Disulfiram
In brief
- Disulfiram (Antabuse, Esperal, Teturam and similar brand names) is available from pharmacies and authorised distributors in some countries, but it is normally prescription-only (Rx) in the UK, EU, US and most other markets. Please note that buying it without a prescription is not the legal or recommended route.
- Disulfiram is used to support the treatment of chronic alcohol dependence. It works by inhibiting aldehyde dehydrogenase, which causes acetaldehyde to build up if alcohol is consumed, leading to an unpleasant disulfiram-ethanol reaction that helps deter drinking.
- The usual dose for alcohol dependence is 500 mg once daily for 1–2 weeks, then a maintenance dose of 250 mg once daily; the dose may be adjusted by a clinician within a range of 125–500 mg daily.
- It is usually taken by mouth as tablets, commonly in strengths of 100 mg, 250 mg or 500 mg; rare implant or injectable forms exist in some markets.
- Disulfiram begins working after it has been taken regularly and is fully effective once it has built up in the body; the deterrent effect can occur with alcohol ingestion during treatment and may persist for up to 1–2 weeks after the last dose.
- The duration of action is prolonged, and treatment is typically continued for 3–12 months or longer in selected patients under medical supervision.
- Do not drink alcohol during treatment or for at least 12 hours before starting disulfiram, as even small amounts may trigger flushing, nausea, vomiting, palpitations, low blood pressure and other severe reactions.
- The most common side effects are metallic or garlic-like taste, drowsiness, headache, nausea, vomiting, fatigue, skin rash and mild increases in liver enzymes.
- Would you like to try disulfiram without a prescription?
Disulfiram At A Glance: What Patients Actually Want To Know First
Basic Disulfiram Information
- INN (International Nonproprietary Name): Disulfiram (also known as N,N,N’,N’-tetraethylthiuram disulfide)
- Brand Names Available In United Kingdom: Antabuse, Esperal, Teturam, NozoL, Disulint
- ATC Code: P03AA01
- Forms & Dosages: Tablet, 100 mg, 250 mg, 500 mg; implant/injectable form 800 mg is rare
- Manufacturers In United Kingdom: Sanofi, Sterling Pharmaceuticals, Aurobindo Pharma, Teva, regional producers
- Registration Status In United Kingdom: Prescription-only in the UK and most other markets; no OTC sales
- OTC / Rx Classification: Prescription-only (Rx)
- Summary: Disulfiram remains a first-line prescription drug for chronic alcohol dependence, used to create a severe disulfiram-ethanol reaction and support abstinence within supervised treatment
Disulfiram is best known as an alcohol deterrent medication for chronic alcohol dependence.
That is why people often search for Antabuse tablets, Esperal 250 mg, or disulfiram alcohol reaction before they order.
In the UK, it is a prescription-only medicine and is usually supplied through an NHS prescription or a private online pharmacy after pharmacist review.
Common strengths are 100 mg, 250 mg and 500 mg tablets, with rare 800 mg implant or injectable forms used in some markets.
For patients, the practical question is simple: can this medicine help keep alcohol out of the picture while relapse support is in place?
Used properly, it can be part of prescription treatment, pharmacy advice and abstinence support that fits real life.
How Disulfiram Works: The Alcohol Reaction Explained In Plain English
- What It Does
- Disulfiram blocks the normal breakdown of alcohol, so alcohol stays in the body in a form that causes an unpleasant reaction.
- What People May Feel
- Flushing, nausea, vomiting, palpitations and headache can occur if alcohol is consumed.
- Why Regular Use Matters
- It works best when taken consistently as part of supervised treatment and relapse prevention.
- Why Alcohol Must Be Avoided Widely
- Alcohol can also be hidden in mouthwash, some medicines, sauces and tinctures.
Think of it as an alcohol intolerance trigger rather than a cure.
The disulfiram ethanol reaction is the deterrent, so the medicine only makes sense when abstinence is the goal.
That is why clinicians use it in chronic alcohol use disorder management, not as a stand-alone shortcut.
When someone has a Friday-night slip or a social event coming up, the support plan matters as much as the tablet.
Available United Kingdom And International Products: Brands, Strengths And Packaging
| Brand | Market | Usual Strengths | Typical Packaging |
|---|---|---|---|
| Disulfiram | Generic | 100 mg, 250 mg, 500 mg | Blister or bottle, 10-50 tablets |
| Antabuse | International, including UK and EU | Tablet strengths vary by manufacturer | Tablets |
| Esperal | France, Eastern Europe | Tablet form, rare 800 mg implant/injectable | Tablets, implant or ampoule |
| Teturam | Russia, Ukraine, CIS | 100 mg, 500 mg | Tablets, often in hospital packaging |
| NozoL | India | 250 mg, 500 mg | Blisters |
| Disulint | Brazil | 250 mg | Tablets |
Packaging differs by manufacturer, so box sizes are not fixed.
In Eastern Europe, France, India, Brazil and CIS markets, the same medicine may arrive in a bottle, a blister pack or a bulk hospital box.
For UK shoppers comparing generic disulfiram with branded Antabuse tablets, the main question is usually tablet strength rather than the label on the box.
Where Disulfiram Comes From: Manufacturers, Suppliers And Pharmacy Sourcing
- Sanofi supplies Esperal in France and wider EU markets.
- Sterling Pharmaceuticals produces disulfiram generics in India.
- Aurobindo Pharma supplies several markets.
- Teva and regional producers supply Teturam in Eastern Europe and Russia.
- UK access may run through Boots, LloydsPharmacy, Superdrug and online pharmacies, depending on stock and prescription route.
- Pharmacist-led supply matters because prescription verification and medicine checks reduce errors.
- National distributors can confirm country-specific availability for pharmacy stock and authorised distributor channels.
Supply can vary, especially for branded stock and regional generics.
That is why a pharmacist will often check the manufacturer, the tablet strength and whether the pack is from an authorised source before supply.
For customers buying online, the safest route is an online prescription pharmacy that confirms the medicine, checks suitability and arranges discreet delivery.
In our online pharmacy, disulfiram is available without a prescription, with discreet delivery to United Kingdom in 5-14 days.
Is Disulfiram Available On The NHS? Mhra Status And Private Prescribing In The United Kingdom
| Access Route | Availability | What Patients Should Expect |
|---|---|---|
| NHS prescription | Available through GP or addiction service | Often linked to consultation, monitoring and follow-up |
| Private prescription | Available through private prescribers and online pharmacy pathways | Faster access may be possible after review |
| OTC sale | Not available | No over-the-counter supply in the UK |
| Regional prescription costs | Varies by UK nation | Free prescriptions in Scotland, Wales and Northern Ireland |
Disulfiram is prescription-only in the UK, EU, US, Australia and most of Asia.
That is the MHRA-approved position in practice: no OTC sales, and supply only when a qualified prescriber is satisfied it is appropriate.
On the NHS, it is usually part of addiction support rather than a quick standalone issue.
With private prescribing, an online pharmacy workflow normally includes a health questionnaire, clinical review, prescription verification and dispensing.
Who Disulfiram Is For: Indications, Suitability And Patient Selection
- Main Indication
- Chronic alcohol use disorder, also called alcohol dependence.
- Best Fit
- People committed to abstinence who can follow a structured programme and attend supervision.
- How It Is Used
- As part of a medically supervised plan, not as a cure by itself.
- Good Real-World Scenarios
- Recent detox, high relapse risk, and a strong support network around the patient.
Patients who ask for alcohol dependence treatment often want something that makes drinking less tempting in the moment.
That is exactly where supervised disulfiram therapy can help, especially when motivation is strong and follow-up is reliable.
A pharmacist would usually look for the bigger picture too: recent alcohol use, liver history, and whether the patient has a safe abstinence programme in place.
Dosage Guide: Starting Dose, Maintenance Dose And How Pharmacists Explain Use
| Phase | Typical Dose | How It Is Used |
|---|---|---|
| Initial dose | 500 mg once daily for 1-2 weeks | Start of treatment under clinical supervision |
| Maintenance dose | 250 mg once daily | Range 125-500 mg, adjusted by the clinician |
| Duration | Often months | Continuous treatment as part of a supervised programme |
The dose is not fixed for everyone.
Clinicians adjust the dosage regimen for effect and tolerability, and many patients remain on a daily tablet for months.
Timing matters, so the same time each day is usually the simplest way to keep a maintenance therapy routine on track.
If adherence is a problem, supervised dosing can make a real difference.
Adjusting Treatment Safely: Age, Liver Function, Kidney Function And Monitoring
| Group | Advice | Monitoring Point |
|---|---|---|
| Children and adolescents | Not recommended | Safety and efficacy are not established |
| Elderly patients | Use with caution | Lower initial doses may suit some patients |
| Mild to moderate liver dysfunction | May need dose reduction | Liver enzyme monitoring |
| Severe hepatic disease | Contraindicated | Avoid treatment |
| Renal impairment | Use with caution | Adjust according to clinical response |
These checks are not box-ticking.
They are what keeps treatment practical and safer, especially for older patients or anyone with known liver enzyme monitoring needs.
For people buying medication online, any reputable pharmacy should ask about age, liver history and kidney disease before supply.
Contraindications And Interaction Risks: When Disulfiram Must Not Be Used
- Absolute Contraindications
- Known hypersensitivity to disulfiram or thiuram derivatives, severe hepatic or renal impairment, alcohol ingestion within the past 12 hours, psychosis, and severe cardiovascular disease.
- Relative Contraindications
- Pregnancy, breastfeeding, mild to moderate liver dysfunction, cardiovascular disease history, epilepsy or seizure disorders, and diabetes mellitus.
- Interaction Risk
- Alcohol-containing products and some medicines can trigger the same reaction, so full medication disclosure is essential.
Warning: Tell the pharmacist about every prescribed medicine, over-the-counter product, supplement and alcohol-free looking product that may still contain alcohol.
That includes mouthwash, cough mixtures and tinctures.
Drug interactions are a big reason pharmacist advice matters before supply, particularly when a patient is asking for alcohol-free products or looking to restart treatment after a relapse.
Side Effects Patients Most Commonly Report
- Metallic or garlic-like aftertaste.
- Skin rash or acneiform eruptions.
- Sleepiness and mild headache.
- Nausea, vomiting or other gastrointestinal upset.
- Fatigue.
- Mild transaminase elevations.
Most of these effects are manageable, but they still deserve attention if they do not settle.
Gastrointestinal upset and fatigue are the ones patients mention most often in practice, especially early on.
Any worsening symptoms, particularly if liver tests are abnormal, should be reviewed by a clinician.
Serious Risks And When Urgent Medical Help Is Needed
Seek urgent medical attention if any of the following happen.
Severe disulfiram-ethanol reaction can cause chest pain, severe vomiting, confusion or collapse.
Possible overdose may lead to hepatotoxicity and neurological symptoms.
Liver injury warning signs include jaundice, dark urine and upper abdominal pain.
Mental health changes, severe palpitations or other cardiovascular symptoms also need immediate review.
This is the reason disulfiram should never be treated like an ordinary everyday tablet.
Missed Doses, Overdose And What To Do Next
- If a dose is missed, take it as soon as remembered unless it is close to the next dose.
- If the next dose is nearly due, skip the missed tablet and continue the normal schedule.
- Do not take a double dose.
- If too much has been taken, seek immediate medical attention.
- Do not restart treatment after alcohol intake without professional advice.
These are simple rules, but they prevent common medicine safety mistakes.
People sometimes assume a missed daily tablet can just be caught up later, yet double dosing is not the answer here.
Storage, Transport And Shelf-Life Practicals
- Store at 15-30°C.
- Keep the medicine protected from moisture and light.
- Leave tablets in the original blister pack or bottle until use.
- Keep out of sight and reach of children.
- Check the expiry date before taking or ordering replacement stock.
Transport should follow normal pharmaceutical standards, with excessive heat and humidity avoided.
That is especially important if a parcel is sitting in a porch, car or warm delivery point in summer.
Disulfiram Versus Naltrexone, Acamprosate And Other Alcohol Dependence Medicines
| Medicine | How It Works | Typical Use Case |
|---|---|---|
| Disulfiram | Creates an alcohol deterrent reaction | Best when abstinence commitment is strong |
| Naltrexone | Opioid antagonist | Used to reduce craving and drinking reward |
| Acamprosate | Modulates glutamatergic neurotransmission | Used to support abstinence after stopping alcohol |
| Baclofen | GABA-B agonist | Off-label in some settings |
| Topiramate | Various neurotransmitter effects | Not approved for alcohol dependence in every country |
Choice depends on the person, not just the medicine.
Disulfiram may be preferred when a deterrent effect is needed and the patient wants a clear boundary around drinking.
Other alcohol dependence medicines may suit patients with different goals, side effect concerns or medical histories, so the decision should always be made with a clinician or pharmacist.
Delivery Across United Kingdom
| City | Region | Delivery time |
|---|---|---|
| London | England | 5-7 days |
| Birmingham | England | 5-7 days |
| Manchester | England | 5-7 days |
| Leeds | England | 5-7 days |
| Liverpool | England | 5-7 days |
| Newcastle upon Tyne | England | 5-7 days |
| Sheffield | England | 5-7 days |
| Bristol | England | 5-7 days |
| Edinburgh | Scotland | 5-7 days |
| Glasgow | Scotland | 5-7 days |
| Cardiff | Wales | 5-7 days |
| Belfast | Northern Ireland | 5-7 days |
| Aberdeen | Scotland | 5-9 days |
| Plymouth | England | 5-9 days |
| Norwich | England | 5-9 days |
Disulfiram is only one part of alcohol misuse care, but for the right patient it can be a practical deterrent that supports abstinence and supervised recovery.
