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| Chemical Name | Dosage | Reference |
|---|---|---|
| NARCOTINE | not available | Duke, 1992 * |
| NARINGENIN | not available | Economic & Medicinal Plant Research, 5: 197. |
| NIMBIDIN | not available | Duke, 1992 * |
| PELARGONIDIN | not available | Economic & Medicinal Plant Research, 5: 197. |
| PENTAGALLOYL-GLUCOSE | not available | Duke, 1992 * |
| PODOPHYLLOTOXIN | IC88=414 ppb | Bedows, E. and Hatfield, G.M. An Investigation of the Antiviral Activity of Podophyllum peltatum. J. Nat. Prod. 45: 725. |
| POLYDATIN | not available | Leung, A. Y. and Foster, S. 1995. Encyclopedia of Common Natural Ingredients 2nd Ed. John Wiley & Sons, New York. 649 pp. |
| POLYGONIN | not available | Leung, A. Y. and Foster, S. 1995. Encyclopedia of Common Natural Ingredients 2nd Ed. John Wiley & Sons, New York. 649 pp. |
| PROCYANIDINS | not available | Economic & Medicinal Plant Research, 5: 197. |
| PROTOCATECHUIC-ACID | not available | Duke, 1992 * |
| QUERCETAGITRIN | not available | Economic & Medicinal Plant Research, 5: 197. |
| QUERCETIN | 48-150 ug/ml | Duke, 1992 * |
| QUERCIMERITRIN | not available | Economic & Medicinal Plant Research, 5: 198. |
| QUERCITRIN | not available | Economic & Medicinal Plant Research, 5: 198. |
| RICIN | not available | Duke, 1992 * |
| ROSMARINIC-ACID | 50 ug/ml | Vlietinck, A.J. and Dommisse, R.A. eds. 1985. Advances in Medicinal Plant Research. Wiss. Verlag. Stuttgart. |
| ROSMARINIC-ACID | EC50=20 ug/ml | Duke, 1992 * |
| RUGOSIN-D | EC50=0.034 ug/ml | Duke, 1992 * |
| RUTIN | not available | Economic & Medicinal Plant Research, 5: 198. |
| SCOPADULCIC-ACID-B | ED50=0.039 uM | Duke, 1992 * |
| Plant Name | Common Name | Chemical Count | Total Parts Per Million |
|---|---|---|---|
| Rhamnus cathartica | Buckthorn; European Buckthorn | 1 | 0 |
| Rheum officinale | Chinese Rhubarb | 5 | 13, 025.70000076294 |
| Rheum palmatum | Chinese Rhubarb | 3 | 2, 030 |
| Rheum rhabarbarum | Rhubarb | 7 | 10, 500.799999952316 |
| Rhizophora mangle | Red Mangrove | 2 | 116, 800 |
| Rhododendron dauricum | Chinese Alpenrose | 2 | 0 |
| Rhododendron ponticum | Pontic Alpenrose | 2 | 0 |
| Rhodymenia palmata | Dulse | 2 | 121.60000002384186 |
| Rhus coriaria | Sicilian Sumac; Sumac; Tanner's Sumac | 4 | 0 |
| Rhus glabra | Smooth Sumac | 1 | 0 |
| Rhus toxicodendron | Poison Ivy | 2 | 0 |
| Rhynchosia minima | Burn Mouth Vine | 2 | 0 |
| Ribes nigrum | Black Currant | 10 | 10, 033 |
| Ribes rubrum | Red Currant; White Currant | 3 | 6, 932 |
| Ribes uva-crispa | Gooseberry | 6 | 3, 338 |
| Ricinus communis | Castorbean | 8 | 5, 000 |
| Robinia pseudoacacia | Black Locust | 3 | 40, 000 |
| Rollinia mucosa | Biriba; Lancewood | 2 | 2, 903.5999999046326 |
| Rosa canina | Rose; Dogbrier; Dog Rose | 9 | 62, 300.39999985695 |
| Rosa centifolia | Cabbage Rose | 4 | 0 |