1. Furia TE. Sequestrants in food. In Furia TE ed., CRC Handbook of Food Additives. 2nd ed. West Palm Beach, Fl:CRC Press; 1972:271-294.

2. Paragraph 170.50 Glycine (aminoacetic acid) in food for human consumption. Code of Federal Regulations Title 21: Food and Drug Administration, Department of Health and Human Services, Parts 170-199, revised April 1, 1990, Office of the Federal Register National Archives and Records Administration:Washington DC.

3. Ibid.; § 172.320 Amino acids.

4. Bekendam G. Technical Bulletin: Zinc gluconate lozenges. Akzo Chemie, Deventer, The Netherlands. January 22, 1985.

5. Acacia. Windholz M, Budavari S, Blumetti RF, et al, eds. The Merck Index. Rahway NJ:Merck & Company. 1983.

6. Briggs J, Finch P, Matulewicz MC, et al. Complexes of copper(II), calcium, and other metal ions with carbohydrates: Thin-layer igand- exchange chromatography and determination of relative stabilities of complexes. Carbohydrate Research. 1981;97:181-188.

7. Zarembo JE, Godfrey JC, Godfrey NJ. Zinc(II) in saliva: determination of concentrations produced by different formulations of zinc gluconate lozenges containing common excipients. Journal of Pharmaceutical Sciences. 1992;81:128-130.

8. U.S. Patent 5,059,419, dated October 22, 1991.

9. Osberger T. Tableting characteristics of pure crystalline fructose. Pharmaceutical Technology. June 1979.

10. Merluzzi VJ, Cipriano D, McNeil D, et al. Evaluation of zinc complexes on the replication of rhinovirus 2 in vitro. Research Communications in Chemical Pathology and Pharmacology. 1989;66: 425-440.