The best evidence for efficacy from adequately designed randomized controlled trials (RCTs) is available for Coccinia indica and American ginseng. Chromium has been the most widely studied supplement. Other supplements with positive preliminary results in
Big Pharma is also showing interest for this emerging market and an example which illustrates this attention is the deal that Merck KGaA has just signed with Chi-Med under which the German drugmaker will develop new cancer treatments using traditional Chi