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| Chemical Name | Dosage | Reference |
|---|---|---|
| YATRORICINE | not available | Duke, 1992 * |
| ZYGOPHYLLIN | not available | Duke, 1992 * |
| Plant Name | Common Name | Chemical Count | Total Parts Per Million |
|---|---|---|---|
| Hierochloe odorata | Sweet Grass; Vanilla-Scented Grass; Vanilla Grass; Seneca Grass; Manna Grass; Holy Grass | 1 | 0 |
| Hippophae rhamnoides | Sallow Thorn; Sea Buckthorn; Yellow Spine | 3 | 246, 405 |
| Holarrhena pubescens | Tellicherry Bark; Zhi Xie Mu; Conessi; Kurchi | 4 | 252, 000 |
| Hordeum vulgare | Barley; Barleygrass | 12 | 29, 150 |
| Houttuynia cordata | Fishwort; Dokudami; Yu Xing Cao | 5 | 25, 800 |
| Humulus lupulus | Hops | 8 | 0 |
| Huperzia spp | Cutleaf Clubmoss | 2 | 0 |
| Hura crepitans | Sandbox Tree | 3 | 0 |
| Hyacinthus orientalis | Hyacinth | 3 | 11.5 |
| Hydnocarpus kurzii | True Chaulmoogra | 1 | 73, 000 |
| Hydnocarpus wightiana | Hindi Chaulmoogra | 3 | 41, 110 |
| Hydrangea arborescens | Smooth Hydrangea; Hydrangea | 2 | 0 |
| Hydrangea paniculata | Peegee | 1 | 0 |
| Hydrastis canadensis | Goldenseal | 4 | 220, 000 |
| Hyoscyamus niger | Henbane | 4 | 136, 928 |
| Hypericum perforatum | Common St. Johnswort; Hypericum; Klamath Weed; St. John's-wort; Goatweed | 15 | 59, 113.50000023842 |
| Hyptis capitata | Knobweed | 1 | 0 |
| Hyptis suaveolens | Wild Hops | 3 | 6, 329 |
| Hyssopus officinalis | Hyssop | 8 | 199, 671 |
| Ilex paraguariensis | Mate; Paraguay Tea; South American Holly | 6 | 61, 500 |