Aspartame and heart palpitations

The product may contain caffeine or other stimulants, and palpitations can also accompany stress, dehydration, low blood glucose, anaemia, thyroid problems or an abnormal heart rhythm.

A palpitation can feel like pounding, racing, fluttering, a skipped beat or a pause followed by a strong beat. The sensation does not reveal the rhythm, so a clinician may check your pulse and use an ECG when episodes are concerning or recurrent.

Details that help include whether the pulse felt regular, what you were doing, how long the episode lasted, and whether chest discomfort, breathlessness, dizziness or faintness occurred.

Stop the suspected drink or food for the moment, check its label for caffeine and note the serving consumed. Sit down if light-headed, hydrate normally and avoid additional stimulants while symptoms settle. Do not take someone else's heart medicine.

Keep a log of episodes, pulse readings if easily available, products consumed, sleep, stress and medicines. A clinician can decide whether blood tests, an ECG or longer rhythm monitoring would be useful.

Call emergency services for palpitations with chest pain, severe shortness of breath, fainting, collapse, new weakness or persistent severe dizziness. Do not drive yourself when you feel faint or seriously unwell.

Book a prompt appointment if episodes recur, last longer than usual, happen during exercise, wake you from sleep, or occur with a known heart condition. The red-flag symptoms determine urgency, not whether aspartame was present.

You might ask whether your pulse pattern requires an ECG or monitor, whether medicines or caffeine could contribute, which blood tests are appropriate, and how to test a suspected dietary trigger without overlooking a rhythm problem.