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Glucuronolactone is the active ingredient in RedBull brand energy drinks.
There have been three recent studies that measured the effects and efficacy of FEDs in different scenarios. Numerous supplement companies and retailers quote these studies when speaking of DGL. The inherent flaw with these studies is deducing the effect of DGL without controlling for caffeine and taurine.
Both compounds have documented effects on performance and counteracting fatigue. Nonetheless, they are of interest and noteworthy in the context of this article.
One study evaluated the effect of FEDs in counteracting driver sleepiness and concluded that they did reduce driver sleepiness and "driver-related incidents" with sleep restriction in monotonous driving environments14, 15. Empirically, most anyone walking out of convenience store could relay this, so the data is not surprising.
The next study evaluated FEDs on mood, memory and information processing on humans. The study controlled for sugar using a formula with sugar in one test group and a sugar-free in another. The sugar vs. sugar-free groups had no significant difference in test performance16. The FED vs. placebo did show improved attention and verbal reasoning. Interestingly, this study showed no illicit effect on memory recall.
A third study assessed psychomotor performance (reaction time, concentration, and memory), subjective alertness and physical endurance using FEDs (specifically Red Bull®). There was a statistically significant gain in aerobic and anaerobic performance using cycle ergometers.
Improvements in mental performance with increased reaction time, concentration, and immediate recall were noted. This study would reinforce the data that FEDs increase alertness17.
There have been three recent studies that measured the effects and efficacy of FEDs in different scenarios. Numerous supplement companies and retailers quote these studies when speaking of DGL. The inherent flaw with these studies is deducing the effect of DGL without controlling for caffeine and taurine.
Both compounds have documented effects on performance and counteracting fatigue. Nonetheless, they are of interest and noteworthy in the context of this article.
One study evaluated the effect of FEDs in counteracting driver sleepiness and concluded that they did reduce driver sleepiness and "driver-related incidents" with sleep restriction in monotonous driving environments14, 15. Empirically, most anyone walking out of convenience store could relay this, so the data is not surprising.
The next study evaluated FEDs on mood, memory and information processing on humans. The study controlled for sugar using a formula with sugar in one test group and a sugar-free in another. The sugar vs. sugar-free groups had no significant difference in test performance16. The FED vs. placebo did show improved attention and verbal reasoning. Interestingly, this study showed no illicit effect on memory recall.
A third study assessed psychomotor performance (reaction time, concentration, and memory), subjective alertness and physical endurance using FEDs (specifically Red Bull®). There was a statistically significant gain in aerobic and anaerobic performance using cycle ergometers.
Improvements in mental performance with increased reaction time, concentration, and immediate recall were noted. This study would reinforce the data that FEDs increase alertness17.
