Donaxyl

Quick links to important sections

Donaxyl

Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Donaxyl

Property Description
Active ingredient Dequalinium Chloride
Form Vaginal tablet (or ovule)
Pharmacological class Antiseptic and Disinfectant; Gynaecological Antiinfective
Common use Local treatment of vaginal infections
Origin Synthetic compound (Quaternary ammonium derivative)

What Type of Medicine is Donaxyl (Dequalinium Chloride)?

Donaxyl is a single-entity pharmaceutical preparation primarily classified as a local anti-infective agent used in gynaecological practice. Its active ingredient is Dequalinium Chloride. The compound is assigned the Anatomical Therapeutic Chemical (ATC) code G01AC05 for its function as a Gynaecological Antiinfective and Antiseptic. This indicates that the medication is pharmacologically supported for use against localized infections. Donaxyl is intended strictly for topical application via the vagina, ensuring that its therapeutic effects are concentrated locally rather than exerting systemic effects throughout the body.

Composition and Form: Is Dequalinium Chloride Synthetic?

The foundation of Donaxyl is the active ingredient Dequalinium Chloride, which is a synthetic compound classified as a bis-quaternary ammonium molecule. It is a monotherapy drug, relying entirely on this single agent for its therapeutic properties. A key feature is its dosage form as a vaginal tablet, a form specifically designed for simple, localized insertion and reliable release of the active component. The prescription-only (Rx) status often associated with this preparation in many regions emphasizes its role in treating diagnosed infections.

General Purpose and Action: Broad-Spectrum Antiseptic Function

The overall purpose of Donaxyl is to address localized infections by providing broad bactericidal and fungicidal activity. This capability is clinically recognized for its effectiveness against the range of microorganisms commonly associated with infections in the target area. Dequalinium Chloride's fundamental action involves rapidly compromising the integrity of microbial cell membranes. This powerful antiseptic mechanism ensures the effective cleansing and reduction of the overall pathogenic load at the application site, which is the general benefit necessary for the resolution of the localized infectious process.

What side effects are possible with Donaxyl?

Possible Side Effects and Safety Information

The safety profile for dequalinium chloride vaginal tablets is based on official regulatory classifications, with reported adverse reactions predominantly affecting the local application site. These effects are formally categorized by frequency in prescribing information.


Adverse Reaction Classifications

Frequency Classification Examples of Listed Adverse Reactions (SOC)
Common (1/100 to 1/10) Vulvovaginal pruritus (itching), burning sensation, vaginal discharge.
Uncommon (1/1,000 to 1/100) Vaginal pain, vaginal haemorrhage (bleeding), headache, nausea.
Frequency Not Known (Post-Marketing) Ulceration and maceration of vaginal epithelium, serious allergic reaction signs, redness, fever.

Adverse effects are grouped into System-Organ Classes (SOC), including Reproductive system and breast disorders and General disorders and administration site conditions.


Serious Reactions and Safety Constraints

The potential for serious allergic reactions (hypersensitivity) is documented, though their frequency is not known from clinical trials, being derived from post-marketing reports. These require medical attention.

Official labeling defines several safety-related restrictions (contraindications). The medication is contraindicated in individuals with known hypersensitivity to the active ingredient or excipients, or in the presence of ulceration of the vaginal epithelium or cervix.

Furthermore, the safety information contains population-specific notes. The product is contraindicated for use in young girls who have not yet reached sexual maturity (pre-menarche). It is also advised not to use the tablet within 12 hours before parturition (childbirth) to limit newborn exposure. Regulatory documents note that using a higher daily dose or exceeding the recommended treatment duration may increase the risk of vaginal ulcerations.

Overdose and Emergency Response

Overdose and When to Seek Help: Official Regulatory Information

This section describes the officially documented manifestations of overdose and the required emergency actions for Dequalinium Chloride vaginal tablets, strictly based on government regulatory prescribing information.


Documented Overdose Manifestations

Domain Official Regulatory Statement
Local Tissue Effects Overexposure from an increased daily dose or extended treatment duration may result in vaginal ulcerations and bleeding surface defects (erosions).
Systemic Toxicity Severe systemic toxic effects are documented as unlikely due to the negligible systemic absorption of the drug following topical vaginal administration.
Accidental Ingestion Accidental oral intake has been associated with limited gastrointestinal symptoms, including nausea, abdominal pain, vomiting, and diarrhea.

Emergency Actions and Help-Seeking Requirements

Domain Official Regulatory Statement
Procedural Action In case of local overdose resulting in adverse events, vaginal lavage should be performed to remove any residual product material.
Antidote No specific antidote is listed or documented in the official prescribing information. Treatment is symptomatic and supportive.
When to Seek Help If local complaints persist or if erosions or bleeding surface defects are observed, treatment must be discontinued and medical attention sought as soon as possible.

Therapeutic Uses of Donaxyl

This medication is commonly used to help with localized vaginal infections, supporting symptom management across relevant domains.

Dequalinium chloride vaginal tablets are indicated for the treatment of Bacterial Vaginosis (BV) in adult women. The overall benefit is related to its application in therapeutic areas involving heightened responses, which supports symptomatic relief across several domains. It is commonly used across conditions presenting with acute episodes of symptoms associated with acute or episodic changes, including BV and conditions marked by increased physiological stress from mixed manifestations.

The therapy is applied in addressing symptom clusters that interfere with daily comfort, such as managing unpleasant odor, abnormal discharge, and the local symptoms related to inflammatory or irritative states like itching and burning. This symptomatic support is often utilized when short-term symptomatic assistance is needed to ease distress.

Quick Fact: Support for Symptoms Related to Inflammatory or Irritative States The treatment helps manage symptoms that create noticeable physiological strain, and assists with maintaining functional stability during periods where symptoms escalate temporarily.

“The treatment is relevant in contexts involving conditions marked by increased physiological stress, and supports the patient during difficult episodes by easing distress.”

This approach contributes to improved comfort during periods of heightened symptoms and may help patients cope more steadily with symptom fluctuations.

Regulatory References

  1. Regulatory Decision Summary from Health Canada

Eligibility and Restrictions for Use

Eligibility Scope

The eligibility for Dequalinium Chloride vaginal tablets (Donaxyl) is defined by regulatory bodies through specific contraindications and use restrictions based on age, physiological status, and pre-existing conditions.

Classification Eligibility Status as per Regulatory Label
Populations for whom use is allowed Adult women (for the indicated condition).
Populations for whom use is contraindicated Patients with known hypersensitivity to the active substance or excipients; patients with ulceration of the vaginal epithelium and/or the cervix; and premenarchal patients (young girls who have not yet had their first menstruation).
Age-related eligibility rules Indicated for adult women. Use is not recommended in women under 18 years and over 55 years due to a lack of available efficacy and safety data in these age groups.
Pregnancy and lactation eligibility status Pregnancy: May be considered for use if clearly necessary. Lactation: Can be used if clinically needed; no harmful effects are anticipated due to negligible systemic exposure.
Eligibility-related restrictions Must not be used within 12 hours prior to delivery/birth to minimize newborn exposure. Treatment should be interrupted during the heavy bleeding period of menstruation and resumed afterwards.

Eligibility Structure Summary

Official regulatory documents classify certain populations as contraindicated based on hypersensitivity, local tissue damage, or developmental stage (premenarchal). Other groups are designated as not recommended due to insufficient data (women under 18 or over 55). The low systemic absorption also means that official labeling does not document specific restrictions based on renal or hepatic impairment.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official interaction profile for Donaxyl (Dequalinium Chloride) is primarily defined by its local, topical application as a vaginal tablet, resulting in negligible systemic absorption of the active ingredient. Consequently, interactions with systemic medicines, including those mediated by metabolic enzymes (such as CYP systems) or drug transporters, are not established and are not expected according to government regulatory documentation.

Interactions are restricted to local effects at the application site:


Pharmacodynamic and Administration Restrictions

Interaction Entity Official Regulatory Restriction
Anionic Substances (Soaps, Detergents, Surfactants) Co-administration is discouraged as these can reduce the antimicrobial activity of Dequalinium Chloride.
Non-Latex Intravaginal Devices (e.g., Diaphragms) Concomitant use is discouraged; alternative methods should be used for at least 12 hours following treatment.
Latex Condoms No impairment of functionality is documented in the regulatory information.

There are no specific medicinal products or substances formally listed as contraindicated for co-administration due to an interaction risk. Similarly, no established interactions with food, alcohol, or systemic herbal products are documented in official prescribing information.

Mechanism of Action

The mechanism of Donaxyl (Dequalinium Chloride) is defined by its role as a cationic surfactant, driving a localized physico-chemical disruption of pathogens. The positively charged bis-quaternary ammonium molecule exhibits a strong electrostatic attraction to the anionic components within the outer layer of target organisms, primarily the microbial cell membrane.

This interaction rapidly destabilizes the membrane's structural integrity, causing uncontrolled leakage of vital intracellular components and ultimately leading to cell lysis (rupture) and the destruction of the microorganism. This is a bactericidal and fungicidal effect.

Due to the molecule's pharmacological profile, which involves negligible systemic absorption, the mechanistic action is strictly localized to the site of administration. This confinement concentrates the membrane-disrupting mechanism on microbial structures, resulting in a confined localized reduction of microbial load. The mechanism does not engage human systemic physiological pathways.

Dosage and Administration Information

Official Administration Guidelines for Dequalinium Chloride

The use of Dequalinium Chloride vaginal tablets (such as Donaxyl or Fluomizin) is strictly guided by a fixed, six-day regimen for local treatment. The official instructions define the route of administration, precise timing, and specific procedural rules for proper application.

Instruction Description
Route of administration Vaginal use only; the 10 mg tablet is a topical form.
Dosing schedule One 10 mg vaginal tablet daily.
Timing and frequency Administered once daily in the evening, preferably before bed.
Course duration The treatment must be a fixed 6 consecutive days and is required to be completed in full.
Menstruation protocol The course must be interrupted during heavy menstrual flow and resumed immediately afterwards.
Insertion procedure Insert the tablet deeply into the vagina, best performed in a reclining position with the legs slightly bent. If the vagina is very dry, the tablet may be moistened with a drop of water before insertion to ensure dissolution.
Age-group restrictions Use is forbidden for premenarchal girls (who have not had their first menstrual period).

The official guidelines emphasize that treatment for less than six days may result in a relapse, requiring the patient to continue the full course even if subjective discomfort has resolved. If a dose is forgotten, the next dose should be taken at the regular time; no double dose is permitted to compensate. These instructions define the necessary procedural structure for effective administration.

Recent Clinical Evidence

Research Evidence: Overview of Studies for Donaxyl

The use of dequalinium chloride vaginal tablets was studied in clinical trials for various vaginal conditions. This overview details the structure of the existing evidence, focusing only on the study designs, the outcomes that researchers examined, and the acknowledged limitations in the data, according to official and peer-reviewed scientific sources. The research provides context, but findings describe group patterns, not personal outcomes.


Evidence for Use in Bacterial Vaginosis (BV)

The largest body of research for dequalinium chloride focuses on Bacterial Vaginosis (BV), a condition characterized by fluctuating or episodic manifestations.

These studies were evaluated in adult women of reproductive age who had a confirmed BV diagnosis. Many of these trials utilized a non-inferiority design, meaning they were structured to evaluate differences against existing oral or vaginal antibiotic therapies. The primary outcomes examined included the rate of clinical success (based on standardized criteria) and the rate of microbiological success (assessed by specialized scoring of the vaginal flora). Systematic reviews aggregated data and reported on the consistency of the measured clinical success and recurrence outcomes across the acute treatment phase.

However, long-term effects are not fully established, as follow-up durations were limited in most primary Randomized Controlled Trials (RCTs), often only extending to about one month after treatment began. This means that data for certain groups remain insufficient regarding the sustained prevention of recurrence over many months.


Evidence for Use in Vulvovaginal Candidiasis (VVC)

Research examined VVC, a condition involving periods of heightened symptoms. The evidence includes comparative RCTs where dequalinium chloride was observed in adult women against other topical antifungal medications.

Studies focused on the microbiological success rate (confirming the absence of yeast) and measures of clinical response related to patient-reported outcomes describing perceived discomfort (e.g., burning, itching). The overall volume of high-quality, comparative research for VVC is not as extensive as the evidence base available for BV, and the evidence provides limited insight into outcomes for women with recurrent VVC or those with more complicated forms of the condition.

Frequently Asked Questions (FAQ)

Common questions about Donaxyl (FAQ)


Q: Is Donaxyl available over the counter?

A: According to the classification by many international regulatory agencies, Dequalinium Chloride vaginal tablets (Donaxyl) are categorized as a prescription-only medicine. This means that access typically requires a prescription from a licensed healthcare professional in many regions.


Q: Does Donaxyl cause drowsiness or fatigue?

A: Official regulatory documents categorize known adverse effects based on how often they occur. Drowsiness and general fatigue are not listed among the commonly or uncommonly reported side effects in the official product information for Donaxyl. Headache, however, is sometimes reported as an uncommon effect.


Q: What happens if a person misses a dose of Donaxyl?

A: If a dose is forgotten, official administration instructions advise against taking two tablets at once to make up for the missed dose. The administration instructions indicate continuing with the regular dosing schedule for the subsequent doses.


Q: Is there a maximum time frame for how long Donaxyl can be used?

A: Regulatory documents define the approved treatment regimen as a fixed course of 6 consecutive days. Official regulatory information cautions that using the medicine for longer than the recommended duration may potentially increase the risk of local adverse effects, such as developing vaginal ulcerations.


Q: Why do some people experience itching or rash after starting Donaxyl?

A: Vaginal itching, or pruritus, is listed in the official safety information as a common side effect. Patient-focused documents note that symptoms of the underlying infection, such as itching and burning, can sometimes feel worse at the beginning of the treatment course before they start to improve.


Q: What if Donaxyl doesn't seem to be working after a few days?

A: Official guidelines emphasize that the full course of treatment is required to be completed, even if symptoms appear to be resolving or if there is no immediate improvement. Information indicates consulting a healthcare professional if complaints or signs of the original infection persist after the full course is finished.


Q: Is Donaxyl known by any other brand names internationally?

A: Yes, the active ingredient Dequalinium Chloride is recognized globally and is sold under various different brand names depending on the country. Examples of other brand names for this compound include Fluomizin and Vablys.


Q: Are there any specific laboratory tests required before or during Donaxyl treatment?

A: Official safety warnings and precautions published by regulatory bodies do not specify or mandate any particular blood tests or other laboratory evaluations that a patient must undergo before or during the use of Donaxyl vaginal tablets.


Q: What is the difference between Donaxyl and its active metabolite?

A: The active ingredient, Dequalinium Chloride, is known to have negligible systemic absorption, meaning very little enters the bloodstream. Due to this highly localized action, official regulatory documents generally describe the effects as confined to the application site, and there is no established information regarding systemic active metabolites.


Q: How quickly does Donaxyl typically start working?

A: The mechanism of Donaxyl involves a rapid physical disruption of the microbial cell walls, which is a process that begins quickly upon application. While this anti-infective action is rapid, the overall resolution of clinical symptoms is expected to progress over the full 6-day course of treatment.


Q: How long do the effects of Donaxyl usually last?

A: Donaxyl is intended to achieve a localized reduction of the infectious organisms after the fixed 6-day treatment course. Studies tracking the effectiveness of the drug typically monitor outcomes for a limited duration—often around one month—following the start of the treatment.


Q: Can Donaxyl be taken with common pain relievers like ibuprofen or paracetamol?

A: Official labeling for Donaxyl notes that the active ingredient is designed for local use and has negligible systemic absorption. Therefore, regulatory documents do not establish or expect interactions with systemic oral medicines, including common pain relievers like ibuprofen or paracetamol.


Q: Is it necessary to finish the entire course of Donaxyl as described?

A: Official guidelines emphasize that the full course of treatment is required to be completed. Regulatory information warns that stopping the treatment too early (before the six consecutive days are done) may lead to the return of symptoms or a relapse of the infection.


Q: Do all side effects of Donaxyl appear immediately?

A: Official safety information reports side effects observed during clinical trials (Common or Uncommon) and those reported later from post-marketing surveillance (Frequency Not Known). This means some reactions are noted soon after starting treatment, while others may be identified only after the drug is in widespread use.

How should Donaxyl be stored and disposed of?

How to Store and Dispose of Donaxyl?

The storage and disposal of Donaxyl (Dequalinium Chloride vaginal tablets) must strictly follow the requirements specified in the official regulatory documents.

Storage Requirements

Detail Requirement
Temperature Store at room temperature, not to exceed 30 C (86 F).
Packaging Keep the medicine in its original packaging.
Stability The product has an official shelf-life of 3 years when stored correctly.
Child Safety Mandatory to keep out of the sight and reach of children.

Disposal Instructions

Unused or expired Donaxyl must be disposed of properly to protect the environment. Regulatory requirements state the medicine must not be thrown away via wastewater or common household waste.

Patients are directed to consult a pharmacist to determine the appropriate method for discarding the medicine, ensuring compliance with local pharmaceutical waste regulations.

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

Available in countries:

Equivalent of Donaxyl found in:

A-Z Index: