively binding to vital components (ergosterol) found in the fungal cell wall. This action physically disrupts the cell membrane, leading to the breakdown and destruction of the pathogen. This targeted mechanism helps eradicate the fungal source of the problem while limiting disruption to the body's local microflora.

What side effects are possible with ПРИМАФУНГИН?

Possible Side Effects and Safety Information

The safety profile for Natamycin (ПРИМАФУНГИН) vaginal suppositories is characterized by effects that are primarily local and confined to the site of administration, reflecting the negligible systemic absorption of the active substance. All adverse reaction classifications presented below are based strictly on authoritative government regulatory documents.


Official Adverse Reaction Scope

Category Regulatory Documentation
Key Adverse Reactions Local irritation, burning sensation, and hypersensitivity reactions.
Frequency Classification Local irritation is classified as Common in regulatory texts.
System-Organ Classes Effects are predominantly classified under General disorders and administration site conditions and Immune system disorders.
Serious Reactions No serious systemic adverse reactions are explicitly documented in regulatory labels for this locally administered dosage form.

Official Safety Constraints and Contextual Notes

The most critical safety constraint listed in official prescribing information is the absolute contraindication in patients with a known hypersensitivity to the active ingredient, Natamycin, or any of the excipients in the formulation.

Regarding time-related patterns, regulatory documentation notes that local reactions, such as burning, may be more frequently observed at the start of treatment and often subside spontaneously with continued use. Due to the minimal systemic exposure from intravaginal application, the official safety profile generally does not include specific safety warnings related to renal or hepatic impairment.

Overdose and Emergency Response

Overdose and when to seek help

The official regulatory assessment of overdose risk for ПРИМАФУНГИН (Natamycin vaginal suppositories) is defined by its pharmacokinetic profile, which confirms negligible systemic absorption from the local site of administration. Consequently, severe systemic toxicity following typical intravaginal overdose is not expected or documented in official regulatory materials.

Scope of Overdose Risk Regulatory Finding
Systemic Toxicity Highly unlikely and not anticipated.
Antidote Availability No specific antidote is known.

The primary concern in an overdose scenario is the potential for severe local adverse reactions or the consequences of accidental ingestion. Regulatory guidance mandates specific actions when such events occur.

Required Emergency Actions:

  • Seek immediate medical attention for any suspected overdose or if severe local symptoms develop, as described in the official prescribing information.
  • In the event a medical professional is contacted, the required management is officially described as symptomatic and supportive treatment to address the manifestation of the overdose.

The absence of expected systemic effects means that no specific physiological systems are routinely listed as being affected, and intensive hospital monitoring is not typically required unless other complicating factors or accidental oral ingestion are involved. All official instructions emphasize immediate consultation with a healthcare professional to determine the appropriate supportive steps.

Therapeutic Uses of ПРИМАФУНГИН

What ПРИМАФУНГИН Treats: Main Uses and Benefits

ПРИМАФУНГИН is used to address symptoms and manage conditions associated with infections caused by yeasts and molds, specifically targeting the category of superficial fungal infections. The key therapeutic domain for its use is vulvovaginal candidiasis, which is commonly known as a vaginal yeast infection.

Based on established medical information, the active ingredient may be considered for managing localized fungal infections of the vagina, cervix, and vulva. The medication works by addressing the underlying cause of the condition.

Brief Listing of Indications: The medication is used to address symptoms associated with fungal infections of the vagina, cervix, and vulva.

The primary benefit a patient may experience is the relief of local discomfort, such as vulvar itching, burning, and irritation, which are typical signs of this type of infection. Symptom relief may become noticeable during the first few days of use.

“The primary goal is the swift alleviation of troubling local symptoms.”


Quick Fact: Relief for Vulvovaginal Discomfort

Eligibility and Restrictions for Use

Eligibility Profile: Who Can and Cannot Use ПРИМАФУНГИН?

This section outlines the official population eligibility and non-eligibility requirements for ПРИМАФУНГИН (Natamycin vaginal suppositories) as documented in government regulatory sources. This information is based on the drug’s local action and minimal systemic absorption.

Classification Aspect Official Regulatory Stance
Primary Allowed Population Use is established in adult females for local antifungal therapy.
Absolute Contraindication Individuals with a history of hypersensitivity or allergy to Natamycin or any other component in the formulation must not use this medicine.
Pediatric Eligibility Safety and effectiveness have not been established in children and adolescents.
Geriatric Eligibility No overall differences in safety or effectiveness have been noted between older and younger adult patients.
Pregnancy/Lactation Pregnancy: Should be given only if clearly needed. Lactation: Caution is advised for nursing mothers.

Systemic Health Conditions: No specific restrictions related to systemic organ function, such as severe hepatic or renal impairment, are documented on the official labeling for the vaginal formulation. The eligibility profile is strictly defined by age, reproductive status, and hypersensitivity history.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory information regarding the interaction profile of ПРИМАФУНГИН (Natamycin) is primarily defined by the drug’s local route of administration and minimal systemic absorption.

Official Regulatory Profile

Category Official Regulatory Statement
Systemic Drug-Drug Interactions None documented.
Metabolic Interactions None expected or documented (e.g., CYP450).
Food, Alcohol, or Herbal Products No documented interactions.
Contraindicated Combinations No systemic medicines are formally documented as contraindicated due to interaction risk.

The active ingredient, Natamycin, demonstrates negligible systemic absorption following intravaginal administration. This pharmacokinetic property is the basis for the official interaction classification, as the absence of measurable systemic concentrations means that clinically significant drug-drug interactions, including those mediated by metabolic enzymes or drug transporters, are not expected and are not documented in regulatory labels.

Consequently, the official labeling provides no mandatory time separation requirements for co-administration with other medicines and reports no specific interaction concerns related to food, alcohol, or supplements. The interaction profile is strictly constrained by the product's localized effect.

Mechanism of Action

Direct Targeting of Fungal Cell Structure

The drug acts through a primary mechanistic focus on the fungal cell membrane by binding tightly to the molecule ergosterol. This interaction causes an immediate structural defect, leading to the formation of channels and disrupting the integrity of the cellular barrier.

Ion and Metabolite Leakage Cascade

The structural disruption initiates a mechanistic cascade where essential intracellular ions and metabolites leak out of the fungal cell. This loss of content and the collapse of the necessary electrochemical gradient ultimately results in the functional shutdown and death of the fungal organism, resulting in the cessation of fungal organism replication.

Selective Sterol Affinity

The mechanism relies on strong selective affinity for ergosterol, which distinguishes its interaction profile from cholesterol. This difference in molecular targets causes the termination of fungal proliferation by engaging a pathway that is dependent on the unique composition of the fungal membrane.

Dosage and Administration Information

General Principles of Administration

ПРИМАФУНГИН is strictly administered through the intravaginal route, reflecting its design as a localized antifungal agent. The usage protocol is defined by a fixed course of therapy involving a single 100 mg suppository. This dosage form contains the active substance Natamycin, delivered directly to the required site of action.

Official Dosing and Scheduling

The standard regimen requires that one suppository be inserted daily. The official schedule specifies administration once daily over a limited timeframe. Treatment is structured as a six-day course to ensure delivery of the full required dose over the designated duration. Adherence to this fixed course is central to the standardized usage protocol.

Contextual Use Instructions

To maximize the intended effect and ensure retention of the medicine, administration must occur at bedtime. This timing aligns with the instruction for the patient to remain in a recumbent position following insertion, which facilitates the dissolution and localized distribution of the suppository. Proper technique also requires the suppository to be inserted deeply into the vagina. The established dosing is intended for adult females. For procedural consistency, the initiation or continuation of the six-day course is conventionally timed to avoid the menstrual period.

Recent Clinical Evidence

ПРИМАФУНГИН: Recent Clinical Evidence


Evidence for Use in Vulvovaginal Candidiasis

Research explored the use of Natamycin in conditions characterized by fluctuating or episodic manifestations, specifically vulvovaginal candidiasis (VVC). The research base includes Randomized Controlled Trials (RCTs) and controlled clinical trials, which was studied for use in populations of Adult Females. This research examined outcomes related to physical discomfort, namely Clinical Recovery (how local symptoms like itching and irritation change over time) and Mycological Cure (assessment of the mycological cure status).

Studies focused on episodes where symptoms become more noticeable, seeking to understand symptom patterns during these acute phases. Findings describe patterns observed in the studies related to both clinical status and laboratory results. Research highlights changes measured during the study period in comparison to other management approaches. While research was studied for this indication, evidence quality varies across studies, particularly due to differences in how cure was defined in older trials. Research provides context but not individual predictions regarding how an individual may respond.


Duration of Observed Patterns and Long-Term Follow-up

Research examined the duration of observed patterns by observing study participants over a period after their treatment course was finished. Follow-up durations were limited, typically extending up to about one month post-treatment for assessing early outcomes. Longer observation periods are not fully established in the evidence base. Trials were observed in settings primarily focused on research exploring short-term symptom changes. Evidence is limited regarding patterns related to the longer-term rate of recurrence. The long-term effects are not fully established, and this represents an area where data are still emerging or evidence is limited.


Research in Special and Subgroup Populations

Natamycin was evaluated in specific patient groups, including studies focused on women with recurrent or chronic VVC. Findings indicate that studies monitored different patterns for this population characterized by functional limitations. Reviews have been conducted where Natamycin was studied for use in pregnant women. However, data for certain groups remain insufficient, meaning the available research provides limited information for long-term outcomes for all possible subgroups, and subgroup findings are uncertain.


Research Gaps and Areas of Uncertainty

The body of research was studied for its primary use, but limitations exist that affect the full understanding of the treatment landscape. Comparative evidence is lacking in some areas, particularly concerning direct, head-to-head comparisons against every available therapeutic option. Also, some evidence was observed in trials using Natamycin in combination with other agents, and it is not yet clear whether all measured outcomes are related only to Natamycin. Evidence highlights what is known—and what is still uncertain—and research describes that future research is ongoing to provide context for these defined gaps.

Key Studies & References

  1. Efficacy and Safety of Natamycin and Lactulose Vaginal Suppositories in Treatment of Vulvovaginal Candidiasis (NCT06411314)
  2. Antifungal (oral and vaginal) therapy for recurrent vulvovaginal candidiasis: a systematic review and meta-analysis
  3. Natamycin - Electronic Essential Medicines List (WHO EML)

Frequently Asked Questions (FAQ)

Common questions about ПРИМАФУНГИН (FAQ)


Q: Is it normal to feel a slight burning sensation after using the suppository?

Official regulatory documents list a local burning sensation as a Common adverse reaction, meaning it is one of the more frequently observed effects.

This discomfort is typically confined to the site of administration and is often observed at the beginning of the treatment course. Regulatory documentation notes that such local reactions may subside spontaneously with continued use.


Q: How quickly should I expect to see an improvement after starting ПРИМАФУНГИН?

Clinical research for this medicine has examined outcomes related to both Clinical Recovery (how symptoms change) and Mycological Cure (laboratory assessment of the fungus).

Official regulatory labeling does not provide a guaranteed or specific day-by-day timeline for when an individual patient should expect to see improvement.


Q: What happens if I stop using ПРИМАФУНГИН before the planned duration?

The official usage protocol specifies a fixed course of therapy, and adherence to this full schedule is considered central to its standardized use.

Stopping treatment earlier than the designated duration may be associated with an increased risk of the infection returning or not being fully resolved.


Q: Can men use ПРИМАФУНГИН for their symptoms?

The vaginal suppository formulation of this medicine is established for use in adult females for local antifungal therapy.

Official regulatory labeling for this specific product form does not include information or guidance regarding its use in men.


Q: Can ПРИМАФУНГИН interact with hormonal birth control pills?

Official regulatory profiles indicate that the product has negligible systemic absorption following local administration.

Due to this highly localized effect, no systemic drug-drug interactions are documented in the labeling, including interactions mediated by metabolic enzymes.


Q: Does using alcohol affect how ПРИМАФУНГИН works?

Official regulatory information documents no known interactions with alcohol, food, or supplements.

This is based on the drug's localized effect and the absence of minimal systemic absorption, meaning alcohol consumption is not expected to interfere with the medicine's action.


Q: Is ПРИМАФУНГИН suitable for children or teenagers?

According to official regulatory documents for the vaginal suppository formulation, safety and effectiveness have not been established for use in children and adolescents.


Q: Are there any long-term effects associated with using ПРИМАФУНГИН?

Research examined the duration of observed patterns by following study participants for a limited period, typically short-term after the treatment course.

Official evidence regarding long-term effects or patterns related to the long-term rate of recurrence is described as limited, and longer observation periods are not fully established.


Q: Is it normal to experience discomfort when inserting the pessary/suppository form?

Adverse reactions for this medicine are primarily local and confined to the site of administration.

Common local reactions include irritation and a burning sensation, which may contribute to a feeling of discomfort during administration.


Q: What evidence exists for the use of ПРИМАФУНГИН in high-risk patients?

Research has evaluated the active substance in specific patient groups, including studies focused on women with recurrent or chronic candidiasis.

However, official documentation advises that data regarding long-term outcomes for all possible subgroups remain insufficient.


Q: Is it necessary to avoid certain activities while using ПРИМАФУНГИН?

Official administration instructions specify that the suppository should be inserted at bedtime.

This timing aligns with the instruction for the patient to remain in a recumbent position following insertion, which is intended to facilitate the distribution of the medicine. Official documents do not typically address specific daily activity restrictions.


Q: What are the symptoms of a serious side effect from ПРИМАФУНГИН?

The official label states that no serious systemic adverse reactions are explicitly documented for this locally administered dosage form.

However, the absolute contraindication is a known hypersensitivity. The symptoms of a severe hypersensitivity reaction, such as swelling or difficulty breathing, would constitute a serious event described by regulatory bodies.


Q: Is it possible to have an allergic reaction to ПРИМАФУНГИН?

Yes, hypersensitivity reactions are listed as a key adverse reaction in official documents.

Having a history of allergy to the active ingredient (Natamycin) or any excipient in the formulation is listed as an absolute contraindication for using the medicine.


Q: How long does it take for ПРИМАФУНГИН to be fully eliminated from the body?

Due to the product’s local administration, its profile is characterized by negligible systemic absorption.

This means the concentration reaching the bloodstream is minimal, and therefore, typical systemic elimination data like half-life is generally not relevant or documented in regulatory texts.


Q: Is there a risk of the fungus becoming resistant to ПРИМАФУНГИН over time?

Regulatory bodies have reviewed the active substance, Natamycin, and have concluded that the use of this polyene antifungal does not present a relevant risk for the development of resistance in fungi.


Q: What type of fungi is ПРИМАФУНГИН effective against?

This medicine is classified as a highly targeted Antifungal Agent.

It is used to address and resolve issues caused by susceptible fungal pathogens, such as Candida species, which are commonly noted in official texts. It is ineffective against bacteria.


Q: Does ПРИМАФУНГИН contain any ingredients that might cause issues for people with allergies (e.g., lactose, gluten)?

Official safety constraints list an absolute contraindication for patients with a known hypersensitivity or allergy to the active ingredient, Natamycin, or any of the excipients used in the formulation.

The full list of excipients is available in the product’s official prescribing information, which can be consulted if there are concerns about specific ingredients like lactose or gluten.


Q: How does the concentration of the medicine affect its use?

The medicine is part of a fixed course of therapy using a single 100 mg suppository daily.

The formulation is specifically designed to ensure the drug is delivered and held concentrated directly at the required site of infection to maximize its local antifungal effect.


Q: If I have two different infections, will ПРИМАФУНГИН treat both?

ПРИМАФУНГИН is a highly targeted Antifungal Agent.

Its mechanism of action relies on binding to components found only in fungal cell walls, making it selectively effective against fungi but not against non-fungal pathogens like bacteria.

How should ПРИМАФУНГИН be stored and disposed of?

How to Store and Dispose of ПРИМАФУНГИН

The storage and disposal of ПРИМАФУНГИН (Natamycin vaginal suppositories) must strictly adhere to the conditions mandated by regulatory labeling.

Storage Requirements

The medicine must be stored in a dry, dark place and at a temperature not exceeding 25 C. It is a mandatory requirement to keep the product in its original packaging to protect its integrity and stability.

Protection and Stability

To ensure safety, the medication must be stored out of the sight and reach of children.

Do not use the suppositories after the expiration date printed on the package.

Official Disposal Instructions

Unused or expired ПРИМАФУНГИН must not be disposed of via general household waste or wastewater. The product or any waste material should be discarded in accordance with local regulatory requirements for medicinal products.

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

Available in countries:

Equivalent of ПРИМАФУНГИН found in:

A-Z Index: