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Dr. Duke's Phytochemical and Ethnobotanical Databases
U.S. Department of Agriculture
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5-Alpha-Reductase-Inhibitor

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List of activity chemicals.
Click on column headings to sort table by that column. *Unless otherwise noted all references are to (Duke, 1992)
Chemical Name Dosage Reference
ALIZARIN *
ALPHA-LINOLENIC-ACID *
ARACHIDONIC-ACID *
ARTOCARPIN IC50=85 uM *
BIOCHANIN-A IC50=35 uM *
BIOCHANIN-A IC>80=100 uM *
CURCUMIN *
LINOLEIC-ACID *
OLEIC-ACID *
PALMITIC-ACID *
PALMITOLEIC-ACID *
STEARIC-ACID *
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List of Activity Plants.
Click on column headings to sort table by that column.
Plant Name Common Name Chemical Count Total Parts Per Million
Brassica oleracea var. italica Broccoli; Heading Broccoli; Sprouting Broccoli; Cape Broccoli; Purple Cauliflower; Asparagus Broccoli; Winter Broccoli; Calabrese 5 210, 512
Brassica oleracea var. sabellica l. Kale; Curly Kale; Kitchen Kale; Scotch Kale 6 69, 520
Brassica oleracea var. viridis l. Collards; Cow Cabbage; Tall Kale; Tree Kale; Spring-Heading Cabbage 6 0
Brassica rapa Turnip; Seven-Top Turnip; Rapini 6 201, 035
Bryonia alba White Bryony 3 0
Bupleurum chinense Chai-Hu 2 0
Buxus sempervirens Boxwood 2 0
Cajanus cajan Pigeonpea 4 35, 228
Calendula officinalis Calendula; Pot-Marigold 4 676, 000
Calotropis sp. Giant Milkweed 3 361, 900
Camellia japonica Camellia; Common Camellia; Rose du Japon (Fr.); Camelia (Fr., Port.); Kamelie (Ger.); Tsubaki (Jap.); Camelia (Sp.); Japanese Tea 1 4, 647, 120
Camellia sinensis Tea 4 0
Canarium indicum Java-Olive; Manila Elemi 4 1, 446, 602
Cannabis sativa Marijuana; Marihuana; Indian Hemp; Hemp 2 1, 217, 200
Capparis spinosa Caper; Caperbush 4 774, 696
Capsicum annuum Bell Pepper; Green Pepper; Cherry Pepper; Sweet Pepper; Cone Pepper; Paprika 6 275, 178
Capsicum frutescens Cayenne; Chili; Tabasco; Hot Pepper; Spur Pepper; Red Chili 6 67, 566
Carapa guianensis Andiroba 3 700, 000
Carica papaya Papaya 6 1, 259, 398
Carthamus tinctorius Safflower 4 713, 014