Drinks marketed with health claims ranging from focus-boosting, antioxidant-infused, and superfood-filled can contain as much caffeine as three cups of coffee.
An exclusive Dailymail.com investigation has revealed that some widely-available products contain enough of the stimulant to risk deadly heart attacks in those with a little-known underlying cardiac condition.
It follows the tragic death of a 21 year-old Pennsylvania college student, who, according to court documents, suffered a fatal cardiac arrest after consuming lemonade containing 390 milligrams of caffeine.
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