Emailed Redbull on Oct 23rd:
Which organization offers their kosher certification on Reb Bull in the US? Does it apply to the Coconut flavor as well?
They just responded the following:
Thank you for your message and interest in Red Bull.
We like to inform you, that some beverages from the Red BullŪ product range are kosher certified, like for example Red BullŪ ENERGY DRINK and Red BullŪ SUGARFREE.
Red BullŪ THE COCONUT EDITION ENERGY DRINK is not kosher certified.
The kosher certification is done by an internationally recognized organization on a yearly bases.
We hope this answer is helpful for you.
With regards,
Red Bull International