How to Deal With Heart PalpitationsIf you notice your heart starting to flutter, review all the medications and supplements you take to see if you can identify a cause, Dr. Cooperman says. "Stop any stimulant and caffeine-containing supplements, including energy drinks," he says. [19] If it's a prescription drug, over-the-counter medication, or supplement you believe is causing your heart palpitations, ask your doctor about alternatives. But if you have a history of heart disease and experience palpitations that are occurring more frequently or getting worse, they can be a symptom of a more serious underlying condition. [18] Other symptoms that suggest heart palpitations may be a sign of something serious include:Chest painFaintingTrouble breathingDizziness or lightheadednessIf you experience these issues, visit your doctor to determine the underlying cause and get the right treatment for your condition.