Data Views Plants (>= 1 Chemical): 168 All Chemicals: 2 CSV Excel PDF Click on column headings to sort table by that column Chemical Dosage References GLYCINE --Martindale's 29th METHANYLSULFONYLMETHANE --Abel, R. 1999. The Eye Care Revolution. Kensington Publishing Corp., NY. 453 pp. $16.00. *Unless otherwise noted all references are to Duke, James A. 1992. Handbook of phytochemical constituents of GRAS herbs and other economic plants. Boca Raton, FL. CRC Press.