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Disulfiram

Disulfiram, commonly known as Antabuse, has been the subject of various clinical trials exploring its potential beyond its traditional use in alcohol addiction treatment. These studies investigate its efficacy in treating cocaine dependence, HIV infection, breast cancer, and even its potential neuroprotective effects in Alzheimer’s disease. This article summarizes key findings from recent clinical trials using disulfiram in different medical conditions.

Table of Contents

What is Disulfiram?

Disulfiram, also known by its brand names Antabuse or Antabus, is a medication that has been used for over 60 years to treat chronic alcoholism[1]. It is an FDA-approved drug that helps support the treatment of alcohol dependency by causing unpleasant reactions when alcohol is consumed while taking the medication[2].

Conditions Treated with Disulfiram

Disulfiram is primarily used to treat the following conditions:

  • Alcohol Use Disorder (AUD): Disulfiram is an established, effective medication for treating alcohol addiction[2].
  • Cocaine Dependence: Some studies have shown that disulfiram may be effective in reducing cocaine use in individuals who are also dependent on opioids[3].
  • Methamphetamine Dependence: Research is being conducted to examine the safety and potential effectiveness of disulfiram in treating methamphetamine addiction[4].

How Disulfiram Works

Disulfiram works in several ways:

  1. Alcohol Deterrent: When a person drinks alcohol while taking disulfiram, it causes a highly unpleasant physical reaction. This reaction acts as a deterrent to drinking alcohol[2].
  2. Enzyme Inhibition: Disulfiram inhibits an enzyme called aldehyde dehydrogenase (ALDH). This enzyme is responsible for breaking down acetaldehyde, a toxic byproduct of alcohol metabolism. When ALDH is inhibited, acetaldehyde builds up in the body, causing unpleasant symptoms[1].
  3. Potential Anti-Cancer Properties: Recent research suggests that disulfiram, especially when combined with copper, may have anti-cancer properties. It has shown promise in laboratory studies against certain types of cancer cells, including glioblastoma (a type of brain cancer) and breast cancer[1][5].

Dosage and Administration

The dosage and administration of disulfiram can vary depending on the condition being treated and the individual patient. Here are some general guidelines:

  • For Alcohol Use Disorder: A typical dose is 250 mg daily, taken orally[2].
  • For Cocaine Dependence: Studies have used doses ranging from 62.5 mg to 250 mg daily[3].
  • For Cancer Treatment (Experimental): In clinical trials for breast cancer, a dose of 400 mg daily has been used, along with copper supplementation[5].

It’s important to note that disulfiram should only be taken under the supervision of a healthcare professional. The medication is usually started after a period of alcohol abstinence and is often combined with other forms of treatment, such as counseling or behavioral therapy[2].

Side Effects and Safety

Disulfiram can cause side effects, and it’s important to be aware of them. Common side effects may include:

  • Drowsiness
  • Headache
  • Skin rash
  • Metallic or garlic-like taste in the mouth
  • Fatigue

The most serious risk associated with disulfiram is the reaction that occurs if alcohol is consumed while taking the medication. This reaction can include flushing, nausea, vomiting, severe headache, and in rare cases, more serious complications[2].

It’s crucial to avoid all sources of alcohol while taking disulfiram, including some medications, food products, and personal care items that may contain alcohol[6].

Ongoing Research and Potential New Uses

Researchers are exploring several new potential uses for disulfiram:

  • Cancer Treatment: Studies are investigating the use of disulfiram, often in combination with copper, for treating various types of cancer, including glioblastoma, breast cancer, and testicular germ cell tumors[1][5][7].
  • HIV Treatment: Some research is looking at whether disulfiram could help activate latent HIV in patients on antiretroviral therapy, potentially as part of a strategy to eliminate the virus[8].
  • Alzheimer’s Disease: Early research suggests that disulfiram might increase the expression of a protein called ADAM10, which could potentially have neuroprotective effects in Alzheimer’s disease[6].

It’s important to note that these are areas of ongoing research, and disulfiram is not currently approved for these uses. Patients should not use disulfiram for these conditions outside of clinical trials supervised by medical professionals.

Condition Study Design Dosage Key Findings/Objectives
Cocaine and Opioid Dependence 18-week randomized, double-blind trial 0 mg, 62.5 mg, 125 mg, or 250 mg/day Assess retention and reduction in drug use
HIV Infection Dose escalation study 500 mg, 1000 mg, or 2000 mg for 3 days Evaluate safety and effect on HIV transcription
Metastatic Breast Cancer Phase II open-labeled trial 400 mg daily with copper supplement Assess clinical response and survival rates
Refractory Germ Cell Tumors Phase II non-randomized, open-label trial 400 mg daily with cisplatin Evaluate overall response rate and survival
Methamphetamine Dependence 8-week open-label pilot study 250 mg/day Examine safety, tolerability, and drug use
Alcohol Addiction (Alzheimer’s focus) Observational study Not specified Analyze expression of dementia-relevant genes

FAQ

  • What is disulfiram and how does it work? Disulfiram, also known as Antabuse, is a medication primarily used to treat alcohol dependence. It works by inhibiting an enzyme called aldehyde dehydrogenase, which is involved in alcohol metabolism. This causes unpleasant effects when alcohol is consumed, deterring drinking behavior.
  • In which conditions is disulfiram being studied besides alcohol addiction? Recent clinical trials have explored disulfiram's potential in treating cocaine dependence, HIV infection, metastatic breast cancer, and germ cell tumors. It's also being investigated for its possible neuroprotective effects in Alzheimer's disease.
  • How is disulfiram being used in cancer treatment? In cancer trials, disulfiram is being studied in combination with other drugs, such as copper supplements for metastatic breast cancer and cisplatin for refractory germ cell tumors. The goal is to exploit disulfiram's ability to inhibit certain enzymes that may contribute to cancer cell survival and drug resistance.
  • What are the potential side effects of disulfiram? Common side effects of disulfiram may include drowsiness, headache, skin rash, and metallic or garlic-like taste in the mouth. More severe reactions can occur if alcohol is consumed while taking disulfiram, including flushing, nausea, vomiting, and rapid heartbeat.
  • How is disulfiram being studied in HIV treatment? In HIV research, disulfiram is being investigated for its potential to activate latent HIV in cells, which could help eliminate hidden reservoirs of the virus in patients on antiretroviral therapy. This approach is part of efforts to find strategies for HIV eradication.

Ongoing Clinical Trials on Disulfiram

  • Study of Disulfiram and Copper for Patients with Metastatic Breast Cancer

    Not recruiting

    2 1 1 1
    Investigated diseases:
    Investigated drugs:
    Czechia

Glossary

  • ALDH: Aldehyde dehydrogenase, an enzyme involved in alcohol metabolism that is inhibited by disulfiram.
  • Antiretroviral therapy (ART): A combination of medications used to treat HIV infection by suppressing the virus and slowing the progression of the disease.
  • Cisplatin: A chemotherapy drug used to treat various types of cancers, often combined with other medications in clinical trials.
  • Contingency management: A type of behavioral therapy that uses positive reinforcement to encourage desired behaviors, such as abstinence from drug use.
  • Germ cell tumors (GCTs): A type of cancer that begins in the cells that produce eggs or sperm.
  • HIV latency: A state in which HIV persists in a small number of infected cells without actively replicating, making it difficult to eliminate the virus completely.
  • Metastatic breast cancer: Breast cancer that has spread beyond the breast to other parts of the body.
  • Pharmacokinetics: The study of how a drug is absorbed, distributed, metabolized, and eliminated by the body.
  • RECIST 1.1: Response Evaluation Criteria in Solid Tumors, a set of rules used to assess cancer patients' response to treatment in clinical trials.
  • Urine toxicology: A test that analyzes urine samples to detect the presence of drugs or their metabolites.

References

  1. https://clinicaltrials.gov/study/NCT01777919
  2. https://clinicaltrials.gov/study/NCT02735577
  3. https://clinicaltrials.gov/study/NCT00580827
  4. https://clinicaltrials.gov/study/NCT00731133
  5. https://clinicaltrials.eu/trial/study-of-disulfiram-and-copper-for-patients-with-metastatic-breast-cancer/
  6. https://clinicaltrials.gov/study/NCT03212599
  7. https://clinicaltrials.gov/study/NCT03950830
  8. https://clinicaltrials.gov/study/NCT01944371