Root of Panax ginseng, a member of Araliaceae family, has been used as herbal medicine and functional food in Asia for thousands of years. According to traditional Chinese medicine (TCM), ginseng is the most widely used “Qi-invigorating” herbs, which provides tonic and preventive effects by resisting oxidative stress, influencing energy metabolism and improving mitochondrial function. Very few reports have systematically measured cell mitochondrial bioenergetics after ginseng treatment.