Data Views Plants (>= 1 Chemical): 422 All Chemicals: 2 CSV Excel PDF Click on column headings to sort table by that column Chemical Dosage References CHARCOAL 240 g/day/orl/manMartindale's 29th BETA-CAROTENE 30-300 mg/man/dayMartindale's 28th *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.