References: 

1. Tindle HA, Davis RB, Phillips RS, Eisenberg DM. Trends in use of complementary and alternative medicine by US adults: 1997-2002. Altern Ther Health Med. 2005;11:42-49.
2. Ernst E, Barnes J. Methodological approaches to investigating the safety of complementary medicine. Complement Ther Med. 1998;6:115-121.
3. Ernst E. Evaluation of complementary/alternative medicine. Z Arztl Fortbild Qualitatssich. 2007;
101:313-315.
4. Druss BG, Rosenheck RA. Use of practitioner-based complementary therapies by persons reporting mental conditions in the United States. Arch Gen Psychiatry. 2000;57:708-714.
5. Elkins G, Rajab MH, Marcus J. Complementary and alternative medicine use by psychiatric inpatients. Psychol Rep. 2005;96:163-166.
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Further Reading
•Bratman S, Girman AM. Mosby’s Handbook of Herbs and Supplements and Their Therapeutic Uses. St Louis: Mosby; 2002.
•Chen J. Recognition and prevention of herb-drug interactions. Medical Acupuncture. 1998/1999;10: 9-13.
•ConsumerLab. http://www.ConsumerLab.com. Accessed June 17, 2009.
•Harkness R, Bratman S. Mosby’s Handbook of Drug- Herb and Drug-Supplement Interactions. St Louis: Mosby; 2002.
•Lake J. The integration of traditional Chinese Medicine (TCM) and Western biomedicine, with emphasis on treatment of psychiatric disorders. Integrative Medicine. Aug/Sept 2004.
•Natural Medicines Comprehensive Database. 1995- 2009. http://www.naturaldatabase.com. Accessed June 17, 2009.
•Stargrove MB,Treasure J, McKee DL. Herb, Nutrient, and Drug Interactions: Clinical Implications and Therapeutic Strategies. St Louis: Mosby; 2007.