Understanding the Role of the F.D.A. in Drug Regulation (圖)

http://www.nytimes.com/2008/09/30/health/policy/30fda.html

For example, the F.D.A. does almost nothing to ensure that dietary supplements work as advertised. Only when supplements are proved to be unsafe or to contain regulated substances can the agency take action.


So any reference to the F.D.A. on dietary supplements or homeopathic medicines generally does not mean that the agency has found the products to be safe or effective.