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| Chemical Name | Dosage | Reference |
|---|---|---|
| UMBELLIFERONE | 5-25 ug/ml | Gawron, A. and Glowniak, K. 1987. Cytostatic Activity of Coumarins in vitro. Planta Medica 1987: 526. |
| VINBLASTINE | not available | Martindale's 28th |
| VINCADIOLINE | not available | Wagner & Wolff, eds. 1977. New Natural Products (RS164. I56. 176) |
| VINCATHICINE | not available | Wagner & Wolff, eds. 1977. New Natural Products (RS164. I56. 176) |
| VINDESINE | not available | Martindale's 29th |
| WITHAFERIN-A | not available | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. |
| WITHAFERINILE | not available | List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979. |
| XANTHOTOXIN | 5-25 ug/ml | Duke, 1992 * |
| XANTHOTOXOL | 5-25 ug/ml | Gawron, A. and Glowniak, K. 1987. Cytostatic Activity of Coumarins in vitro. Planta Medica 1987: 526. |
| Plant Name | Common Name | Chemical Count | Total Parts Per Million |
|---|---|---|---|
| Pyrus communis | Pear | 1 | 0 |
| Ranunculus bulbosus | Bulbous Buttercup | 1 | 0 |
| Raphanus sativus | Radish | 1 | 16 |
| Ravensara aromatica | Ravensara | 1 | 170 |
| Rheum officinale | Chinese Rhubarb | 1 | 0 |
| Rheum rhabarbarum | Rhubarb | 1 | 8 |
| Rhododendron dauricum | Chinese Alpenrose | 2 | 0 |
| Ribes nigrum | Black Currant | 1 | 0 |
| Ribes uva-crispa | Gooseberry | 1 | 0 |
| Ricinus communis | Castorbean | 1 | 0 |
| Rosa canina | Rose; Dogbrier; Dog Rose | 1 | 0 |
| Rosa centifolia | Cabbage Rose | 1 | 0 |
| Rosa damascena | Damask Rose | 1 | 0 |
| Rosa gallica | French Rose | 1 | 4 |
| Rosmarinus officinalis | Rosemary | 1 | 0.5 |
| Rubus fruticosus | Blackberry | 2 | 0 |
| Rubus idaeus | Red Raspberry; Raspberry | 1 | 0 |
| Ruta graveolens | Rue | 5 | 0 |
| Salvia officinalis | Sage | 1 | 0 |
| Salvia sp. | Chia | 1 | 2, 136 |