There is a large market for dietary supplements in the United States. This market includes a wide variety of ingestible products designed to do things such as help you lose weight, increase sexual desire, increase muscle mass, reduce cholesterol, increase brain function, and others yet. Vitamins and multivitamins are part of this market but drugs that need and carry a Federal Drug Administration approval are not.

Geographic reference: United States
Year: 2005 and 2010
Market size: $21.3 and $28.1 billion respectively
Source: Natasha Singer, “Here’s to Your Health, So They Claim,” New York Times, Sunday Business, August 28, 2011, page 1, available online here.
Original source: Nutrition Business Journal