Palpitations after eating and lying down

After a meal, digestion can alter circulation and nervous-system signals. Lying down may bring the chest closer to your awareness and can make pounding or fluttering easier to feel. A full stomach, reflux discomfort, caffeine, alcohol, dehydration, low blood sugar, anaemia, thyroid overactivity, or anxiety may add to the sensation. An irregular rhythm, including atrial fibrillation, is another possibility; the symptom alone cannot establish its cause.

Record whether sitting up changes the sensation, and whether you notice burning, regurgitation, breathlessness, swelling, or an irregular pulse. [Atrial Fibrillation](/conditions/atrial-fibrillation/) and [Dehydration](/conditions/dehydration/) provide useful background for two conditions that may be assessed.

Remain upright for a while after meals if that is comfortable, take small sips of water, and avoid a personal food or drink trigger. Keep a diary with meal size, timing, posture, symptoms, and medicines. Do not use someone else’s heart medicine or alter a prescription yourself.

Seek emergency help for palpitations with chest pressure, severe difficulty breathing, fainting, new confusion, or sudden one-sided weakness. Contact a clinician promptly when episodes last longer than usual, recur during rest, or accompany dizziness or swelling. Assessment may include an electrocardiogram and blood tests.

Ask whether posture, reflux symptoms, or a medicine could be involved, and whether you should have rhythm monitoring or tests for anaemia, thyroid problems, or glucose changes.