Erfuzide

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Erfuzide

Treatment option: Gastritis, Diarrhea

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 Erfuzide

Quick Facts

Property Description
Active Ingredient Nifuroxazide
Form Oral Solid (Capsules, Tablets), Oral Liquid (Suspension)
Pharmacological Class Intestinal Anti-infective, Nitrofuran Antibiotic
General Purpose To combat bacterial pathogens in the gut
Origin Synthetic Organic Compound, Nitrofuran Derivative

What Type of Medicine is Erfuzide?

Erfuzide is a pharmaceutical preparation whose sole active ingredient is Nifuroxazide, classified as an intestinal anti-infective and an antibiotic. This drug belongs to the nitrofuran antibiotic class, meaning it is a synthetic organic compound designed specifically to combat bacterial pathogens within the digestive system. Nifuroxazide is clinically recognized as a treatment for acute infectious diarrhea and is listed by the World Health Organization (WHO) under the Anatomical Therapeutic Chemical (ATC) code A07AX03, which places it among the "Other intestinal antiinfectives." This designation highlights its role as a locally acting agent, typically used in scenarios like traveler's diarrhea, differentiating it from systemic antibiotics that are absorbed into the bloodstream.

Composition and Available Forms

The composition of this medication is based on Nifuroxazide as a single-ingredient product, which is a nitrofuran derivative with the established molecular formula C12H9N3O5. The preparation is designed for the oral route of administration in various oral formulations, specifically oral solid forms such as capsules and tablets, as well as oral liquid forms like suspension. The availability of the liquid suspension form is often a differentiating factor, making the medicine particularly suitable for pediatric patient groups. Its general therapeutic purpose is to control and reduce the bacterial load responsible for gastrointestinal infections by utilizing its essential non-systemic action, which concentrates its antimicrobial activity within the gut lumen.

What side effects are possible with Erfuzide?

Possible Side Effects and Safety Information

The safety profile for Erfuzide (nifuroxazide) is formally documented in regulatory texts, with adverse reactions grouped by official System-Organ Classes (SOC). The most frequently reported effects involve the skin and the gastrointestinal tract, consistent with its function as a non-systemic intestinal anti-infective.

Adverse Reaction Categories

System-Organ Class Examples of Documented Effects
Skin and Subcutaneous Tissue Disorders Rash, pruritus (itching), urticaria (hives)
Gastrointestinal Disorders Abdominal pain, nausea, vomiting, diarrhea
Nervous System Disorders Dizziness, headache

Serious Adverse Reactions

The most clinically significant reactions documented in official safety literature are related to severe hypersensitivity. Serious allergic manifestations, such as Angioedema (swelling of the face, lips, or throat) and Dyspnea (difficulty breathing), are listed as potential risks. The frequency of these and many other effects derived from post-marketing surveillance is often classified as Frequency Not Known.

Population-Specific Safety Constraints

The official label contains specific restrictions for certain populations. Due to documented mutagenic potential in non-clinical studies, the use of nifuroxazide is prohibited during pregnancy. Furthermore, the medicine is contraindicated in any individual with a known prior hypersensitivity to nifuroxazide or to any other nitrofuran derivative compound. Caution is advised when considering use in patients with pre-existing hepatic or renal impairment.

Overdose and Emergency Response

Overdose and When to Seek Help

This section describes the officially documented signs of overdose and the required emergency actions as stated in government regulatory labeling for Erfuzide (nifuroxazide).


Documented Manifestations and Outcomes

Entity Official Regulatory Statement
Documented Manifestations Overdose primarily results in an intensification of gastrointestinal symptoms, including severe abdominal pain and vomiting.
Severe Outcomes Due to the minimal absorption of nifuroxazide, systemic toxicity is typically not prominent following an overdose, and specific cardiac or neurological effects are not routinely documented in the label.

Required Emergency Actions

Entity Official Regulatory Statement
Emergency Help-Seeking Patients must seek immediate medical attention and contact emergency services if a suspected overdose has occurred.
Antidote Availability No specific antidote is known for nifuroxazide overdose.
Supportive Management Management is symptomatic and supportive. Regulatory procedures may include gastric lavage for recent ingestion to remove unabsorbed material.
Monitoring Requirements Hospital monitoring may be required for patients following a very large ingestion or if severe symptoms are persistent, to ensure proper supportive care.

Therapeutic Uses of Erfuzide

What Erfuzide Treats: Main Uses and Benefits

Erfuzide (nifuroxazide) is an intestinal anti-infective agent commonly used across therapeutic domains where additional symptomatic support is needed, focusing on conditions that present with systemic or localized discomfort in the gastrointestinal tract. Nifuroxazide is considered relevant for managing conditions presenting with symptoms associated with acute or chronic bacterial diarrhea.

The medication is considered relevant for easing symptom clusters that may become intense or disruptive, such as symptoms related to physical discomfort or systemic imbalance, which are symptoms that interfere with daily functioning. It assists with maintaining functional stability when groups of symptoms appear suddenly or fluctuate. Used in clinical scenarios where short-term symptom stabilization is important, Erfuzide provides support that helps ease the overall symptom burden and generally contributes to improved comfort during periods of heightened symptoms.

Quick Fact: Supports Management of Acute Symptoms Erfuzide may assist with managing symptoms that interfere with daily comfort in situations involving certain distressing symptoms linked to bacterial causes.

Eligibility and Restrictions for Use

Erfuzide (Nifuroxazide) is primarily indicated for the treatment of acute bacterial diarrhea in adults and children over a specific age, generally one year old for the suspension formulation. Because its action is mainly confined to the intestinal lumen, it is considered a localized therapy for gastrointestinal infections.

However, Erfuzide is not suitable for everyone. It is contraindicated in individuals with a known hypersensitivity or allergy to Nifuroxazide or any other nitrofuran derivative. Patients should always inform their healthcare provider of any drug allergies.


Populations Requiring Caution

Certain patient populations may require a doctor's careful evaluation before using Erfuzide. This is typically due to a lack of extensive safety data or the potential for underlying conditions to complicate treatment.

Population Cautionary Notes
Infants Not recommended for children under one year of age.
Pregnancy Use should be considered only when clearly necessary, as safety data are limited.
Breastfeeding Minimal systemic absorption is expected, but use should be discussed with a doctor to weigh potential risks.
Pre-existing Conditions Patients with rare hereditary problems of fructose intolerance, glucose-galactose malabsorption, or sucrase-isomaltase insufficiency should avoid certain formulations.

What should I know about interactions with other medicines?

The official interaction profile for Erfuzide (Nifuroxazide) is based on documented regulatory statements concerning co-administered substances and strictly reflects the drug's localized action within the gastrointestinal tract.

Contraindicated and Restricted Combinations

  • Alcohol (Ethanol): Co-administration with alcohol or any alcohol-containing products is formally contraindicated by regulatory documentation. This prohibition is established due to the documented risk of a serious pharmacodynamic interaction known as a disulfiram-like reaction.
  • CNS Depressants: Nifuroxazide is listed as not compatible with medicines classified as central nervous system (CNS) depressants. This constitutes a formal regulatory warning against co-use due to the potential for additive pharmacodynamic effects.
  • Anti-abuse Drugs: Regulatory information also states that the use of Nifuroxazide is not compatible with medicinal products used to manage alcohol dependence, such as anti-abuse drugs.

Pharmacokinetic and Metabolic Profile

Due to the limited systemic absorption of Nifuroxazide, official regulatory documents do not typically specify detailed interactions involving major metabolic enzymes like the cytochrome P450 system or specific drug transporters. However, one specific co-administration has been officially evaluated and documented:

  • Racecadotril: Joint administration with racecadotril is confirmed in regulatory reviews as having no clinically significant interaction and not modifying the pharmacokinetics of racecadotril in human subjects.

This regulatory structure focuses primarily on critical substance prohibitions and specific pharmacodynamic incompatibilities, establishing mandatory constraints.

Mechanism of Action

The mechanism of action of Erfuzide (Nifuroxazide) is strictly localized to the gastrointestinal lumen and is defined by two key mechanistic domains that lead to the selective elimination of susceptible bacterial pathogens.


Targeted Bio-activation by Bacterial Enzymes

The drug is first activated inside the pathogenic bacterium, not the human body. Nifuroxazide acts as a substrate for nitroreductase enzymes found within the susceptible target cells. This enzymatic reduction converts the parent molecule into highly reactive nitro radicals, initiating a critical molecular cascade that is essential for the initiation of the cytotoxic action.


Disruption of Pathogen Macromolecules and Physiological Consequence

These reactive intermediates inflict indiscriminate, irreparable damage to bacterial DNA, RNA, and essential proteins, halting the pathogen's ability to replicate and causing cellular destruction. By reducing the population of toxin-producing bacteria, this action limits the pathogens' capacity to trigger the hypersecretion of water and electrolytes into the gut, which contributes to the normalization of intestinal fluid handling.

Dosage and Administration Information

Official Administration Guidelines

Erfuzide (Nifuroxazide) is an intestinal anti-infective administered exclusively via the oral route. The medicine is supplied in capsules intended for use in adults and an oral suspension typically used for pediatric patients. The following administration parameters are documented in official prescribing information.

Instruction Official Guideline
Route of administration Oral route only.
Dosing schedule (Adults) One 200 mg capsule taken four times daily (QID).
Timing in relation to meals Preferably taken before the main meals.
Age-group administration Capsules are for adults only. Oral suspension is used for pediatric patients (typically children over 2 years of age).
Preparation requirements The oral suspension must be shaken well before use.

Administration Protocol and Duration

The standard adult dosing schedule requires a capsule strength of 200 mg to be administered four times daily throughout the course of treatment, resulting in a total daily dose of 800 mg. This frequency is designed to sustain drug concentration within the gut lumen. Intake is often scheduled to occur preferably before the main meals, supporting its intended localized action. The total course of treatment is strictly time-constrained: the duration must be limited and not exceed 7 days under any circumstance. In many adult regimens, the course is typically completed in 3 days. The total course length is governed by these label-based constraints, which determine the maximum allowed period of use.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Erfuzide

Evidence for Use in Acute Bacterial Diarrhea and Related Conditions

This section summarizes the structure of the primary research base for Erfuzide (nifuroxazide), outlining the key Randomized Controlled Trials (RCTs) and observational studies that have examined its use for acute diarrheal syndromes, including traveler's diarrhea. Studies monitored the use of nifuroxazide in populations presenting with acute diarrhea, assessing short-term or episodic symptom patterns. Studies conducted during periods of increased symptom activity were evaluated in populations mainly consisting of adults presenting with uncomplicated acute diarrheal episodes.

In these research scenarios, studies monitored outcomes related to episodic changes and physical discomfort. Findings describe patterns observed in the studies related to measured outcomes such as stool frequency and consistency. Research has examined measured variables related to daily functioning or activity level during a short period of heightened symptom activity. The available data include patterns measured over the short-term; however, follow-up durations were limited, typically only spanning a few days beyond the treatment period.


Focus of Studies on Symptoms and Recovery Time

Research examined the number of stools per day and the consistency of those stools, which are outcomes related to functional imbalance. Findings highlight changes measured during the study period, with researchers tracking the time point at which the last unformed stool was recorded. The data largely focus on outcomes related to physical discomfort experienced over a short observation interval.


Current State of Evidence for Other Gastrointestinal Contexts

Limited, investigational research has explored the use of nifuroxazide in other complex conditions, such as its preliminary study as an add-on treatment in certain inflammatory conditions like Ulcerative Colitis. Studies reported measurements of changes in complex laboratory markers during the study period. Because sample sizes were modest and the research is still in its early stages (pilot studies), certainty remains low for these investigational uses.


What is Still Uncertain About Erfuzide's Research Base

Long-term outcomes are not fully established due to the consistently short follow-up durations in the primary studies. Data for certain groups, particularly pediatric patients (children), remain insufficient in the core research summaries. Comparative evidence is lacking against a broad array of contemporary standard treatments, and research is ongoing to better contextualize its findings.

Key Studies & References

  1. [Double-blind controlled study of the efficacy of nifuroxazide versus placebo in the treatment of acute diarrhea in adults]
  2. A Randomized Controlled Pilot Study Evaluating the Safety and Efficacy of Nifuroxazide in Patients with Ulcerative Colitis

Frequently Asked Questions (FAQ)

Common questions about Erfuzide (FAQ)


Q: Is Erfuzide available as a generic medicine?

The active ingredient in Erfuzide is Nifuroxazide. Regulatory bodies have authorized this active substance for marketing under various product names across different regions, indicating the active substance is available under non-branded names.

Q: Can older people use Erfuzide safely?

Official safety information indicates that caution is advised when considering the use of this medicine in patients who have pre-existing hepatic (liver) or renal (kidney) impairment. Since these conditions are frequently observed in older individuals, this specific caution is generally considered relevant to that population.

Q: Is it normal to feel tired after starting Erfuzide?

Regulatory documents list certain side effects related to the nervous system, such as dizziness and headache. However, other non-specific effects like general fatigue or tiredness are not formally listed in the official product safety information.

Q: Can Erfuzide affect my ability to drive or operate machinery?

The product information includes possible adverse effects such as dizziness and headache. Due to the potential for these effects, official product information notes that patients must be aware of how the medicine may impact their ability to drive or operate machinery.

Q: Does Erfuzide interact with hormonal birth control?

Because this medicine is only absorbed into the bloodstream in very limited amounts (limited systemic absorption) and is not known to affect major metabolic systems, regulatory information suggests it is not typically expected to reduce the effectiveness of hormonal contraceptives.

Q: What does 'contraindication' mean in the context of Erfuzide?

A contraindication is a specific situation where the use of the medicine is formally prohibited, according to official guidance. This is often due to a known allergy or when taking certain other prohibited substances. Using the medicine under a contraindication can lead to severe adverse outcomes or a serious pharmacodynamic interaction.

Q: Does Erfuzide affect fertility?

Official product documents state that there is currently insufficient information available on the potential effect of the active ingredient on fertility. This assessment is based on a lack of adequate data from animal studies.

Q: Can Erfuzide be used for conditions other than the main one listed?

The medicine is formally indicated only for the treatment of acute bacterial diarrhea in adults and certain children. Use for conditions other than this approved indication is not included in the formal approved label for the medicine.

Q: Are there any long-term effects of using Erfuzide?

Erfuzide is intended only for strictly short-term use, with treatment duration limited to no more than 7 days. Because of this short-term usage constraint, long-term outcomes are not fully established in the primary clinical studies.

Q: Does Erfuzide interact with caffeine or alcohol?

Co-administration with alcohol or any alcohol-containing product is formally contraindicated by official documents due to the risk of a serious pharmacodynamic reaction. Official documents do not specify any interaction with caffeine.

Q: Are there any food restrictions when taking Erfuzide?

The official administration guideline states that the medicine is preferably taken before the main meals. Specific food restrictions that must be avoided while using the medicine are not formally listed in the product information.

Q: Are the effects of Erfuzide temporary or long-lasting?

The drug is prescribed for a strictly limited and short course of treatment, typically lasting only a few days. Its action is defined as being localized to the gastrointestinal tract, consistent with its use for an acute issue.

Q: Is Erfuzide a targeted or broad-acting medication?

Erfuzide is officially classified as an intestinal anti-infective that is described as acting with the selective elimination of susceptible bacterial pathogens. Its function is non-systemic and localized primarily within the gut lumen, which defines its scope of action.

Q: Are there different strengths of Erfuzide available?

The medicine is officially supplied in 200 mg capsules for adults and an oral suspension for pediatric patients. Other dose strengths are not officially cited in the administration guidelines.

Q: Can men and women use Erfuzide the same way?

The formal administration guidelines apply generally to 'Adults' without defining a difference based on gender. The only formal gender-specific restriction formally cited in safety documents is the prohibition of use during pregnancy.

Q: Is the onset time of Erfuzide affected by food?

The official administration protocol states that the medicine is preferably taken before the main meals. This specific timing is part of the formal administration guidance.

Q: What is the shelf life of Erfuzide?

Official storage information defines a specific in-use shelf-life for the oral suspension once the bottle is opened (e.g., 28 days). This information, along with general storage rules, is necessary to maintain the quality and integrity of the product.

How should Erfuzide be stored and disposed of?

Storage and Environmental Requirements

Erfuzide must be stored at controlled room temperature, typically not exceeding 25 C or 30 C, according to official labeling. The medication must be protected from environmental factors; specifically, do not refrigerate or freeze the product. It must be kept in its original container with the lid tightly closed to maintain product integrity and provide protection from light and moisture.

Stability and Child Safety

For the oral suspension, a specific in-use shelf-life is defined in the product information after the bottle is opened (e.g., 28 days), and any remaining suspension must be discarded after this period. All forms of the medicine must be stored out of the sight and reach of children.

Official Disposal Instructions

Unused or expired Erfuzide should not be disposed of in household waste or wastewater. The product must be returned to a pharmacy or a designated collection point, or disposed of in accordance with local regulations for pharmaceutical waste.

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

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