Source: All tables in this appendix are adapted with permission from Caffeine Content of Food and Drugs. Center for Science in the Public Interest Web site. September 2007. http://www.cspinet.org/new/cafchart.htm. Accessed August 10, 2010. (Most information was obtained from company Web sites or direct inquiries. Serving sizes are based on commonly eaten portions, pharmaceutical instructions, or the amount of the leading-selling container size. For example, beverages sold in 16-oz or 20-oz bottles were counted as one serving. Additional information: Juliano LM, Griffiths RR. Caffeine. In: Lowinson JH, Ruiz P, Millman RB, Langrod JG, eds. Substance Abuse: A Comprehensive Textbook. 4th ed. Baltimore: Lippincott, Williams, & Wilkins; 2005:403–421.)