Coffee and heart palpitations: what should you know?

Caffeine can increase alertness and make the heart feel faster, stronger, or fluttery. Anxiety, poor sleep, dehydration, and low blood sugar can add to the sensation. Palpitations can also occur with Anaemia or Iron Deficiency Anaemia, Hyperthyroidism, or an abnormal rhythm such as Atrial Fibrillation. The feeling alone cannot identify its cause, and coffee-related timing does not prove that coffee is responsible. Note whether the sensation starts after coffee, how long it lasts, and whether the rhythm feels regular or uneven.

Stop or reduce coffee for a short period and avoid replacing it with energy drinks or other caffeinated products. Drink fluids regularly, eat at usual times, and prioritise sleep. Record the drink, timing, activity, symptoms, pulse sensation, and any medicines or supplements. If symptoms settle, discuss whether a gradual return to a smaller amount is appropriate. Do not change prescribed heart treatment without medical advice.

Call emergency services for palpitations with chest pain, severe breathlessness, fainting, collapse, or new weakness. Seek prompt medical advice if episodes last longer than usual, recur without coffee, occur with dizziness, or happen in someone with known heart disease. A clinician may check your pulse, blood pressure, heart rhythm, blood count, thyroid function, and hydration depending on the story.

Ask whether you need an electrocardiogram or rhythm monitor, whether medicines or supplements could contribute, and which warning symptoms should lead to urgent review. Mention any family history of rhythm problems.