Disulfiram: Definition, Mechanism of Action, Uses, Dosage, Side Effects, Alternatives

Disulfiram, an FDA-approved medication for alcoholism, deters drinking by causing severe reactions when alcohol is consumed, working by inhibiting aldehyde dehydrogenase (ALDH) and preventing the conversion of acetaldehyde. In New Jersey, where 31,807 individuals sought alcohol addiction treatment in 2022, Disulfiram provides crucial support.

Side effects of disulfiram include headaches, fatigue, nausea, a metallic taste, skin issues, and flushing, while serious reactions involve liver problems, psychiatric disturbances, neurological symptoms, allergic responses, and cardiovascular complications.

If Disulfiram isn’t right for you, alternatives include naltrexone, acamprosate, and nalmefene. These medications use different mechanisms to reduce cravings and block alcohol’s effects, helping the 16.9% of New Jersey adults who report binge or heavy drinking. They’re available in injectable and oral formulations to meet your specific treatment needs.

What Is Disulfiram?

Disulfiram is an FDA-approved prescription drug for treating alcoholism and alcohol dependence. It inhibits acetaldehyde dehydrogenase, an enzyme in alcohol metabolism, causing severe reactions like nausea, vomiting, and headaches if you consume alcohol, which deters drinking. Marketed as Antabuse, it is one of three FDA-approved medications for chronic alcohol dependence and is part of addiction treatment plans that include therapy, detox, and support groups.

What Is the Mechanism of Action of Disulfiram?

The mechanism of action of disulfiram involves the irreversible inhibition of aldehyde dehydrogenase (ALDH), a crucial enzyme in alcohol metabolism. When alcohol is consumed after taking disulfiram, ALDH cannot effectively convert acetaldehyde, a toxic byproduct of alcohol breakdown, into acetate. 

This leads to the accumulation of acetaldehyde in the bloodstream, triggering the “disulfiram-ethanol reaction,” which results in severe adverse effects such as nausea, vomiting, flushing, tachycardia, and headaches. 

In New Jersey alone, excessive alcohol consumption accounts for an average of 3,008 deaths annually, with 54.8% of these deaths occurring due to chronic alcohol use. By seeking treatment with medications like disulfiram, you take a crucial step toward avoiding becoming part of this troubling statistic.

Disulfiram’s active metabolite forms a covalent bond with ALDH, rendering the enzyme inactive and creating a strong conditioned aversion to alcohol, thereby assisting individuals with alcohol use disorder in maintaining abstinence.

What Are the Uses of Disulfiram?

Disulfiram is primarily used for the treatment of alcohol use disorder (AUD), as approved by the FDA. It functions as a medication-assisted treatment that deters alcohol consumption by causing severe adverse reactions (such as nausea and vomiting) when alcohol is ingested. The medication works by irreversibly inhibiting aldehyde dehydrogenase (ALDH), creating a conditioned aversion to alcohol that has been shown to reduce relapse rates in individuals with chronic alcohol dependence.

Beyond treating AUD, Disulfiram has several emerging uses being explored in research. These include targeting aggressive leukemia, inhibiting inflammatory pathways like the NLRP3 inflammasome, and addressing other addictions (such as cocaine) or infections. While its effectiveness in treating alcohol use disorder is well-documented through decades of clinical use, researchers continue to investigate its potential for broader therapeutic applications.

What Is the Recommended Dosage of Disulfiram?

The recommended starting dose of Disulfiram is 500 mg orally once daily for the first 1–2 weeks, followed by a maintenance dose of 250 mg daily. The maintenance dose is adjusted within a range of 125–500 mg per day based on individual tolerance and clinical response, though 250 mg is standard.

What Should You Do If You Miss a Dose of Disulfiram?

Do take the missed dose of Disulfiram as soon as you remember, unless it is close to the time for your next scheduled dose. In that case, skip the missed dose and resume your regular dosing schedule. Never double the dose to compensate for a missed one, as this increases the risk of severe side effects or overdose.

What Are the Side Effects of Disulfiram?

The side effects of disulfiram include headaches, fatigue, nausea, a metallic taste in the mouth, skin issues, sexual dysfunction, and flushing or sweating. More serious adverse reactions involve liver problems, psychiatric disturbances, neurological symptoms, allergic responses, and cardiovascular complications.

Here are all the common side effects of Disulfiram:

Common Side Effects of Disulfiram

Common side effects of Disulfiram include:

• Headaches: Headaches occur as disulfiram impacts neurotransmitter levels and alters blood flow in the brain.
• Fatigue or drowsiness: Fatigue or drowsiness results from the medication’s effects on the central nervous system.
• Nausea or vomiting: Nausea or vomiting develops due to disulfiram disrupting normal alcohol metabolism and leading to acetaldehyde accumulation.
• Metallic or garlic-like taste in the mouth: A metallic or garlic-like taste arises from the active ingredients in disulfiram altering taste perception.
• Acne or skin rash: Acne or skin rashes occur as disulfiram triggers allergic reactions or changes in skin sensitivity.
• Decreased libido or impotence: Decreased libido or impotence arises from disulfiram’s effects on hormonal balance and sexual function.
• Flushing or sweating: Flushing or sweating results from disulfiram’s interaction with the body’s vasodilatory mechanisms.

Severe Side Effects of Disulfiram

Severe side effects of Disulfiram include:

• Liver toxicity or hepatitis: Liver toxicity or hepatitis occurs as disulfiram exerts stress on liver function, leading to inflammation or damage.
• Psychiatric effects: Psychiatric effects such as confusion, psychosis, and memory impairment arise from disulfiram’s impact on brain chemistry and neurotransmitter balance.
• Seizures or tremors: Seizures or tremors develop as disulfiram affects neurological stability and disrupts normal brain activity.
• Severe allergic reactions: Severe allergic reactions, including itching, swelling, and rash, occur as the body responds adversely to disulfiram.
• Hypotension or arrhythmias: Hypotension or arrhythmias result from disulfiram’s effects on cardiovascular function, leading to irregular heart rhythms or low blood pressure.
• Peripheral neuropathy: Peripheral neuropathy arises from disulfiram’s impact on nerve function, causing pain, tingling, or numbness in the extremities.
• Jaundice or dark urine: Jaundice or dark urine indicates liver damage, resulting from disulfiram’s interference with liver function and bile production.

What Are the Alternatives to Disulfiram?

The alternatives to Disulfiram include naltrexone, acamprosate, and nalmefene, medications that work through different mechanisms to reduce cravings, block alcohol’s pleasurable effects, and stabilize disrupted neurotransmitter systems, with injectable and oral formulations available for various treatment needs.

Here are the common alternatives to Disulfiram:

Naltrexone

Naltrexone is an opioid receptor antagonist marketed under brand names ReVia (oral) and Vivitrol (injectable). It reduces alcohol cravings and blocks the pleasurable effects of alcohol by inhibiting endogenous opioid signaling.

Acamprosate

Acamprosate (brand name Campral) stabilizes glutamate and GABA neurotransmitter systems disrupted by chronic alcohol use, helping maintain abstinence. The brain’s chemical balance is restored by Acamprosate, reducing cravings and supporting long-term alcohol addiction recovery.

Nalmefene

Nalmefene (brand name Selincro ) is a μ-opioid receptor antagonist approved in Europe for AUD. It reduces alcohol consumption by dampening reward pathways, particularly in patients with high-risk drinking patterns.

How Effective Is Disulfiram In Treating Alcohol Addiction?

Disulfiram is effective in treating alcohol addiction.

According to Skinner, M. D.’s 2014 study, ‘Disulfiram Efficacy in the Treatment of Alcohol Dependence: A Meta-Analysis’, disulfiram showed a 58% higher success rate compared to controls overall, with a 70% higher success rate in open-label trials, while proving more effective than naltrexone (77% better) and acamprosate (76% better) in supporting abstinence.

What To Avoid When Taking Disulfiram?

When taking disulfiram, strictly avoid alcohol (in any form) to prevent severe reactions (e.g., nausea, hypotension) and CNS depressants (e.g., opioids, benzodiazepines). These interactions heighten toxicity or contraindications; consult a healthcare provider to review all medications.

Is Disulfiram a Controlled Substance?

No, Disulfiram is not classified as a controlled substance in the United States. While it is FDA-approved for the treatment of alcohol dependence, it is not regulated under the Controlled Substances Act (CSA). Instead, it is categorized as a prescription-only medication (℞-only).

What Are The Available Alcohol Addiction Treatments In New Jersey?

The available alcohol addiction treatment in New Jersey includes detoxification, rehabilitation, counseling, and behavioral therapies designed to support individuals throughout their recovery journey. For alcohol addiction treatment, Right Choice Recovery specifically offers Partial Care for Adults, Intensive Outpatient Program (IOP), and Outpatient Services, complemented by therapeutic approaches like Motivational Interviewing, Cognitive Behavioral Therapy, Art and Music Therapy, Mindfulness and Meditation, and their unique Pet Therapy with Rudy, the dog.

Does Insurance Cover Alcohol Addiction Treatment In New Jersey?

Yes, insurance plans cover alcohol addiction treatment in New Jersey. Your specific coverage is determined by your insurance plan, policy details, and the type of treatment you need.

At Right Choice Recovery in New Jersey, we offer insurance verification services to determine your coverage for alcohol addiction treatment. Submit your insurance information through our online verification form, and our team will verify your benefits. We work with many major insurance providers to make treatment accessible for you.

To check your specific coverage, fill out our insurance verification form on our website or call us directly at (732) 838-6495 for immediate assistance. Our admissions team will explain what portions of treatment are covered by your insurance and any out-of-pocket costs you will expect.