Licorice may increase cortisol for waking when traveling, but timing is important to avoid excessive peaks.

“I suppose one instance where you might want to use licorice would be if you're traveling and you're trying to wake up at a particular location, because licorice has these effects on cortisol and cortisol is associated with the waking phenomenon and alertness and energy, you could use it in that regard. However, I would be careful to time it so that you're not getting two cortisol increases throughout the day, two peaks.”