Etiltox

Quick links to important sections

Etiltox

Treatment option: Alcoholism

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 Etiltox

Property Description
Active Ingredient Disulfiram (INN)
Form Oral dosage form (Tablet)
Pharmacological Class Alcohol Antagonist Drug (Aldehyde Dehydrogenase Inhibitor)
Common Use Alcohol deterrent in Alcohol Use Disorder (AUD) treatment
Origin Synthetic compound

What Type of Drug is Etiltox?

Etiltox is a specific trade name for a prescription-only medication that utilizes the single active ingredient Disulfiram. This agent is classified as an alcohol antagonist drug, specifically functioning as an alcohol-aversive agent by inhibiting the Aldehyde Dehydrogenase (ALDH) enzyme. This specific mechanism of enzyme inhibition is clinically recognized as a method for creating a reliable physical deterrent. As a synthetic compound, Etiltox provides a standardized formulation of Disulfiram, which is key to its predictable use in medical protocols.


General Purpose of the Single-Ingredient Antagonist

The primary purpose of Etiltox is to ensure abstinence from alcohol by providing a powerful physical defense mechanism. It is used as a foundation of medication-assisted treatment (MAT) for alcohol use disorder (AUD) and chronic alcoholism. The drug is highly distinct from other AUD medications, as its mechanism focuses on generating an acute, highly uncomfortable physical reaction when any ethanol is consumed. This makes Etiltox particularly suitable for individuals who require strong reinforcement in their decision to maintain sobriety. Disulfiram is recognized for its effectiveness in facilitating total abstinence. The medication is commonly supplied as an oral tablet, a single-ingredient product designed for predictable delivery of the antagonist.

What side effects are possible with Etiltox?

Possible Side Effects and Safety Information

The safety profile of Etiltox (Disulfiram) is defined by two primary risk categories documented in official regulatory labeling: adverse reactions from the drug itself and the severe Disulfiram-Alcohol Reaction (DAR) that results from any alcohol consumption.


Documented Adverse Reactions to Etiltox Alone

Adverse reactions that occur without concurrent alcohol exposure are classified by the physiological systems they affect:

  • Hepatobiliary Disorders: Documented risks include hepatitis (cholestatic and fulminant) and hepatic failure, which may develop even after many months of therapy. This serious adverse reaction requires vigilance.
  • Nervous System Disorders: Effects reported include peripheral neuritis, polyneuritis, peripheral neuropathy, and optic neuritis. Other general reactions noted are transient mild drowsiness, fatigability, and headache, which often resolve spontaneously during the first two weeks of therapy.
  • Other Reactions: Include acneform eruptions, allergic dermatitis, a metallic or garlic-like aftertaste, and impotence.

The Disulfiram-Alcohol Reaction (DAR)

The consumption of alcohol, even in small amounts, will predictably cause the DAR. This reaction can occur up to 14 days after discontinuing the medication. Symptoms include flushing, throbbing headache, nausea, copious vomiting, hypotension, and tachycardia.

In severe reactions, the documented outcomes include life-threatening events such as cardiovascular collapse, arrhythmias, myocardial infarction, convulsions, and death.


Safety Considerations

Official labeling mandates that Etiltox is contraindicated in patients with conditions like severe myocardial disease or psychoses. The drug requires extreme caution in individuals with pre-existing conditions such as hepatic insufficiency, epilepsy, or diabetes mellitus. Safety is not established for pediatric patients, pregnant women, or nursing mothers.

Overdose and Emergency Response

Overdose and When to Seek Help

Immediate medical attention is required for any suspected overdose or severe reaction. Call emergency services (such as 911) or a Poison Control center right away if too much of the medication is used, or if any reaction to alcohol is suspected, as these situations can be life-threatening.

Disulfiram-Alcohol Reaction

The most critical risk is the reaction caused by consuming alcohol or alcohol-containing products while taking this medication, which may occur for up to 14 days after stopping the drug. Symptoms begin quickly and may include intense flushing of the face, throbbing headache, severe nausea, copious vomiting, sweating, chest pain, palpitations, rapid heartbeat, trouble breathing, and low blood pressure. Severe reactions can lead to cardiovascular collapse, respiratory depression, seizures, unconsciousness, and death.

Acute Overdose

Overdose from the medication alone, typically due to ingestion of large amounts, is generally characterized by primarily neurological symptoms. These may include profound drowsiness, delirium, confusion, lethargy, loss of coordination, seizures, and coma. Treatment for an acute overdose is symptomatic and supportive, and may involve measures to manage blood pressure or the use of activated charcoal.

Therapeutic Uses of Etiltox

What Etiltox Treats: Main Uses and Benefits

Etiltox is a medication focused on providing essential therapeutic support for individuals committed to recovery from Alcohol Use Disorder (AUD) and chronic alcoholism. It serves as an element in treatment strategies aimed at achieving and maintaining an alcohol-free life. Disulfiram is used for the management of chronic alcoholism.

Supporting Abstinence and Behavioral Control

Etiltox is primarily used to address the chronic clinical condition of alcohol dependence. It is applied in situations where patients require a consistent deterrent to support their goal of total sobriety. This medication assists with managing the challenging behavioral symptom clusters of AUD, specifically compulsive alcohol seeking, impaired control over drinking, and the pressure associated with strong cravings.

One of the benefits it provides is supportive external reinforcement that assists the patient's commitment, generally contributing to the effectiveness of abstinence programs.


Quick Fact: Management of Compulsive Use

The medication is applied to help manage the urge to consume alcohol and provides a reliable physical deterrent, which is commonly used during the maintenance phase of recovery to support patients who require consistent help in avoiding relapse.

Regulatory References

  1. NIH MedlinePlus overview

Eligibility and Restrictions for Use

Who Can and Cannot Use Etiltox?

The population eligible for Etiltox (Disulfiram) is defined by strict regulatory guidelines established by authorities such as the FDA and EMA, focusing on contraindications and patient status. The medication is primarily for adults committed to abstinence from alcohol, provided they have maintained alcohol abstinence for at least 12 hours prior to initial use.

Absolute Contraindications (Must Not Use)

Contraindicated Group/Condition Status
Alcohol intoxication or recent consumption Absolute Prohibition
Severe myocardial disease or coronary occlusion Absolute Prohibition
Psychoses or severe mental illness Absolute Prohibition
Hypersensitivity to Disulfiram or thiuram derivatives Absolute Prohibition
Current or recent use of metronidazole or paraldehyde Absolute Prohibition

Age and Physiological Restrictions

  • Pediatric Patients: Safety and effectiveness have not been established in patients under 18 years of age.
  • Pregnant Individuals: Safe use has not been established; use is only permitted if potential benefits outweigh risks.
  • Nursing Mothers: The medicine should not be given.
  • Organ Function: Use with extreme caution is required in patients with hepatic insufficiency (liver problems) or chronic nephritis (kidney problems). Caution is also necessary for those with diabetes mellitus or epilepsy.

What should I know about interactions with other medicines?

Etiltox (Disulfiram) has a highly specific interaction profile documented in regulatory sources, structured by its core pharmacodynamic effect and its influence on drug metabolism.

Formal Contraindicated Combinations

Co-administration is strictly prohibited with alcohol and all alcohol-containing preparations, including cough syrups, tonics, and aftershave lotions. This restriction is due to the severe and potentially life-threatening Disulfiram-Alcohol Reaction (DAR). The drug is also formally contraindicated with Metronidazole and Paraldehyde, as these combinations carry a specific, documented risk of confusion or psychotic reactions.


Pharmacokinetic and Exposure-Altering Interactions

Regulatory data documents that Disulfiram can inhibit certain liver enzymes, which decreases the metabolic rate of other medications. This reduction in clearance leads to increased plasma concentrations and a higher risk of toxicity for co-administered drugs. Medications affected include Phenytoin, Warfarin and other oral anticoagulants, certain Tricyclic Antidepressants, and Benzodiazepines like Diazepam. The label notes that this increase in exposure requires clinical vigilance.


Timing and Substance Restrictions

Due to the persistence of the interaction, a patient must have abstained from alcohol for at least 12 hours prior to starting treatment. The potential for the DAR may remain for up to 14 days after the medication is discontinued. Exposure to Ethylene Dibromide vapors is also restricted due to a documented toxic interaction.

Mechanism of Action

Irreversible Inhibition of Aldehyde Dehydrogenase

Etiltox (Disulfiram) works by interfering with the body's oxidative metabolism of ethanol. Its primary action is the irreversible inhibition of the Aldehyde Dehydrogenase (ALDH) enzyme, which is predominantly localized in the liver. ALDH is essential for the second step of ethanol metabolism, responsible for converting the toxic intermediate, acetaldehyde, into acetic acid. By binding covalently to a critical thiol group on the ALDH enzyme, Etiltox functionally abolishes the body's capacity to complete this detoxification process.

Acetaldehyde Toxicity and Vascular Perturbation

When ethanol is consumed, the resulting rapid and massive accumulation of acetaldehyde becomes the effector molecule for the drug's mechanism. High concentrations of this toxic metabolite trigger a severe physiological cascade: it causes widespread peripheral vasodilation (widening of blood vessels), leading to a rapid drop in blood pressure (hypotension). This vascular perturbation engages the Autonomic Nervous System, resulting in a compensatory reflex tachycardia (rapid heart rate). The combination of these events defines the resulting acute systemic response.

⏳ Mechanism Persistence

The persistence of the mechanism is due to the irreversible nature of ALDH inhibition. Restoration of metabolic function requires the body to synthesize new ALDH enzyme, a process that can take up to one to two weeks, thus allowing the mechanism to remain functionally active long after the drug itself has been cleared from the body.

Dosage and Administration Information

How Etiltox is Used

Etiltox (Disulfiram) is administered exclusively by the oral route as a tablet for the long-term management of alcohol use disorder. The medication is prescribed as a continuous, once-daily regimen that may be necessary for months or even years to support sustained abstinence.

A critical procedural requirement for initiating therapy is that the first dose must not be administered until the patient has achieved and confirmed a period of at least 12 hours of abstinence from alcohol. The overall administration pattern is structured into an initial phase followed by a daily maintenance dose, summarized below:

Regimen Phase Typical Daily Dose Duration
Initial Maximum of 500 mg 1 to 2 weeks
Maintenance Average of 250 mg (Range 125-500 mg) Continuous (Long-term)

The maintenance dose range may fluctuate between 125 mg and 500 mg, depending on individual requirements. To ensure reliable administration, the tablets may be crushed and mixed with liquid such as water or juice. The once-daily dose is typically taken in the morning, but administration may be shifted to bedtime if the patient reports experiencing sedation. Regarding population-specific instructions, the safety and effectiveness of Etiltox have not been established for pediatric patients. Dosing for older adults is recommended to be cautious, generally starting at the low end of the prescribed maintenance range.

Recent Clinical Evidence

Research evidence / Overview of Studies for Etiltox


Evidence for Use in Maintaining Abstinence in Alcohol Use Disorder (AUD)

The research into Etiltox focuses on exploring its role in abstinence maintenance from alcohol as part of managing Alcohol Use Disorder (AUD). Studies conducted include various forms of Randomized Controlled Trials (RCTs), as well as broader systematic reviews and meta-analyses that pool data from multiple clinical sites. The research examined adult patients motivated toward sobriety, many of whom were also receiving counseling or other psychosocial support. The use of Etiltox was evaluated in the context of total sobriety.

In these studies, researchers monitored specific outcomes related to consumption. They focused on outcomes related to continuous abstinence (remaining alcohol-free) and the time elapsed before a relapse (time to the first drink). Research also explored measurements of the overall number of drinking days during the monitored period. These studies help show what has been observed so far regarding the patterns of sobriety maintenance in the studied populations.


Comparison of Study Designs: Supervised vs. Traditional Trials

Research has explored how outcomes was studied in different administration contexts. Some trials were conducted under open-label conditions, or were structured with supervised medication intake. These studies consistently described patterns of greater continuous abstinence among participants.

In contrast, findings were sometimes mixed when evaluated in traditional double-blind, placebo-controlled trials. These designs attempt to hide the identity of the medication from both the patient and the researcher. Because Etiltox causes a physical reaction when alcohol is consumed, maintaining this "blinding" presents a unique methodological challenge in the research.


What Remains Uncertain and Research Gaps

Despite the existing body of research, several aspects of Etiltox use are either not fully established or present inconsistent findings across different studies. Findings were often inconsistent across studies, particularly depending on whether administration was supervised.

Research describes patterns linked to patient compliance and supervision, and uncertainty remains regarding outcomes without supervision. Furthermore, sample sizes were modest in some older studies, and the challenge of conducting effective double-blind trials continues to introduce methodological limitations. Long-term effects are not fully established by prospective, controlled trials; follow-up durations were limited in many core studies.

Key Studies & References

  1. Disulfiram in the management of alcohol dependence: A comprehensive clinical review
  2. ANTABUSE® (Disulfiram Tablets USP) IN ALCOHOLISM - U.S. Prescribing Information

Frequently Asked Questions (FAQ)

Common questions about Etiltox (FAQ)


Q: Are the side effects of Etiltox temporary?

Some side effects, such as mild drowsiness, headache, and fatigue, are noted in official labeling to often resolve on their own within the first two weeks of starting therapy. However, more serious adverse reactions like hepatic failure (severe liver damage) and nervous system disorders like neuropathy may develop even after many months of therapy and are serious and persistent.


Q: What should I do if I miss a dose of Etiltox? (General concept)

Regulatory patient guidance typically describes a standard procedure for a missed dose: taking it as soon as a patient remembers, unless it is close to the time for the next scheduled dose. It is described that the next dose should not be doubled to make up for the one that was missed, as this could increase the potential for side effects. When uncertain about timing, the general instruction is to wait and take the next dose as scheduled.


Q: Can Etiltox be taken with food?

Official patient information indicates that taking Etiltox tablets with food may help to reduce the risk of potential stomach upset. The prescribing information also notes that the tablets may be crushed and mixed with water or juice to ensure reliable administration.


Q: Does Etiltox interact with common over-the-counter pain relievers?

Regulatory guidance does not specifically name all common over-the-counter pain relievers. Etiltox is known to inhibit certain liver enzymes that metabolize other drugs. Pain relievers like Acetaminophen (Paracetamol) are not listed as having a direct contraindication with Etiltox. This information describes the drug's properties and does not replace the requirement for individual guidance on drug interactions from a medical professional.


Q: Is Etiltox safe for older adults?

The official prescribing information advises that dose selection for older adults should be conducted with caution. This typically involves starting at the low end of the prescribed dosing range, as this population may experience a greater frequency of reduced organ function that requires consideration.


Q: Will Etiltox make me feel different or 'high'?

Etiltox is not a drug that causes a 'high.' Side effects that have been reported include transient mild drowsiness or fatigue. Rare, serious adverse reactions such as confusion and psychosis have been documented in regulatory sources.


Q: Is Etiltox a controlled substance?

Official government classifications indicate that Etiltox (Disulfiram) is a prescription-only medication but is not classified as a controlled substance by the U.S. Drug Enforcement Administration.


Q: What if Etiltox doesn't seem to be working for me?

The official labeling notes that if patients report being able to consume alcohol without experiencing the expected reaction, they must be presumed to be disposing of their tablets without actually taking them. The drug's therapeutic effect is dependent on compliance; therefore, prescribing information sometimes recommends observation of the daily dose administration before concluding the drug is ineffective.


Q: Are there any foods I should avoid when taking Etiltox?

Patients must strictly avoid alcohol and all alcohol-containing products, including some foods and non-beverage liquids. Official sources advise avoiding cough syrups, tonics, certain flavorings, and aftershave lotions that contain alcohol, as even small amounts can trigger a severe reaction.


Q: Does Etiltox affect mental clarity?

Adverse reactions noted in official documents include rare but serious psychological effects such as psychosis and loss of memory. Furthermore, confusion has been reported when taken with certain contraindicated medications. The appearance of unusual changes in mental state is a serious adverse reaction that regulatory bodies advise should be communicated to a medical provider.


Q: What is the half-life of Etiltox? (General pharmacokinetics)

Pharmacokinetic data indicates that Etiltox is absorbed and cleared slowly. The half-life (the time it takes for half the drug to be eliminated from the bloodstream) is generally reported to be between 7.5 to 10 hours in adults. However, the mechanism of action remains active for up to two weeks.


Q: Why are there different strengths of Etiltox tablets?

Etiltox tablets are available in different strengths (e.g., 250 mg and 500 mg) to allow for flexibility in dosing. This permits the medical provider to administer a higher dose during the initial phase of treatment and then adjust to a suitable maintenance dose based on the patient's individual requirements.


Q: Does Etiltox interact with herbal supplements?

Official labeling does not list every herbal supplement. However, Etiltox is known to affect the liver enzymes that metabolize many drugs. Due to the potential for increased concentration, this combination may require specific monitoring by a healthcare professional.


Q: What is the molecular class of Etiltox?

The active ingredient in Etiltox, Disulfiram, is chemically identified as tetraethylthiuram disulfide. This compound belongs to the molecular class known as thiuram derivatives, which are often noted in chemical classification resources.


Q: Does Etiltox lose effectiveness over time?

Official labeling states that tolerance to the mechanism is not produced with prolonged use of Etiltox. Some sources even suggest that a patient may become more sensitive to alcohol over time while on the medication.


Q: Does Etiltox interact with caffeine?

Regulatory labels do not specifically name caffeine. However, caffeine is metabolized by liver enzymes that can be inhibited by Etiltox's primary metabolite. While not a formal contraindication, a potential increase in caffeine levels in the body is possible, suggesting that caution or monitoring may be appropriate.


Q: Are there any lifestyle changes recommended alongside taking Etiltox?

Official guidelines and research confirm that Etiltox is prescribed as one part of a comprehensive treatment plan. The medication is typically used alongside non-pharmacological support, such as counseling and behavioral therapy, to help manage alcohol use disorder.


How should Etiltox be stored and disposed of?

How to Store and Dispose of Etiltox (Disulfiram)

Official regulatory information requires strict adherence to specific storage and disposal protocols to maintain the drug's quality and ensure proper waste management.

Storage Requirements

Condition Category Official Requirement
Temperature Control Store below 25 C
Shelf Life 36 months in the original, unopened packaging
Packaging Must be kept in the original container (HDPE bottle with polypropylene cap)

Disposal Instructions

  • Any unused medicinal product or waste material must be disposed of in accordance with local requirements.
  • No specific hazardous-waste instructions are documented; general compliance with local waste protocol is required.

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

Available in countries:

Equivalent of Etiltox found in:

A-Z Index: