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| Chemical Name | Dosage | Reference |
|---|---|---|
| USHINSUNINE | not available | Duke, 1992 * |
| VANILLIC-ACID | not available | Duke, 1992 * |
| VERBASCOSIDE | not available | Duke, 1992 * |
| WARANGALONE | 25 ug/ml | Duke, 1992 * |
| WARANGALONE | 12-13 ug/ml | Duke, 1992 * |
| WITHAFERIN-A | not available | Jeffery B. Harborne and H. Baxter, eds. 1983. Phytochemical Dictionary. A Handbook of Bioactive Compounds from Plants. Taylor & Frost, London. 791 pp. |
| WITHANOLIDE-D | not available | Jeffery B. Harborne and H. Baxter, eds. 1983. Phytochemical Dictionary. A Handbook of Bioactive Compounds from Plants. Taylor & Frost, London. 791 pp. |
| XANTHATIN | not available | Merck 11th Edition |
| XANTHONES | not available | Duke, 1992 * |
| ZINC | 50 mg/day | Werbach, M. 1993. Healing with Food. Harper Collins, New York, 443 pp. |
| Plant Name | Common Name | Chemical Count | Total Parts Per Million |
|---|---|---|---|
| Rheum palmatum | Chinese Rhubarb | 21 | 21, 918.5 |
| Rheum rhabarbarum | Rhubarb | 15 | 34, 583 |
| Rhizophora mangle | Red Mangrove | 4 | 124, 743 |
| Rhododendron dauricum | Chinese Alpenrose | 8 | 0 |
| Rhododendron ferrugineum | Rusty-Leaved Alpenrose | 2 | 0 |
| Rhododendron molle | Yellow Azalea | 1 | 0 |
| Rhododendron ponticum | Pontic Alpenrose | 4 | 0 |
| Rhodymenia palmata | Dulse | 2 | 279 |
| Rhus copallina | Dwarf Sumac; Winged Sumac | 1 | 448 |
| Rhus coriaria | Sicilian Sumac; Sumac; Tanner's Sumac | 4 | 0 |
| Rhus glabra | Smooth Sumac | 2 | 214 |
| Rhus toxicodendron | Poison Ivy | 2 | 0 |
| Rhynchosia minima | Burn Mouth Vine | 2 | 0 |
| Ribes nigrum | Black Currant | 30 | 186, 716 |
| Ribes rubrum | Red Currant; White Currant | 9 | 61, 232 |
| Ribes uva-crispa | Gooseberry | 10 | 22, 905 |
| Ricinus communis | Castorbean | 5 | 0 |
| Robinia pseudoacacia | Black Locust | 6 | 0 |
| Rollinia mucosa | Biriba; Lancewood | 1 | 5, 800 |
| Rosa canina | Rose; Dogbrier; Dog Rose | 11 | 357, 939 |