The FDA has a nice resource to review: http://www.fda.gov/ForConsumers/ConsumerUpdates/ucm096386.htm; you can sign up for updates. There is also a PDF version of a consumer brochure: http://www.fda.gov/downloads/Drugs/ResourcesForYou/Consumers/BuyingUsingMedicineSafely/EnsuringSafeUseofMedicine/GeneralUseofMedicine/UCM229033.pdf.
Happy Reading. Please see our recent blog on Happy Foods, too.