Amitriptyline and alcohol do not produce a toxic reaction. They compound each other. Amitriptyline is a sedative drug, alcohol is a sedative drug, and the licensed label states that amitriptyline may enhance the sedative effects of alcohol. The NHS is noticeably more relaxed about this than the product information is, and that gap is worth understanding before you decide anything.
If you are in crisis, call your local emergency number. In the UK that is 999, or NHS 111 for urgent advice, and the Samaritans can be reached free on 116 123 at any hour.
The NHS and the label disagree in tone
Read them side by side and the difference is obvious.
The NHS page on amitriptyline for depression says: “You can drink alcohol while taking amitriptyline, but it may make you feel sleepy. It might be best to stop drinking alcohol until you see how the medicine makes you feel.”
The UK Summary of Product Characteristics puts it as a precaution rather than a permission: “Amitriptyline may enhance the sedative effects of alcohol, barbiturates and other CNS depressants.” Its section on driving is blunter still: amitriptyline “is a sedative drug”, patients on psychotropic medication can expect some impairment of attention and concentration, and “these adverse effects can be potentiated by the concomitant intake of alcohol”.
Both are current UK sources. Neither is wrong. The NHS is writing practical advice for a person who has to live a life, and it is conditional advice: find out how the medicine affects you first. The label is writing for prescribers and is stating a pharmacological property. Our reading is that the NHS wording is a considered judgement that a blanket prohibition would be ignored, rather than a statement that the combination is untroubling, and that is our interpretation rather than anything either source says. Whichever wording you read, drinking alcohol while taking amitriptyline is not recommended.
Compare it with mirtazapine, where the NHS says it is best not to drink at all. Same publisher, same year, different verdict on two sedating antidepressants.
Which amitriptyline are you taking?
This matters more than most pages admit, and the NHS maintains two separate resources for a reason.
Amitriptyline is licensed as an antidepressant, but in UK practice it is also widely prescribed at low doses for nerve pain, migraine prevention or sleep. The NHS page for amitriptyline for pain and migraine gives near-identical alcohol advice, with one addition worth noticing: “Apart from avoiding drinking too much alcohol, you can eat and drink normally while taking amitriptyline.” Drinking while taking amitriptyline is still not recommended, whatever it was prescribed for.
We are not going to tell you that a smaller dose means a smaller problem, because we found no source that establishes a threshold, and inventing one would be exactly the wrong move on a page like this. What we can say is that the reason you were prescribed it changes what a bad night costs you, and that your pharmacist can see your actual prescription while we cannot.
The interaction is not purely additive
Here is the detail that separates amitriptyline from a straightforward “two sedatives, more sedation” story.
Buried in the interactions section of the label is this line: “In the presence of ethanol amitriptyline free plasma concentrations and nortriptyline concentrations were increased.” Nortriptyline is amitriptyline’s active metabolite, so the label is describing a situation where alcohol appears to raise the amount of active drug circulating freely, not merely to sit alongside it.
The label offers no mechanism, no magnitude and no citation for that sentence, and we could not obtain the underlying data, so we are reporting it as it stands rather than building an argument on it. It is a reason to treat the combination as more than simple arithmetic, and a reason to ask a pharmacist rather than a search engine.
What the volunteer studies found, including the odd result
Two small human studies are the closest thing to direct evidence, and one of them contains a finding that appears to cut the other way.
Strömberg and Mattila, 1985, tested amitriptyline, another antidepressant and placebo, alone and with alcohol, in eleven volunteers using body sway, choice reaction, flicker fusion, tracking and recall. A single dose of amitriptyline impaired performance in several respects, and amitriptyline increased both the objective and the subjective effects of alcohol. The comparison drug did not.
Warrington, Ankier and Turner, 1986, ran a double-blind crossover study in six volunteers, giving amitriptyline, trazodone or placebo with or without alcohol. Amitriptyline caused what they described as profound depressant effects on flicker fusion threshold, choice reaction time, manual dexterity and self-rated drowsiness. Then the awkward part: adding alcohol “caused little additional effect except in the case of manual dexterity, which was further impaired”.
That reads at first like reassurance, and the authors did not treat it as one. Their own explanation is that the antidepressant’s effects alone were already so pronounced that there was limited room for alcohol to add much, and they closed by saying the result “does not suggest that it is safe for patients receiving antidepressant medication to take ethanolic drinks”.
Both studies are small, both used single doses in healthy volunteers, and neither tells you what happens on the fourth month of treatment. We are including the inconvenient half because a page that reports only the first study is not reporting the evidence.
Driving, and why “I feel fine” is not the test
The on-the-road research is where the numbers get uncomfortable.
Ramaekers, in 2003, reviewed standardised hour-long driving tests in real traffic and found that acute doses of sedating antidepressants, amitriptyline among them, produced weaving comparable to drivers at a blood alcohol concentration of 0.8 mg/mL or more. Driving performance returned to placebo levels after a week of treatment for most of the drugs tested.
Van der Sluiszen and colleagues, in 2021, tested long-term users, including thirteen people on amitriptyline, against healthy controls. Across all long-term users the increase in weaving was not significant. Those treated for less than three years did show a significant and clinically relevant increase, benchmarked against a blood alcohol concentration of 0.5 mg/mL.
The most important line in the older review is the one about self-assessment: conventional psychomotor tests and people’s own ratings of their side effects did not strongly predict how badly they actually drove. Feeling fine is not evidence that you are fine. Adding alcohol to that is adding an impairment you can measure to one you cannot.
It is an offence to drive if your ability to drive safely is affected, and the NHS is clear that the responsibility for that judgement is yours.
Overdose is where this combination gets dangerous
This section exists because tricyclic antidepressants behave differently from newer ones when too much is taken.
The label’s overdose section describes anticholinergic and cardiac effects: convulsions, respiratory depression, arrhythmias including torsade de pointes and ventricular fibrillation, QRS widening, heart block, hypotension and cardiogenic shock. It names a quantity above which severe toxicity may result, which we are not reproducing here, and then states that the effects in overdose “will be potentiated by simultaneous ingestion of alcohol”.
The practical consequence is that alcohol impairs judgement about how many tablets have been taken and when, and impulsive self-harm is more likely when drinking.
If you have taken more than your prescribed amount, contact emergency services now rather than waiting to see how you feel. In the UK, call 999 or NHS 111. Take the packet with you.
If you are thinking about stopping so you can drink
Some people arrive at this page hoping to be told that skipping a few days is fine. It is not our call, and it is not a website’s call.
Antidepressants should not usually be stopped suddenly. The Royal College of Psychiatrists states that stopping abruptly can cause withdrawal symptoms and increase the chance of becoming unwell again, that everyone should taper, and that how long that takes varies from a couple of steps to several months depending on the person.
We are not publishing a schedule or a timescale, because the right one depends on how long you have been taking it, why, at what dose and what has happened before. Whether and how to stop amitriptyline is a decision for the person who prescribed it. Missing doses to make a weekend possible gets you withdrawal effects and a drinking session on an unsettled nervous system, which is the worst available combination of the two options.
When the drinking is the thing that needs treating
For most people, being cautious with alcohol on a sedating medicine is a manageable inconvenience.
For some, this page is where it becomes clear that stopping for a fortnight is not actually available to them, and that is worth more attention than the pharmacology. The early signs of alcohol dependence and what a functioning drinker looks like are honest places to start. If you drink heavily every day, do not stop abruptly on your own, because unmanaged alcohol withdrawal can be dangerous. Our reading is that having a sedating prescription in the picture as well is a reason to have that conversation with a clinician sooner rather than later, and that is our reasoning rather than a sourced claim. Speak to a clinician first.
The Orchid Recovery is a residential addiction and mental health treatment centre in Hang Dong District, Chiang Mai, Thailand, for international English speaking adults. Where low mood, chronic pain and drinking are tangled together, treating one and ignoring the others rarely holds, which is what dual diagnosis means in practice. Our pages on depression treatment and alcohol addiction treatment explain what we do, our clinical team is listed here, and you can talk to us. We do not change anyone’s prescription remotely. Most people reading this need their own prescriber, not us.
We have also written about pregabalin and alcohol, which is often prescribed for the same kind of nerve pain and carries a considerably more serious interaction.
Sources
- NHS, Common questions about amitriptyline for depression
- NHS, Common questions about amitriptyline for pain and migraine
- electronic Medicines Compendium, Amitriptyline Hydrochloride 50 mg Film-Coated Tablets, Summary of Product Characteristics
- Royal College of Psychiatrists, Stopping antidepressants
- Royal College of Psychiatrists, Alcohol, mental health and the brain
- Strömberg C and Mattila MJ, Acute and subacute effects on psychomotor performance of femoxetine alone and with alcohol, European Journal of Clinical Pharmacology 1985
- Warrington SJ, Ankier SI and Turner P, Evaluation of possible interactions between ethanol and trazodone or amitriptyline, Neuropsychobiology 1986
- Ramaekers JG, Antidepressants and driver impairment: empirical evidence from a standard on-the-road test, Journal of Clinical Psychiatry 2003
- van der Sluiszen NNJJM et al, Driving performance and neurocognitive skills of long-term users of sedating antidepressants, Human Psychopharmacology 2021
- Samaritans, Contact a Samaritan
One more thing before you go
Most people close this page reassured, and that is the correct ending to it.
The exception is the reader who noticed that going a week without a drink was the hardest part of being ill, and who has noticed something like it before. We run a 20-client residential programme in Chiang Mai, and our page on medically supervised alcohol detox explains the medical side of the first days. Write to admissions@orchidrecoverythailand.com, or call or message +66 985 245 093, which also takes WhatsApp.
Frequently Asked Questions
Can you drink alcohol while taking amitriptyline?
The NHS says you can, but that it may make you feel sleepy, and that it might be best to stop drinking until you see how the medicine affects you. The licensed product information is more cautious, stating that amitriptyline may enhance the sedative effects of alcohol and that its impairing effects on attention and concentration can be potentiated by alcohol. Drinking while taking amitriptyline is not recommended. Ask your pharmacist about your own prescription.
What happens if you mix amitriptyline and alcohol?
Mainly sedation, coordination problems and impaired judgement, greater than either would produce alone. There is no flushing or vomiting reaction of the kind described for metronidazole. One line in the product information also reports that free amitriptyline and nortriptyline concentrations were increased in the presence of ethanol, which suggests the effect may not be purely additive.
Is it safe to have one glass of wine on amitriptyline?
No source we found sets a safe threshold, and no source describes a specific dangerous amount. The NHS wording is conditional rather than permissive: find out how the medicine affects you first. Risk rises sharply where sedation matters, such as driving, being alone, taking other sedating medicines, or a night that ends heavier than intended.
Does the answer change if I take amitriptyline for pain rather than depression?
The NHS gives near-identical alcohol advice on both of its amitriptyline pages, with the pain page adding that apart from avoiding drinking too much alcohol you can eat and drink normally. Drinking while taking amitriptyline is still not recommended. We found no source establishing that a lower dose changes the interaction, so we are not going to claim one. Check with your pharmacist, who can see the actual prescription.
Can I drive after drinking on amitriptyline?
Assume not. Amitriptyline is described in its own label as a sedative drug whose effects on attention can be potentiated by alcohol. On-the-road research has found that acute doses of sedating antidepressants produced weaving comparable to a blood alcohol concentration of 0.8 mg/mL, and that people´s self-ratings did not predict how badly they actually drove. The legal responsibility for that judgement is yours.
Can I stop amitriptyline for a night out?
Talk to your prescriber, not a website. The Royal College of Psychiatrists says antidepressants should not usually be stopped suddenly, because this can cause withdrawal symptoms and increase the chance of becoming unwell again, and that everyone should taper. Whether and how to stop is a decision for the person who prescribed it.
Why is amitriptyline dangerous in overdose?
Tricyclic antidepressants affect heart rhythm and conduction. The product information describes arrhythmias, QRS widening, heart block, convulsions, respiratory depression and cardiogenic shock in overdose, and states that these effects will be potentiated by simultaneous ingestion of alcohol. If more than the prescribed amount has been taken, contact emergency services immediately rather than waiting.
I cannot go two weeks without drinking. Does that mean I have a problem?
It is a recognised clinical signal rather than a character question, and it is worth raising with your prescriber. If you drink heavily and daily, do not stop suddenly on your own, because alcohol withdrawal can be dangerous without support. Speak to a clinician, and tell them what else you are prescribed.
