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| Chemical Name | Dosage | Reference |
|---|---|---|
| MANGANESE | not available | Davies, S., and Stewart, A. 1990. Nutritional Medicine. Avon Books, New York. 509pp. |
| Plant Name | Common Name | Chemical Count | Total Parts Per Million |
|---|---|---|---|
| Rehmannia glutinosa | Chinese Foxglove | 1 | 24 |
| Rheum palmatum | Chinese Rhubarb | 1 | 46 |
| Rheum rhabarbarum | Rhubarb | 1 | 35 |
| Rhizophora mangle | Red Mangrove | 1 | 300 |
| Rhodymenia palmata | Dulse | 1 | 37 |
| Rhus copallina | Dwarf Sumac; Winged Sumac | 1 | 2, 790 |
| Rhus glabra | Smooth Sumac | 1 | 134 |
| Ribes nigrum | Black Currant | 1 | 27 |
| Ribes rubrum | Red Currant; White Currant | 1 | 30 |
| Ribes uva-crispa | Gooseberry | 1 | 16 |
| Rosa canina | Rose; Dogbrier; Dog Rose | 1 | 12 |
| Rosa laevigata | Cherokee Rose | 1 | 59 |
| Rosmarinus officinalis | Rosemary | 1 | 49 |
| Rubia cordifolia | Madder | 1 | 94 |
| Rubus chamaemorus | Cloudberry | 1 | 125 |
| Rubus chingii | Chinese Raspberry | 1 | 287 |
| Rubus idaeus | Red Raspberry; Raspberry | 1 | 452 |
| Rumex acetosa | Garden Sorrel | 1 | 60 |
| Rumex crispus | Curly Dock; Lengua De Vaca; Yellow Dock; Sour Dock | 1 | 58 |
| Ruscus aculeatus | Butcher's Broom; Box-Holly | 1 | 14 |