1. U.S. Department of Health and Human Services, Commission on Dietary Supplement Labels 1998 Background on dietary supplements http://web.health.gov/dietsupp/ch2.htm
2. Dietary supplements and vitamin- and mineral-fortified foods;FDA;Fed. Register,1966
3. Hegefeld , H.A. 2000 Overview of federal regulation of dietary supplements: past, present, and future trends http://leda.law.harvard.edu/leda/data/242/Hegefeld,_Heather.pdf
4. FDA regulation of ingredients in dietary supplements after passage of the Dietary Supplement Health and Education Act of 1994: an update;McNamara;Food Drug Law J,1996
5. Amin , R. Health claims for dietary supplements: regulatory history and summary with a focus on qualified health claims http://www.herbalgram.org/default.asp?c-health_claims