QTc prolongation is a recognized marker of increased risk for fatal arrhythmias.In cardiology, the QT interval is a measure of the time between the start of the Q wave and the end of the T wave in the heart’s electrical cycle.In this study, participants who drank the energy drink had a significantly QTc prolongation of ≈10 ms 2 hours after energy drink consumption. In 2017, the American Heart Association published a study which suggested energy drinks are worse than caffeine-by-itself, which would mean there are some ingredient interactions which make energy drinks more dangerous than coffee. What about energy drink ingredients and Arrhythmias? ĮFSA adopts opinion on two ingredients commonly used in some energy drinks The Panel concluded that a sufficient margin of safety exists for mean and high-level regular consumers of energy drinks, drinking on average 125ml (0.5 cans) and 350ml (1.4 cans) per person per day respectively hence, exposure to taurine and d-glucuronolactone at these levels is not a safety concern. This European Commission cited above also ruled that caffeine-taurine-glucuronolactone combinations should not be considered dangerous. Interactions Between Caffeine, Taurine, and Glucuronolactone Maybe taurine keeps the heart rate from escalating further, but it’s hard to say because this study wasn’t blind or placebo-controlled, and there was no taurine-free caffeinated drink to compare the results against.
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