Market Research reports are excellent places to begin your research. They help define the market, identify segments, channels, key players and the competive environment. Reports on functional beverages are available in:
To do a thorough search for trade and business news on functional beverages revise your search to include "nutraceuticals" and "drinks" as well. The best databases for finding trade news are:
The Food & Drug Administration regulates food labels, nutritional claims and additives. You can browse their web site to learn more about how these topics relate to functional beverages. Searching law reviews in LexisNexis for analyses of the regulation of funtional foods will also prove helpful.