Imperial Elixir Siberian Ginseng Extract Powder. Siberian Ginseng has been scientifically tested in Russia, then made famous by their athletes and astronauts. It is also widely used throughout China, where it is called Ciwujia. Traditionally, the hard roots were cooked for many hours so that the human body could assimilate and utilize the active constituents. We have made it easier for you by extracting the Siberian Ginseng roots at a 5 to 1 concentration, the result being one of the strongest, highest quality products available in capsules.