Honestly..those numbers aren’t that high. If 5 hour energy commercials are accurate and there are five million users per week, those numbers of deaths don’t really make statistical significance except to trial lawyers looking for another corporation to steal from.
All it is is B-12 in a liquid form which is the most efficient way to take it after injection. Sports figures often take mega B-12 injections before games. It is legal, unlike steroids et al.