500 ml of a glucose based "energy" drink versus a control without the active ingredients (caffeine, taurine, glucuronolactone)
were given double blind to 11 sleepy participants driving an interactive real-car driving simulator. Lane drifting and a secondary
task (reaction time) were measured for two hours post-treatment. The energy drink significantly improved both indices, particularly
for the first hour.
Keywords: Amino acids - Energy drink - Caffeine - Taurine - Sleepiness - Driving
Received January 2, 2000 / Accepted February 1, 2000