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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
Sambucus nigra European Alder; European Elder; European Elderberry; Elder; Black Elder 5 0
Santalum acuminatum Sweet Quandong; Quandong; Quandong Nut 2 72, 000
Santalum album White Sandalwood 3 0
Sassafras albidum Sassafras 2 0
Satureja hortensis Summer Savory 4 142, 800
Saussurea lappa Costus; Kuth 2 0
Schisandra chinensis Chinese Magnolia Vine; Schizandra; Wu Wei Zu; Wu Wei Zi; Magnolia Vine; Five-Flavor-Fruit 3 0
Schoenocaulon officinale Sabadilla 2 0
Sclerocarya caffra Marula 1 420, 000
Scutellaria baicalensis Chinese Skullcap; Huang Qin; Baikal Skullcap 3 0
Secale cereale Rye 5 17, 160
Senna obtusifolia Sicklepod 4 49, 555
Senna occidentalis Coffee Senna 2 16, 146
Serenoa repens Saw Palmetto; Scrub-Palmetto 4 914, 610
Sesamum indicum Sesame; Benneseed; Beni; Ajonjoli (Sp.); Sesamo (Sp.) 7 9, 254, 060
Silybum marianum Milk Thistle; Lady's Thistle 4 2, 256, 000
Simarouba glauca Simaruba Bark 5 665, 280
Sinapis alba White Mustard 6 135, 398
Skimmia arborescens Skimmia 5 206, 750
Smilax china China Root 1 0