Ercefuryl

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Ercefuryl

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Medically reviewed

Rosario Oropesa

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 Ercefuryl

Ercefuryl is a pharmaceutical preparation defined by its active chemical entity, Nifuroxazide, and its specific, localized action within the gastrointestinal tract.

Property Description
Active ingredient Nifuroxazide (INN)
Form Oral formulations (Hard capsules, Suspension/Syrup)
Pharmacological class Intestinal Antiinfective (Intestinal Antiseptic)
General purpose Provides localized antimicrobial action in the gut
Origin Synthetic organic compound (Nitrofuran derivative)

Ercefuryl: Identity, Active Ingredient, and Origin

Ercefuryl is the brand name for the medicinal product containing Nifuroxazide (INN), a specialized antimicrobial agent. Nifuroxazide is classified as a synthetic organic compound, confirming its laboratory-created origin as a derivative of the nitrofuran chemical group. The medicine is designed for oral administration and is available in forms such as 200 mg hard capsules and an oral suspension, allowing for use across different patient groups including adults and children. The composition is straightforward, utilizing Nifuroxazide as the single active component responsible for the drug's intended function.


What Type of Medicine is Nifuroxazide (Ercefuryl)?

Ercefuryl is defined as an Intestinal Antiinfective, an important distinction within the broader class of antimicrobials. This classification highlights the drug’s general purpose: to combat acute gut disturbances presumed to be of bacterial origin, such as traveler's diarrhea. As a specialized Nitrofuran Antibiotic, Nifuroxazide exerts a bactericidal effect, meaning it actively kills susceptible bacteria by interfering with their essential processes, such as protein synthesis. Critically, its classification distinguishes it from systemic antibiotics because Nifuroxazide is poorly absorbed into the bloodstream after consumption, ensuring that its antimicrobial action is highly localized to the gastrointestinal lumen, facilitating a focused approach to restoring gut balance.

What side effects are possible with Ercefuryl?

Possible Side Effects and Safety Information

The safety profile of Ercefuryl (nifuroxazide) is generally characterized by adverse reactions localized to the gastrointestinal tract, consistent with its limited systemic absorption. Official regulatory documents outline both common and rare, but more serious, safety considerations.


Adverse Reactions Summary

Adverse reactions are predominantly classified by system-organ class, with the gastrointestinal system and the immune system being the primary focuses of safety monitoring.

System-Organ Class Frequency Classification Adverse Reaction
Gastrointestinal Common Nausea, vomiting, abdominal discomfort/pain
Immune System Rare/Not Known Allergic reactions (rash, urticaria, pruritus, angioedema)
Immune System Serious/Rare Anaphylaxis (severe, life-threatening allergic reaction)

The incidence of severe reactions, such as anaphylaxis, requires immediate medical attention and drug discontinuation. Other serious concerns mentioned in regulatory texts include potential hepatic issues (e.g., jaundice).


Safety Restrictions and Contraindications

Contraindications include known hypersensitivity to nifuroxazide, nitrofuran derivatives, or any excipients in the formulation. Caution is warranted in patients with inherited conditions like fructose intolerance, glucose-galactose malabsorption, or sucrase-isomaltase deficiency.

Key limitations on use include:

  • Maximum Treatment Duration: Treatment is typically limited and must not exceed 7 days.
  • Alcohol Restriction: Concurrent consumption of alcohol is strictly discouraged.
  • High Protein-Binding Drugs: Caution is advised with co-administration of anticoagulants (such as warfarin) due to potential competition for plasma protein binding, which may necessitate close monitoring.

Use of nifuroxazide is not recommended during pregnancy or breastfeeding due to insufficient data to establish safety in these populations.

Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory profile for Ercefuryl (Nifuroxazide) overdose is defined by the clinical manifestations and the requirement for immediate emergency response, as detailed in the Summary of Product Characteristics (SmPC) and official labeling.

Over-ingestion of the medication is primarily documented to present with gastrointestinal symptoms, including nausea, vomiting, and abdominal pain. While Nifuroxazide is a poorly absorbed intestinal antiinfective, the overdose state may also lead to serious systemic symptoms such as difficulty breathing and fainting (syncope), which affect the central nervous and respiratory systems.


Required Emergency Actions

Action Focus Official Regulatory Statement
Immediate Action Mandate Seek immediate medical attention for any suspected overdose [Source 1].
Symptom Trigger Contact emergency services if severe manifestations such as difficulty breathing or fainting occur.
Antidote Status No specific antidote is known for Nifuroxazide overdose.

In the event of suspected overdose, the required management is strictly defined as symptomatic and supportive treatment. This means that hospital monitoring and observation may be required to stabilize the patient. No population-specific warnings regarding altered overdose severity in special groups, such as those with renal or hepatic impairment, are explicitly documented in the official overdose sections.

Therapeutic Uses of Ercefuryl

What Ercefuryl Treats: Main Uses and Benefits

Ercefuryl (Nifuroxazide) is commonly used to help manage symptoms associated with acute gastrointestinal infections, particularly infectious diarrhea. This application is relevant across therapeutic contexts involving heightened systemic burden. The therapeutic role of this localized Intestinal Antiinfective is recognized for these applications.

This medication is relevant for managing symptom clusters that may become intense or disruptive, such as those related to bowel instability. This includes helping to address the symptoms related to hyper-frequency of unformed stools and assisting with the management of altered stool consistency. The medication is generally used in conditions presenting with acute diarrheal episodes, relevant for conditions characterized by periods of heightened symptoms, such as traveler's diarrhea.

It also assists in addressing associated symptoms that interfere with daily functioning, such as abdominal spasms, cramping, and pain. This provides support that helps ease the overall symptom burden, assisting patients with maintaining functional stability when symptoms interfere with routine activities. It is commonly used in both adult and pediatric patients experiencing these acute manifestations.


Quick Fact: Use in Acute Diarrheal Episodes

The medicine is commonly used as a short-term intervention in acute conditions characterized by temporary physiological imbalance, providing supportive relief that helps patients cope more steadily with symptom fluctuations.

Eligibility and Restrictions for Use

The eligibility for using Ercefuryl (Nifuroxazide) is governed by clear regulatory guidelines that define who can and cannot use the medicine, based on absolute contraindications and specific population constraints detailed in official prescribing information.

Contraindicated Populations

Official regulatory documents identify several groups for whom the medicine is contraindicated, meaning it must not be used:

  • Individuals with known hypersensitivity to Nifuroxazide or any other Nitrofuran derivative.
  • Patients with diagnosed Glucose-6-phosphate dehydrogenase (G6PD) deficiency.
  • The medicine is strictly contraindicated in newborns and premature infants (children aged 0 to 1 month).
  • Use is generally restricted by age, such as in children under 15 years for the 200 mg capsule formulation.

Age-Related and Conditional Use

Approved use is typically limited to adults and adolescents over 15 years, or children over 2 years for the oral suspension, depending on the region and specific product label. Use is not recommended in several key circumstances:

  • Pregnancy: Use should be avoided as a precautionary measure.
  • Lactation: Use is possible only for short-term treatment under caution.
  • Patients with existing severe hepatic or renal impairment should proceed with caution, as noted in official prescribing information.

What should I know about interactions with other medicines?

The interaction profile for Ercefuryl (Nifuroxazide) is distinct because the drug is primarily localized to the gastrointestinal tract and is poorly absorbed into the bloodstream. This pharmacokinetic characteristic minimizes the potential for systemic drug-drug interactions involving major metabolic pathways like the CYP enzyme system or drug transporters. Consequently, official regulatory documentation primarily addresses specific pharmacodynamic incompatibilities and prohibitions.


Prohibited Combinations and Substance Incompatibilities

Official labeling specifies that co-administration is strictly incompatible for several substance categories. The incompatibility with CNS depressants (Central Nervous System Depressants) is based on the official regulatory acknowledgment of a risk for pharmacodynamic reinforcement, meaning a potential for additive central effects. The risk profile also extends to co-ingestion with Alcohol, given the drug's incompatibility with anti-abuse agents.

Category Official Restriction/Incompatibility
Medicines Anti-abuse drugs (e.g., Disulfiram)
CNS Activity CNS depressants
Substance Alcohol (Due to the documented risk profile)

No official documentation lists interactions that affect the systemic exposure of Nifuroxazide or a co-administered drug. The regulatory profile also includes a documented non-interaction: co-administration with the antidiarrheal Racecadotril is formally shown not to modify the kinetics of Racecadotril. No mandatory timing or separation requirements are specified in the official labeling.

Mechanism of Action

Ercefuryl, with the active substance nifuroxazide, exerts its primary effect within the gastrointestinal lumen due to its minimal systemic absorption. Its local mechanism of action targets bacterial pathogens through a cascade initiated by the nitroreductase enzymes present in susceptible microbial cells.

Nifuroxazide acts as a substrate for these bacterial enzymes, which catalyze the reduction of its 5-nitro group. This reductive biotransformation generates highly reactive intermediates, including hydroxylamine and nitrofuran-derived radical species, inside the microbial cell. These unstable metabolites function as non-specific alkylating agents that covalently bind to and cross-link various critical intracellular macromolecules. The resulting molecular damage involves multiple biological targets, notably bacterial DNA, ribosomal proteins, and essential enzymes of the tricarboxylic acid cycle. This broad-spectrum alkylation and subsequent damage to DNA structure and protein function disrupts vital molecular pathways, specifically inhibiting microbial protein synthesis and cellular respiration. The cumulative intracellular consequences of this widespread molecular modification lead to a bacteriostatic effect, preventing microbial proliferation within the intestinal tract.

Dosage and Administration Information

Official Administration Guidelines

Administration Scope

Route of administration: The only officially approved route is oral administration, using either hard capsules (200 mg) or the oral suspension formulation. Dosing schedule: The standard adult regimen requires a total daily intake of 800 mg, which is administered as 200 mg per dose. Timing in relation to meals (if applicable): Official instructions generally recommend that the medication be administered with food or meals. Preparation requirements (if applicable): The hard capsules must be swallowed whole. The oral suspension requires careful use of a suitable measuring device to ensure dosage accuracy, particularly in pediatric patients. Age-group administration rules: The oral suspension is the designated formulation for children (typically starting from 2 years of age). Capsule use is reserved for older adolescents and adults. Missed-dose rules: Specific, universally documented rules are not standardized across all sources; adherence to the prescribed frequency is emphasized. Special procedural conditions: Use is restricted to a short-term course for acute episodes. The maximum duration of treatment is strictly limited and, for the common adult regimen, generally does not exceed 3 days.


Instruction Classifications (High-Level)

Administration method type (oral / IV / topical / inhaled / etc.): Oral. Frequency pattern (daily / weekly / as-needed, etc.): Daily, typically administered four times daily (Q.I.D.). Use-context constraints: Acute, time-limited use with a mandatory maximum duration specified on the product label.


Resulting Procedural Structure

Official step sequence:

  • The appropriate formulation (capsule or accurately measured suspension) is taken orally.
  • The dose is administered four times daily with food, following a consistent schedule.
  • The administration is ceased once the short-term course, often 3 to 7 days, is completed.

Connection to the overall use protocol (2–4 sentences):

The official instructions establish a structured protocol that relies on the oral route and a divided daily dose (200 mg Q.I.D.) to maintain local concentration within the gastrointestinal tract. The defined use of the suspension for younger patients and the mandatory time limit for all users govern the drug's administration.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Ercefuryl

This overview describes the types of research and studies that have been conducted on Ercefuryl (Nifuroxazide). It provides an overview of the evidence landscape and areas of uncertainty, without providing any medical recommendations or clinical advice.


Evidence for Use in Acute Diarrheal Syndrome

Research focused on acute diarrheal syndrome, including what is commonly known as Traveler's Diarrhea, has primarily used short-term Randomized Controlled Trials (RCTs). These studies included both adult and pediatric patients who were experiencing a sudden onset of symptoms. Research in these settings was conducted to measure patient-reported outcomes related to functional imbalance, and explored how symptoms evolved over the study period. These outcomes included the time it took for the last unformed stool, changes in the daily frequency of bowel movements, and documentation of other outcomes related to physical discomfort, such as abdominal pain and cramping.

Studies report that patterns were observed in the study populations regarding the duration of the diarrheal episode and the measured changes in stool consistency within the short follow-up period. Findings describe patterns observed in the studies where patients reported how symptoms evolved, but these results reflect the specific conditions under which they were conducted. This evidence contributes to understanding episodic or acute changes that occur during these temporary physiological imbalances.


Comparison Studies and Placebo-Controlled Trials

Clinical studies have often included arms designed to explore differences when Nifuroxazide was compared to an inactive placebo or to other active treatments. These comparisons provided a context regarding how the measurements of outcomes describing episodic or acute changes varied among different groups. Studies monitored short-term symptom changes under controlled conditions. The reports describe group patterns, such as how changes in symptom measurements were tracked in the Nifuroxazide group compared to the placebo or comparator groups.


Duration of Study and Long-Term Follow-up

The trials conducted for acute diarrhea are characterized by their short-term nature, reflecting the common trajectory of the condition itself. Therefore, the follow-up durations were limited to only a few days, which is consistent with research focusing on episodes where symptoms become more noticeable and require immediate management. Long-term effects are not fully established, and there is limited information for long-term outcomes or the maintenance of functional stability over extended periods. The evidence landscape currently does not support conclusions about outcomes monitored beyond the acute phase, and long-term outcomes are not well characterized.


Current Evidence Gaps and Areas of Uncertainty

A primary limitation of the research landscape is that the results apply only to the populations studied and the defined clinical contexts. The evidence quality varies across studies, partly because some core trials is older. These factors contribute to some heterogeneity in the reported measurements. Furthermore, research was studied for short-term symptom changes in less-established areas, such as research examining it as an adjunctive treatment for mild to moderate Ulcerative Colitis. However, this research is limited to small, exploratory pilot studies where certainty remains low and the data are still emerging.

Frequently Asked Questions (FAQ)

Common questions about Ercefuryl (FAQ)


Q: What is the difference between Ercefuryl and common probiotics?

Official information indicates that Ercefuryl is classified as an Intestinal Antiinfective, meaning it is an antimicrobial agent intended to act locally in the gut. Probiotics, conversely, are live organisms often used to support the natural balance of gut bacteria. The drug’s regulatory classification reflects its primary function as a local antimicrobial agent.


Q: Is Ercefuryl known to cause a reaction if taken with alcohol?

Yes, official safety information documents a restriction on the consumption of alcohol while using this medicine. This is documented due to a potential incompatibility with anti-abuse agents, which presents a known risk profile.


Q: Can Ercefuryl interact with medications for chronic conditions like high blood pressure?

Because the medicine is poorly absorbed into the bloodstream, the potential for widespread interactions with systemic drugs (like those for high blood pressure) is minimized. However, regulatory documents advise that caution is necessary with co-administration of certain medications, such as anticoagulants (e.g., warfarin), due to potential competition for plasma protein binding.


Q: What information is available about Ercefuryl use in pregnant women?

According to official regulatory sources, the medicine is not recommended for use during pregnancy or breastfeeding. This precautionary position is based on the statement that there is insufficient data to support use during these periods.


Q: What is the general expectation for the duration of Ercefuryl treatment?

Treatment is intended only for short-term use during acute episodes, as directed by official product information. While the maximum duration of treatment is strictly limited to generally not exceed 7 days, the common recommended regimen is often completed within 3 days.


Q: What is the definition of the term 'use conditions' for Ercefuryl?

In official regulatory terms, the 'use conditions' for Ercefuryl define the specific context in which the medicine is approved. These conditions stipulate a short-term course for acute diarrheal episodes presumed to be of bacterial origin, reflecting the requirement for time-limited use.


Q: Is it common to feel stomach discomfort when starting Ercefuryl?

Adverse reactions for this medicine are mostly localized to the gut. Official safety summaries classify reactions such as nausea, vomiting, and abdominal discomfort/pain as common side effects of the active substance.


Q: What is the difference in safety profile between Ercefuryl tablets and suspension?

Official safety summaries list adverse reactions based on the active substance, Nifuroxazide, in general, without outlining distinct safety profiles based solely on the formulation. The official documentation indicates that the formulations are primarily distinguished by their designated use in different age-groups.


Q: Is Ercefuryl typically used for acute (short-term) or chronic (long-term) issues?

The medicine is strictly intended for acute diarrheal episodes and its use is regulatory restricted to a short-term course. Official documentation does not support its use for chronic or long-term issues.


Q: Are there research studies comparing Ercefuryl to a placebo?

Yes, clinical trials conducted on the drug have included different groups for comparison. These research arms were designed to explore differences in measured outcomes when Nifuroxazide was compared to an inactive placebo or to other active treatments.


Q: What happens if a dose of Ercefuryl is missed?

Official patient information generally advises that if a dose is missed, and it is close to the next scheduled dose, the prescribed course should continue with the next scheduled dose. Double doses are not recommended to compensate for a missed dose.


Q: Can Ercefuryl capsules be opened and mixed with food or liquid?

Official instructions specify that the hard capsules must be swallowed whole with a full glass of water. They should not be broken or opened.


Q: Is Ercefuryl used outside of [Country/Region]? (e.g., Europe, Asia)

The active ingredient, Nifuroxazide, is authorized under various brand names, including Ercefuryl, in multiple countries across different regions. This indicates that its use is not limited to a single geographic region.


Q: Does Ercefuryl require any special monitoring while being used?

Routine, general monitoring is not detailed in the product information. However, official warnings state that close monitoring is advised if the medicine is taken concurrently with certain drugs, such as anticoagulants (like warfarin).


Q: Are there specific food types that should be avoided while taking Ercefuryl?

The medicine is generally recommended to be taken with food, and no specific food types are listed for avoidance in the official interaction profile. The only substance with a strict restriction is alcohol, due to a documented risk of incompatibility.


Q: Why is Ercefuryl sometimes described as an 'intestinal antiseptic'?

While the drug is formally classified by regulatory bodies as an Intestinal Antiinfective, the term 'intestinal antiseptic' is often used descriptively. This is because the medicine provides a localized antimicrobial action in the gut with negligible systemic absorption, similar to how an antiseptic cleans locally.


Q: How does the action of Ercefuryl differ from systemic antibiotics?

The main difference is based on absorption into the body. Ercefuryl is poorly absorbed into the bloodstream after consumption, meaning its antimicrobial effect is highly localized to the gastrointestinal tract. Systemic antibiotics, in contrast, are absorbed and circulated throughout the body.


Q: Is Ercefuryl effective against parasitic infections?

Official regulatory indications specify that the medicine is for acute diarrhea presumed to be of bacterial origin. Its labeling does not include indications for parasitic infections.


Q: What are the eligibility restrictions for using Ercefuryl?

The medicine is strictly contraindicated in individuals with known hypersensitivity to the active substance (Nifuroxazide) or any nitrofuran derivative. It is also contraindicated in patients with Glucose-6-phosphate dehydrogenase (G6PD) deficiency and is strictly restricted in newborns and premature infants (0–1 month).


Q: Are there specific tests that a doctor might perform before prescribing Ercefuryl?

Official contraindications note that the medicine must not be used in patients with diagnosed Glucose-6-phosphate dehydrogenase (G6PD) deficiency. This means a healthcare provider may choose to confirm the G6PD status before prescribing the medication.


Q: Is there any research evidence concerning Ercefuryl use in patients with kidney problems?

Official prescribing information advises that patients with existing severe renal impairment should proceed with caution. This caution indicates that the drug’s use in this population is a factor that must be considered during the prescribing process.


Q: Does the time of day when Ercefuryl is taken matter?

Regulatory instructions state the medicine must be administered a total of four times daily (Q.I.D.) with food, following a consistent schedule. Specific time-of-day constraints (e.g., 'must be taken at 8 AM') are not detailed in official guidance.


Q: Are there any official safety classifications or pregnancy categories for Ercefuryl?

While regulatory documents state the drug is 'not recommended' and 'avoided' during pregnancy, they do not use a standardized letter-based US FDA pregnancy category system. The statements serve as a precautionary measure due to limited safety data.


Q: Can Ercefuryl be used by people who are lactose intolerant?

Official contraindications list inherited conditions like fructose intolerance, glucose-galactose malabsorption, and sucrase-isomaltase deficiency. People with lactose intolerance should check the product's official label for any lactose-containing excipients.


Q: Can Ercefuryl be taken alongside other medications that treat digestive issues?

Official regulatory information documents a specific non-interaction: co-administration with the antidiarrheal drug Racecadotril is formally shown to not modify the kinetics (movement in the body) of Racefuryl.


Q: What is the trade name for Ercefuryl's active ingredient in the US or UK?

The active substance is Nifuroxazide, which is the internationally recognized generic name. While the active substance is internationally recognized, the specific trade name Ercefuryl is not authorized in the US or UK.

How should Ercefuryl be stored and disposed of?

How to Store and Dispose of Ercefuryl

Storage of Ercefuryl (Nifuroxazide) must strictly comply with official regulatory labeling to maintain product stability and integrity. The medicine must be stored at a temperature below 30 C and should not be placed in a freezer or in damp environments.

Storage and Protection

Requirement Description
Temperature Store below 30 C (at room temperature).
Protection Keep in a dry place, away from light, and in the original container.
Safety Must be stored out of the reach and sight of children.
Stability Do not use after the expiration date printed on the package.

️ Disposal

Any unused or expired medicine must be disposed of in accordance with local regulations as mandated by official drug labeling. The medicine should not be thrown into household trash or flushed down the toilet, to prevent environmental contamination.

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

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