An official website of the United States government.
| Chemical Name | Dosage | Reference |
|---|---|---|
| TRANS-TRANS-5-ETHYL-4,6,7-TRITHIA-2,8-DECADIENE-4-S-OXIDE | not available | Duke, 1992 * |
| TROLOX | IC50 (uM) =1000 | Duke, 1992 * |
| URSOLIC-ACID | not available | Ringbom, T., Seguar, L., Noreen, Y., Perera, P., Bohlin, L. 1998. Ursolic Acid from Plantago major, a Selective Inhibitor of Cyclooxygenase-2 Catalyzed Prostaglandin Biosynthesis. J. Nat. Prod., 61(10): 1212-1215. |
| URUSHIOL | not available | Williamson, E. M. and Evans, F. J., Potter's New Cyclopaedia of Botanical Drugs and Preparations, Revised Ed., Saffron Walden, the C. W. Daniel Co., Ltd., Essex UK, 362 pp, 1988, reprint 1989. |
| ZINGERONE | not available | Duke, 1992 * |
| Plant Name | Common Name | Chemical Count | Total Parts Per Million |
|---|---|---|---|
| Psidium cattleianum | Strawberry Guava | 2 | 0 |
| Psidium guajava | Guava | 5 | 400, 200 |
| Pteridium aquilinum | Bracken; Bracken Fern | 2 | 0 |
| Pterocarpus marsupium | Indian Kino; Malabar Kino; bijasal | 3 | 0 |
| Pterocarpus santalinus | Red Saunders | 2 | 0 |
| Pueraria montana | Kudzu; Kudsu | 4 | 0 |
| Punica granatum | Pomegranate; Grenadier (Fr.); Granatapfelbaum (Ger.); Granatapfelstrauch (Ger.); Zakuro (Jap.); Romanzeiro (Port.); Granado (Sp.); Mangrano (Sp.) | 12 | 10, 046, 400 |
| Pycnanthemum nudum | Nude Mountain Mint | 2 | 24, 258 |
| Pycnanthemum virginianum | Virginia Mountain Mint | 2 | 377 |
| Pyrus communis | Pear | 3 | 28 |
| Quassia amara | Bitterwood; Quassia | 1 | 0 |
| Quercus alba | White Oak | 4 | 200, 000 |
| Quercus infectoria | Aleppo Oak; Dyer's Oak; Gall Oak | 3 | 120, 000 |
| Quercus robur | English Oak | 4 | 200, 000 |
| Quercus rubra | Northern Red Oak | 3 | 160, 000 |
| Quercus suber | Cork Oak | 1 | 65, 000 |
| Quercus velutina | Black Oak | 1 | 0 |
| Quillaja saponaria | Soapbark | 1 | 150, 000 |
| Quisqualis indica | Rangoon Creeper | 1 | 0 |
| Rheum officinale | Chinese Rhubarb | 2 | 3, 654.3000984191895 |