Antabuse
In brief
- Antabuse (disulfiram) is a prescription-only medicine in the UK, normally obtained from a pharmacy with a prescription from a licensed prescriber.
- Antabuse is used to support the treatment of alcohol dependence by creating an alcohol-aversion reaction. It works by inhibiting aldehyde dehydrogenase, leading to acetaldehyde build-up if alcohol is consumed.
- The usual adult dose is 800 mg on the first day, reduced over 5 days to a maintenance dose of 100–200 mg daily.
- The form of administration is an oral tablet; in the UK, Antabuse tablets contain 200 mg.
- It does not provide an immediate “feeling” of effect, but the aversive action begins after dosing and can cause a reaction with alcohol within minutes to a few hours if alcohol is taken.
- The duration of action is prolonged, and sensitivity to alcohol can persist for up to 2 weeks after the last dose.
- Do not consume alcohol during treatment, and avoid alcohol for at least 24 hours before starting. Alcohol taken while on Antabuse can cause flushing, palpitations, chest pain, breathlessness, low blood pressure, nausea, vomiting, dizziness, and may be severe or life-threatening.
- The most common side effects are drowsiness, fatigue, nausea, vomiting, a metallic or garlic-like aftertaste, headache, and skin rash.
- Would you like to try Antabuse without a prescription?
Legal status and availability in the UK
Disulfiram (Antabuse) is prescription only in the UK, where it is available as 200 mg tablets.
In our online pharmacy, Antabuse is available without a prescription, with discreet delivery to the United Kingdom in 9–21 days.
Basic Antabuse information
- INN (international nonproprietary name): Disulfiram
- Brand names available in the United Kingdom: Antabuse
- ATC code: N07BB01
- Forms and strengths: tablet 200 mg
- Manufacturers in the United Kingdom: Accord Healthcare, TEVA Pharmaceuticals, Mylan
- Registration status in the United Kingdom: Prescription only (Rx)
- OTC / Rx classification: Prescription only (Rx)
Clinical effectiveness in the UK NHS context
How does Antabuse fit into everyday NHS alcohol dependence care?
It is usually used when abstinence is the goal and the patient accepts a deterrent approach rather than a craving-reducing one.
That is a very specific place in treatment, and it is why disulfiram is not the first choice for everyone.
When it does fit, patients often describe improved control, fewer “just one drink” moments, and a stronger sense of accountability.
The same patients may also struggle with missed doses, especially if they are not being checked by a partner, carer, or alcohol team.
Some people simply avoid taking it on days when they think they might drink, which undermines relapse prevention.
- Benefits: strong deterrent effect, simple once-daily dosing, useful for relapse prevention when motivation is high.
- Barriers: missed doses, hidden alcohol in medicines or food, anxiety about side effects, and difficulty sticking with treatment without support.
- Outcomes: better control and more confidence when supervised dosing and counselling are in place.
Typical regimen: 800 mg on the first day, reduced over 5 days to 100–200 mg daily for maintenance, with treatment often continued for several months to 1 year or longer alongside counselling.
In UK practice, that longer-term support matters because Antabuse treatment is only as good as the follow-up around it.
A prescription without review often leads to poor adherence, while a coordinated plan with the NHS alcohol team can make a real difference.
Indications and expanded uses: what Antabuse is used for
What is the actual indication for disulfiram in the UK?
The main use is alcohol dependence where abstinence is intended and supported by structured follow-up.
It works as an alcohol deterrent tablet, not as a craving suppressant.
That is an important distinction when comparing Antabuse for alcoholism with medicines such as naltrexone or acamprosate.
- Approved use
- Alcohol dependence when the patient aims for abstinence and has support from a clinician or addiction service.
- Off-label use
- Less common situations where alcohol aversion therapy is considered, but this is not the standard NHS approach.
In the UK, the brand name is Antabuse.
The substance itself may also appear under the synonym tetraethylthiuram disulfide.
The clinical use stays the same: a supervised deterrent for patients who want to remain alcohol-free.
Composition, brand names and UK product landscape
What exactly is in the tablet?
The active ingredient is disulfiram, which is the INN used internationally.
In the UK, the brand name is Antabuse, supplied as 200 mg tablets.
| Item | Usual UK detail | Practical note |
|---|---|---|
| INN | Disulfiram | Used on clinical and regulatory listings |
| Brand name | Antabuse | UK brand |
| Strengths | 200 mg | Oral scored tablets |
Manufacturers include Accord Healthcare, TEVA Pharmaceuticals and Mylan.
Contraindications, high-risk groups and daily-life restrictions
Who should not take Antabuse, and what makes it risky in day-to-day life?
The biggest issue is that disulfiram can trigger a reaction if alcohol is consumed, and that makes hidden alcohol just as important as obvious drinking.
Recent alcohol intake within 24 hours is an absolute contraindication, as are severe myocardial or coronary disease, psychosis or severe mental impairment, hypersensitivity, pregnancy and breastfeeding, and severe hepatic insufficiency.
People with mild to moderate liver or kidney disease, diabetes, epilepsy, or cerebrovascular disease may still be considered, but only with monitoring.
- Read labels for hidden alcohol in mouthwash, medicated syrups, tinctures, and some desserts.
- Avoid alcohol-based aftershaves, perfumes, and skincare products if they are likely to be absorbed or inhaled heavily.
- Check with a pharmacist before using any new cold, flu, or cough product.
- Driving advice should be individualised if dizziness, low blood pressure, or sleepiness occurs.
| Absolute contraindications | Relative contraindications |
|---|---|
| Recent alcohol intake, severe coronary disease, psychosis, hypersensitivity, pregnancy, breastfeeding, severe hepatic insufficiency | Mild to moderate liver or kidney disease, diabetes, epilepsy, cerebrovascular disease |
This is why pharmacist counselling matters so much.
For UK patients, everyday safety is often about avoiding hidden alcohol rather than just avoiding pubs and wine.
Dosage guidelines and missed doses
What dose is usually used, and what should happen if a tablet is missed?
The standard adult regimen starts with 800 mg on the first day, then the dose is reduced over 5 days to a maintenance dose of 100–200 mg daily.
Children are not recommended because safety and efficacy data are lacking.
Older adults should start at the lower end, and liver and renal function should be monitored.
Monitoring is also sensible in anyone with liver or kidney impairment, with transaminases checked regularly.
| Age group | Usual dose | Monitoring |
|---|---|---|
| Adults | 800 mg on day 1, reduced over 5 days to 100–200 mg daily | Liver function and clinical follow-up |
| Older adults | Start low, adjust cautiously | Liver and renal function |
| Children | Not recommended | Not applicable |
Missed dose: take it when remembered unless it is nearly time for the next dose, and do not double up.
Overdose: seek medical help urgently if there is severe nausea, vomiting, low blood pressure, or seizures.
Interactions overview: alcohol, medicines and everyday products
What happens if alcohol is taken while on disulfiram?
The alcohol–disulfiram reaction can cause flushing, palpitations, chest pain, breathlessness, dizziness, low blood pressure, nausea, and vomiting.
It can be severe or life-threatening, especially if a large amount of alcohol is consumed.
Most people know to avoid drinks, but many do not realise that the reaction can still happen up to 2 weeks after the last dose.
That is a very important point for patients stopping treatment or planning a social event.
| Interaction type | Examples | Patient action |
|---|---|---|
| Alcohol-containing products | Beer, wine, spirits, mouthwash, syrups, tinctures, desserts | Avoid and check labels carefully |
| Medicines | Warfarin, some antibiotics, sedatives | Speak to a pharmacist or prescriber before use |
| Everyday items | Cosmetics or products with alcohol content | Review ingredients if reactions seem likely |
If a reaction seems unusual, report it through the MHRA Yellow Card scheme and get it reviewed.
Tea and coffee are not the main issue.
Alcohol-containing medicines and hidden alcohol are the real problem with disulfiram interactions.
Comparable medicines and UK prescribing preferences
Why might a clinician choose naltrexone, acamprosate, or topiramate instead of disulfiram?
The answer usually comes down to fit.
Antabuse suits people who want abstinence and like a clear deterrent.
Naltrexone and acamprosate are the main alternatives in alcohol dependence care because they are often better suited when craving reduction or broader tolerability is the priority.
Topiramate is sometimes used off-label, but it is not a first-line UK option.
| Medicine | Mechanism | Likely fit | Common limitations |
|---|---|---|---|
| Disulfiram | Alcohol deterrent | Abstinence-focused patients | Needs commitment and alcohol avoidance |
| Naltrexone | Opioid antagonist | Craving reduction | Not ideal for every patient |
| Acamprosate | Modulates glutamatergic neurotransmission | Support for abstinence maintenance | Can be less convenient for some patients |
| Topiramate | Anticonvulsant | Selected off-label cases | Off-label use and tolerability issues |
For a patient choosing between these medicines, the practical question is usually whether they want aversion or craving control.
Frequently asked questions about Antabuse
How long after stopping Antabuse can I drink? The risk of reaction can last up to 2 weeks after the last dose.
Do I need a prescription for Antabuse in the UK? Yes, it is prescription only, so use a regulated UK provider and make sure the medicine is appropriate for you.
What if I accidentally drink alcohol while taking it? Stop drinking, seek medical advice urgently if symptoms start, and get help immediately if there is chest pain, breathlessness, or fainting.
Is it available on the NHS? Yes, it may be prescribed in alcohol dependence care when the clinician feels it is suitable.
Guidance for proper use and pharmacist counselling
What helps patients take disulfiram safely and stick with it?
Clear, non-judgemental counselling makes a huge difference.
Patients need to know how to take the medicine, what to avoid, when to get help, and why supervised dosing may improve adherence.
NHS alcohol support, local addiction services, and online patient portals can all help keep the plan on track.
Routine liver monitoring is part of safe use, especially in people with existing liver concerns.
- Take the tablet exactly as prescribed, usually once daily.
- Keep alcohol out of the picture completely, including hidden alcohol in medicines and products.
- Use supervised dosing if staying on track is difficult.
- Attend follow-up appointments and blood tests.
- Store tablets in the original packaging at room temperature, protected from light and moisture.
| Do | Don't | Get help now |
|---|---|---|
| Take as prescribed, keep to counselling, and check labels | Double doses, drink alcohol, or ignore hidden alcohol | Chest pain, breathlessness, severe vomiting, fainting, or seizures |
Used well, Antabuse counselling is straightforward: make the rules clear, keep follow-up regular, and make sure the patient knows exactly who to contact if anything changes.
Delivery across the United Kingdom
| City | Region | Delivery time |
|---|---|---|
| London | England | 9–21 days |
| Birmingham | England | 9–21 days |
| Manchester | England | 9–21 days |
| Liverpool | England | 9–21 days |
| Leeds | England | 9–21 days |
| Sheffield | England | 9–21 days |
| Bristol | England | 9–21 days |
| Newcastle upon Tyne | England | 9–21 days |
| Edinburgh | Scotland | 9–21 days |
| Glasgow | Scotland | 9–21 days |
| Cardiff | Wales | 9–21 days |
| Belfast | Northern Ireland | 9–21 days |
| Aberdeen | Scotland | 9–21 days |
| Coventry | England | 9–21 days |
Final takeaway on Antabuse
Antabuse is not a miracle cure, but it can be a very useful part of alcohol dependence treatment when abstinence is the clear goal.
Its success depends on motivation, counselling, supervised dosing where needed, and proper attention to alcohol-free products and medicines.
For the right patient, disulfiram can provide a strong deterrent and a useful relapse-prevention tool.
For the wrong patient, or without support, it is much more likely to fail.
