There was an article posted on here within the last 6-8mths but for the life of me I cant recall enough about the title to search for it.
The crux of it was that Maurten is no longer a “new” product, and yet the science they continued to claim never was made available.
The summary of the findings were: The conclusions are once again straightforward: no significant differences between the Maurten group and the control drinks in performance (i.e. the power output in the sprints) or in subjective ratings of GI distress and effort.
edit: found the article - The World's Hottest Sports Drink Faces the Evidence - Outside Online