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Q: Is it safe if I drink a lot of sugar-free Red Bulls?
A: No, it is not safe, even if you are drinking sugar-free.
The caffeine and other ingredients can cause symptoms, and I have personally seen a number of people come to the Emergency Room with rapid heart rates that needed medication to slow down.
Try not to drink more than two in a 24-hour period (or any energy drink for that matter -- sugar-free or not).
-- Answer from Dr. Cameron, a physician on JustAnswer.
Daily Answer is excerpted from the JustAnswer archives and features information provided by a Expert on JustAnswer.