Palpitations after alcohol: why they happen, how long they last and when they are dangerous

Why alcohol makes your heart race

In this article, you will read why your heart can pound or race after a drink, how long those palpitations usually last after alcohol, what studies say about alcohol and heart rhythm disorders, and when it is time to call your GP. This matters, because a racing heart after a drink can be frightening, and the difference between a harmless fast heart rate and a heart rhythm disorder leads to a different choice: wait and see, or call. BioProfile’s heart scan shows where your heart and blood vessels stand today. This is not a diagnosis. It is insight, to see where you stand today and to help you make better choices in your diet and lifestyle.

The largest measurement in everyday life comes from the Oktoberfest in Munich. In 2015, 3,028 visitors with an average age of about 35 had a 30-second ECG taken with a smartphone. In 30.5 per cent the ECG showed a rhythm disturbance, and the most common finding, in 25.9 per cent, was sinus tachycardia: a regular heart rate of more than 100 beats per minute.⁠¹ The more alcohol on the breath, the more often such a rhythm disturbance, and above all a fast heart rate, was seen.⁠¹ In about 3,000 of the same visitors, the heart beat 91 times per minute on average and faster with more alcohol, while the timing of the electrical signal through the heart did not change.⁠⁵

In plain words: a drink mainly makes the heart beat faster. You can read what a normal resting heart rate is in what a normal heart rate is.

Why the heart speeds up is partly known. With more alcohol, the normal rise and fall of the heart rate with breathing became smaller, which the researchers saw as a shift in the nervous system that sets the heart’s pace without you thinking about it, a shift that can trigger rhythm disturbances.⁠¹ After drinking a lot quickly, palpitations can also be part of the hangover, which is linked to the build-up of acetaldehyde.⁠⁶ So the racing can come while you are drinking, and again during the hangover afterwards.

How long palpitations last after alcohol

None of these studies measured how long a racing heart lasts after a drink, so an honest answer has no fixed number of hours. What the sources do show is a link with timing. The fast heart rate went together with the alcohol still in the breath,⁠¹ palpitations after heavy drinking are part of a hangover,⁠⁶ and in people with atrial fibrillation, the drinks in the four hours before mattered for whether an episode came on.⁠⁷

For you, this means the racing is part of the alcohol and its aftermath. If palpitations keep coming back, Thuisarts advises writing down when they happen.⁠²

Are heart palpitations after alcohol dangerous?

In most cases, palpitations are not dangerous. Thuisarts lists alcohol among the common triggers, alongside caffeinated drinks, smoking and drugs, stress, too little sleep and heavy exertion.⁠² In a separate group of 4,131 people who were studied for their usual drinking habits, only the fast regular heart rate showed a weak link with alcohol.⁠¹

For atrial fibrillation, a heart rhythm disorder, alcohol does matter. Of 100 people whose atrial fibrillation came in episodes and who wore an alcohol sensor and an ECG patch for four weeks, 56 had at least one episode. One glass in the four hours before made an episode about twice as likely, and two or more glasses more than three times as likely.⁠⁷ If you already have atrial fibrillation, even one glass can bring an episode closer within a few hours.

A study in Australia followed 140 adults with atrial fibrillation who drank 10 or more glasses a week. Half stopped drinking and the other half drank as usual, for six months. The group that stopped went from about 17 to 2 glasses a week, had their atrial fibrillation come back later and spent a smaller share of the time in it than the group that kept drinking as usual: 0.5 versus 1.2 per cent of the time.⁠⁸ In plain words: in people with atrial fibrillation, drinking much less went together with fewer hours in an irregular rhythm.

Over the years, the picture is the same. Of 107,845 people in European cohorts who were followed for about 14 years, 5,854 developed atrial fibrillation, and each glass of 12 grams a day came with a slightly higher risk, the same for beer, wine and spirits.⁠⁴ A combined analysis of 13 studies with more than 10 million people found about 6 per cent more risk for each extra glass a day. In men, the risk rose evenly with each glass; in women, the risk rose above about 1.4 glasses a day.⁠³ So the long-term risk grows with how much you drink day after day, whatever the drink.

When to call your GP

Call your GP or the out-of-hours GP service straight away if palpitations come with chest pain or pressure that lasts at least a few minutes, shortness of breath, feeling faint, confusion or difficulty speaking, or nausea with sweating and looking pale.⁠² For women, which heart symptoms women notice goes further into the signs.

What you can do yourself

If the checks are normal, Thuisarts advises writing down when the palpitations happen and leaving out a suspected trigger for a while, to see whether they ease.⁠² Counting helps: a standard drink contains about 10 grams of pure alcohol, which is 250 ml of beer, 100 ml of wine or 35 ml of spirits.⁠⁶

On 25 June 2026 the Gezondheidsraad published advice on alcohol: there is no safe limit, and the old advice of at most one glass a day has been replaced by not drinking at all.⁠⁹ The Voedingscentrum follows that advice: not drinking is healthier and safer for all adults.⁠⁶ For another daily habit and the heart, read what moving too little does to your body.

What the heart scan measures

The heart scan gives you a score for where your heart and blood vessels stand today, and a starting value to compare against later. A questionnaire cannot see what rhythm your heart beats in. A rhythm shows up on an ECG, as in the Oktoberfest study.⁠¹ The heart scan is not a diagnosis. Whether your palpitations are atrial fibrillation is for a doctor to judge.

In summary

Above all, alcohol makes the heart beat faster, more so the more you drink, and palpitations can come back during the hangover. The sources give no fixed duration; the racing belongs to the alcohol and its aftermath. In most cases palpitations are not dangerous, but alcohol is linked to atrial fibrillation, both within a few hours of a drink and over years of drinking. Chest pain or pressure, shortness of breath, feeling faint, confusion or difficulty speaking are reasons to call your GP straight away.