An official website of the United States government.
| Chemical Name | Dosage | Reference |
|---|---|---|
| ASCORBIC-ACID | 1,000-3,000 mg/day | Duke, 1992 * |
| PECTIN | not available | Duke, 1992 * |
| Plant Name | Common Name | Chemical Count | Total Parts Per Million |
|---|---|---|---|
| Tribulus terrestris | Puncture-vine | 1 | 420 |
| Trichosanthes anguina | Snakegourd | 1 | 0 |
| Trifolium pratense | Red Clover; Purple Clover; Peavine Clover; Cowgrass | 1 | 11, 864 |
| Trigonella foenum-graecum | Fenugreek; Greek Clover; Greek Hay; Bockshornklee (Ger.); Alholva (Sp.) | 1 | 5, 600 |
| Triticum aestivum | Wheat | 1 | 0 |
| Tropaeolum majus | Nasturtium | 1 | 7, 550 |
| Tropaeolum tuberosum | Anu; Mashua | 1 | 9, 600 |
| Tulipa gesneriana | Tulip | 1 | 0 |
| Turnera diffusa | Damiana | 1 | 983 |
| Ullucus tuberosus | Melloco; Ulluco | 1 | 3, 500 |
| Ulmus rubra | Slippery Elm; Red Elm | 1 | 0 |
| Urtica dioica | European Nettle; Stinging Nettle | 2 | 6, 060 |
| Vaccinium corymbosum | Blueberry | 1 | 878 |
| Vaccinium macrocarpon | Cranberry; Large Cranberry; American Cranberry | 2 | 123, 600 |
| Vaccinium myrtillus | Bilberry; Whortleberry; Dwarf Bilberry | 2 | 154, 950 |
| Vaccinium vitis-idaea | Cowberry; Lingen; Lingonberry | 2 | 17, 595 |
| Valeriana officinalis | Valerian; Common Valerian; Garden-Heliotrope | 1 | 0 |
| Verbascum thapsus | Mullein; Velvetplant; Flannelleaf; Flannelplant; Great Mullein | 1 | 3, 880 |
| Viburnum opulus | Crampbark; European Cranberry Bush; Guelder Rose; Snowballbush | 2 | 704, 400 |
| Vicia faba | Broadbean; Faba Bean; Habas | 1 | 7, 665 |