Any noxious substances within MONSTER??
Answers: The high level of caffeine in energy drinks can create problems for several consumers. Caffeine is a stimulant, and is known to be mildly addictive. When used excessively, it can create stomach ulcers, uneasiness, headaches and heart palpitations, but how much caffeine it takes to motivation problems varies from person to personage.
That would explain some of the things you feel sometimes..they have a ton of caffeine..
I read an article saw that the taurine can cause strokes if you drink energy drinks on a daily basis. You can also dehydrate yourself with the caffine. And the other "uppers" in the drink can organize to heart issues.
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