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| Chemical Name | Dosage | Reference |
|---|---|---|
| METHYL-GALLATE | MIC=12.5-50 ug/ml | Duke, 1992 * |
| PROANTHOCYANIDINS | not available | Duke, 1992 * |
| SANGUINARINE | LD50=292 (ivn rat) | Newall, C. A., Anderson, L. A. and Phillipson, J. D. 1996. Herbal Medicine - A Guide for Health-care Professionals. The Pharmaceutical Press, London. 296pp. |
| THYMOHYDROQUINONE | MIC=50-200 ug/ml | Duke, 1992 * |
| THYMOL | MIC=50-200 ug/ml | Duke, 1992 * |
| WITHAFERIN | not available | Hutchings, A, Scott, AH, Lewis, G, and Cunningham, A. 1996. Zulu Medicinal Plants. An inventory. University of Natal Press, Pietermaritzburg. 450 pp. |
| Plant Name | Common Name | Chemical Count | Total Parts Per Million |
|---|---|---|---|
| Quercus robur | English Oak | 1 | 0 |
| Quercus rubra | Northern Red Oak | 1 | 0 |
| Ravensara aromatica | Ravensara | 1 | 64 |
| Rheum officinale | Chinese Rhubarb | 1 | 25.700000762939453 |
| Rheum palmatum | Chinese Rhubarb | 1 | 0 |
| Rheum rhabarbarum | Rhubarb | 1 | 53 |
| Rhus coriaria | Sicilian Sumac; Sumac; Tanner's Sumac | 1 | 0 |
| Rhynchosia minima | Burn Mouth Vine | 1 | 0 |
| Ribes nigrum | Black Currant | 1 | 0 |
| Ricinus communis | Castorbean | 1 | 0 |
| Rosa canina | Rose; Dogbrier; Dog Rose | 1 | 0 |
| Rosa centifolia | Cabbage Rose | 1 | 0 |
| Rosa gallica | French Rose | 1 | 0 |
| Rosa multiflora | Multiflora Rose | 2 | 0 |
| Rosmarinus eriocalyx | Rosemary | 1 | 1, 410 |
| Rosmarinus officinalis | Rosemary | 2 | 23, 695 |
| Rosmarinus tomentosus | Hairy Rosemary | 1 | 1, 465 |
| Rosmarinus x lavandulaceus | Lavender Rosemary | 1 | 2, 255 |
| Rosmarinus x mendizabalii | Mendizabali's Rosemary | 1 | 805 |
| Rubus idaeus | Red Raspberry; Raspberry | 1 | 0 |