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I found this.....

Quote:

Ciwujia (pronounced: su wa ja) is an herbal product marketed to reduce fatigue associated with endurance exercise. Also known as Siberian Ginseng, is a root which comes from the northeast part of China. It has been used in traditional Chinese medicine for hundreds of years to treat fatigue and to boost the immune system.

Currently, there is minimal scientific evidence to support product claims. For example, a series of studies in China and the U.S. claim to show that ciwujia causes fat to be burned in preference to carbohydrates during exercise, which reduces fatigue from lactic acid buildup. However, these studies were performed by the makers of the commercial product, were not done with sound science, and (needless to say) have not been published in scientific journals.

Here is an example of how these companies try to use science to deceive us:

"In [two] clinical studies versus the leading sports drink Endurox R4 Improved performance by 55% and reduced muscle stress by 36%."
-- www.enduroxr4.com/clinical.htm

Whenever you see medical results being presented by companies selling you something, don’t believe whatever they say. In the first study, they compared R4 to Gatorade, and not any serious sport drink. This is a clear indication that the makers of R4 funded this study. In particular, the author of the second study was the guy who invented R4 – a clear conflict of interests. Additionally, the second study showed nothing more than that protein helps recovery. Duh. These studies were never subject to any professional review. Even if the studies were well run, they aren't giving us any reason to chose R4 over much less expensive alternatives, since they didn't do comparisons against them.

Nat.