Heart palpitations the day after drinking

Alcohol can increase fluid loss and disturb sleep, leaving the body more sensitive to a noticeable heartbeat. Not eating normally can also contribute to low blood sugar. Some people develop an irregular rhythm after drinking, including atrial fibrillation. Palpitations are a symptom, not a diagnosis; anaemia, thyroid problems, anxiety, and other causes can occur independently of alcohol.

Rest, sip water or an oral rehydration drink, and eat a light meal if you can tolerate it. Avoid more alcohol, energy drinks, nicotine, and strenuous exercise while symptoms continue. Write down the amount and timing of alcohol, sleep, food, medicines, and the episode. If this happens repeatedly, arrange a review rather than trying to manage every episode at home.

Call emergency services for palpitations with chest pain, fainting, severe breathlessness, confusion, or collapse. Get same-day advice if the heartbeat remains fast or irregular after rest and fluids, or if vomiting prevents you from drinking. Urgent assessment is also sensible when episodes recur or you have known heart disease.

Ask whether an ECG, blood tests, or medication review is appropriate. Discuss whether alcohol, dehydration, or an underlying rhythm problem could be contributing, and ask how to respond if the sensation returns.