IT WORKS FOR ME
I get a noticeable boost of energy when I use this product on long runs, in particular when I used some at the halfway point of my last marathon and felt completely reinvigorated.  I am willing to accept that this may be completely psychosomatic or unique to my body chemistry in some way, but since it does work for me, I intend to keep using it and not look too deeply into the science (or lack thereof) behind it!
Rating: 4 stars