Ginseng is a legendary tonifier, first written about during the Sui Dynasty of China (580-601 A.D.). In traditional Chinese herbalism it is rarely used alone, but rather is combined with herbs considered to assist and augment its tonifying actions. Planetary Herbals Ginseng Revitalizer is based on a classic formula that has been in continued use since 1078 A.D. This dynamic combination is designed to support energy levels without the use of stimulants.