"I've always loved Red Bull," he said.
Red Bull's official site states that "the European Food Safety Authority (EFSA) concluded in its scientific opinion on the safety of caffeine (2015) that caffeine intake of up to 400 mg per day (five 8.4 fl oz cans or five cups of coffee) does not raise safety concerns for the general healthy adult population." "This is in line with similar findings from the US Food and Drug Administration (US FDA) and Health Canada," it adds.
Of course, consuming three Red Bulls in rapid succession may have different health implications than drinking five Red Bulls over the course of the day.