Francis K S Lim
There are more than 54,000 dietary supplements on the market, sold under 1,000 different brands, according to consumer groups. Indeed, the Food and Drug Administration defines a supplement broadly, as an ingestible product containing a “dietary ingredient,” which may include vitamins, minerals, herbs or other botanicals, amino acids, and substances such as enzymes, organ tissues, glandulars and metabolites. And the industry is growing. Sales hit more than $30 billion in 2011, according to a report released last month by the Government Accountability Office, up from about $25 billion in 2009.