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| Chemical Name | Dosage | Reference |
|---|---|---|
| THEOBROMINE | not available | Duke, 1992 * |
| THEOPHYLLINE | not available | Jeffery B. Harborne and H. Baxter, eds. 1983. Phytochemical Dictionary. A Handbook of Bioactive Compounds from Plants. Taylor & Frost, London. 791 pp. |
| VERBENALIN | not available | Duke, 1992 * |
| VOACANGINE | not available | Grenand, P., Moretti, C., and Jacquemin, H. 1987. Pharmacopees Traditionnelles en Guyane. l'ORSTROM, Paris. 569 pp. |
| VOACRISTINE | not available | Duke, 1992 * |
| YOHIMBINE | not available | Duke, 1992 * |
| Plant Name | Common Name | Chemical Count | Total Parts Per Million |
|---|---|---|---|
| Humulus lupulus | Hops | 2 | 0 |
| Hyacinthus orientalis | Hyacinth | 3 | 145.59000009298325 |
| Hydrastis canadensis | Goldenseal | 3 | 0 |
| Hyoscyamus niger | Henbane | 3 | 0 |
| Hypericum perforatum | Common St. Johnswort; Hypericum; Klamath Weed; St. John's-wort; Goatweed | 5 | 373.5000002384186 |
| Hyptis suaveolens | Wild Hops | 4 | 6, 353 |
| Hyssopus officinalis | Hyssop | 4 | 138, 232 |
| Ilex paraguariensis | Mate; Paraguay Tea; South American Holly | 4 | 136, 500 |
| Illicium verum | Star Anise; Chinese Star Anise; Chinesischer Sternanis (Ger.); Sternanis (Ger.); anis de China (Sp.); anis estrellado (Sp.) | 3 | 21, 006 |
| Inula helenium | Elecampane | 1 | 0 |
| Ipomoea batatas | Sweet Potato | 1 | 0 |
| Ipomoea purga | Jalap | 1 | 0 |
| Ipomoea violacea | Ololiuqui; Tlitlitzen | 1 | 100 |
| Iris x germanica | Orris | 1 | 0 |
| Isanthus brachiatus | False Pennyroyal | 1 | 0 |
| Jasminum officinale | Jasmine; Poet's Jessamine | 2 | 1, 254 |
| Jateorhiza palmata | Calumba Root | 1 | 0 |
| Juglans nigra | Black Walnut | 2 | 13, 000 |
| Juglans regia | English Walnut | 2 | 828 |
| Juniperus communis | Common Juniper; Juniper | 4 | 58 |