An official website of the United States government.
| Chemical Name | Dosage | Reference |
|---|---|---|
| PINENE | not available | Duke, 1992 * |
| PRIMIN | not available | Duke, 1992 * |
| PROPYL-GALLATE | not available | Martindale's 28th |
| PROTOCATECHUIC-ACID | not available | Duke, 1992 * |
| QUERCETIN | not available | Jeffery B. Harborne and H. Baxter, eds. 1983. Phytochemical Dictionary. A Handbook of Bioactive Compounds from Plants. Taylor & Frost, London. 791 pp. |
| QUINIDINE | not available | Duke, 1992 * |
| QUININE | not available | Duke, 1992 * |
| REYNOSIN | not available | Tucker, A. O. and Debaggio, T. 2000. The Big Book of Herbs. Interweave Press, Inc. Loveland, CO. 688 pp. |
| RHAMNETIN | not available | Jeffery B. Harborne and H. Baxter, eds. 1983. Phytochemical Dictionary. A Handbook of Bioactive Compounds from Plants. Taylor & Frost, London. 791 pp. |
| SANTALOL | not available | Duke, 1992 * |
| SANTAMARIN | not available | Tucker, A. O. and Debaggio, T. 2000. The Big Book of Herbs. Interweave Press, Inc. Loveland, CO. 688 pp. |
| SCOPOLAMINE | not available | Duke, 1992 * |
| SESAMIN | not available | Duke, 1992 * |
| SESAMOL | not available | Jeffery B. Harborne and H. Baxter, eds. 1983. Phytochemical Dictionary. A Handbook of Bioactive Compounds from Plants. Taylor & Frost, London. 791 pp. |
| SESAMOLIN | not available | Duke, 1992 * |
| SORBIC-ACID | not available | Martindale's 29th |
| TANNIC-ACID | not available | Duke, 1992 * |
| TARAXINIC-ACID-1'-O-BETA-D-GLUCOPYRANOSIDE | not available | Duke, 1992 * |
| THEOPHYLLINE | not available | Martindale's 29th |
| THYMOL | not available | Duke, 1992 * |
| Plant Name | Common Name | Chemical Count | Total Parts Per Million |
|---|---|---|---|
| Quercus infectoria | Aleppo Oak; Dyer's Oak; Gall Oak | 2 | 0 |
| Quercus robur | English Oak | 1 | 0 |
| Quercus rubra | Northern Red Oak | 2 | 0 |
| Quercus suber | Cork Oak | 1 | 0 |
| Quercus velutina | Black Oak | 1 | 0 |
| Quisqualis indica | Rangoon Creeper | 2 | 130, 140 |
| Raphanus sativus | Radish | 5 | 7, 202.200000762939 |
| Rauvolfia serpentina | Indian Snakeroot; Serpentine Wood | 2 | 0 |
| Rauvolfia tetraphylla | Four-Leaf Devilpepper; Pinque-Pinque | 1 | 0 |
| Rauvolfia vomitoria | African Snakeroot | 1 | 0 |
| Ravensara aromatica | Ravensara | 10 | 1, 662 |
| Rehmannia glutinosa | Chinese Foxglove | 1 | 74, 000 |
| Rheum officinale | Chinese Rhubarb | 4 | 9, 000 |
| Rheum palmatum | Chinese Rhubarb | 8 | 694.5 |
| Rheum rhabarbarum | Rhubarb | 6 | 115 |
| Rhizophora mangle | Red Mangrove | 2 | 116, 800 |
| Rhododendron dauricum | Chinese Alpenrose | 3 | 0 |
| Rhododendron ferrugineum | Rusty-Leaved Alpenrose | 1 | 0 |
| Rhododendron ponticum | Pontic Alpenrose | 2 | 0 |
| Rhodymenia palmata | Dulse | 2 | 0 |