Ginseng
Ginseng, an adaptogenic herb, is known to increase energy, has some anti-fatigue components, supposedly relieves stress, and increase memory. Right now it’s suspected that ginseng helps stimulate the hypothalamic and pituitary glands, which then secrete something called adrenal corticotropic hormone. With a name like that, it can’t possibly be bad. Ginseng is nothing that’s naturally created by your body, so having this in your drink certainly won’t hurt. 200mg/day seems to be the standard dose, but you can safely take up to 2700mg. Rare side effects such as diarrhea and headache have been reported. Usually, the energy drinks that contain Ginseng have small amounts of this herb included.
