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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 |
|---|---|---|---|
| Ocimum canum | Hoary Basil | 1 | 0 |
| Ocimum gratissimum | Agbo; Shrubby Basil | 2 | 7, 210 |
| Ocimum kilimandscharicum | African Blue Basil; Kenyan Perennial Basil | 1 | 16, 320 |
| Ocimum tenuiflorum | Anise-Scented Basil | 1 | 1, 710 |
| Oenothera biennis | Evening-Primrose | 1 | 0 |
| Olea europaea | Olive | 1 | 0 |
| Ononis spinosa | Spiny Restharrow; Restharrow; Hauhechel (Ger.) | 1 | 0 |
| Origanum majorana | Marjoram; Sweet Marjoram | 1 | 311, 000 |
| Origanum minutiflorum | Small-Flowered Oregano | 2 | 210 |
| Origanum onites | Oregano; Pot Marjoram | 2 | 558 |
| Origanum sipyleum | Bayircayi; Guveyoto | 2 | 6, 790 |
| Origanum syriacum | Za'Atar | 1 | 1, 050 |
| Origanum vulgare | Greek Oregano; Wild Oregano; Common Turkish Oregano | 3 | 3, 201, 139 |
| Paeonia lactiflora | Chih-Shao; Peony; Common Garden Peony; White Peony; Bai Shao (Chinese) | 2 | 0 |
| Papaver somniferum | Opium Poppy; Poppyseed Poppy | 1 | 0 |
| Persea americana | Avocado | 1 | 0 |
| Petroselinum crispum | Parsley | 1 | 32 |
| Peumus boldus | Boldo | 2 | 40, 018 |
| Phyllanthus amarus | not available | 1 | 865 |
| Phyllanthus emblica | Emblic; Myrobalan | 1 | 200, 000 |