| Hydroxz - Hz | Nummer |
| Hydro-zimtsäure-chlorid | 2 / # 40 Tränen |
| Hygrin | 14 |
| Hygrocybe conica | 16 |
| Hygromycin B | 14 / 18 |
| Hymexazol | 14 / # 6 Augen |
| Hyoscin | 1 |
| Hyoscin-hydrobromid | |
| L-Hyoscyamin | xxx |
| Hyoscyamin | 14 / 1 |
| Hyoscyamin-hydrobromid | |
| (-)-Hyoscyamin-hydrochlorid | |
| Hyoscyamin-Salze | |
| Hyoscyamin-sulfat | |
| Hyoscyamus niger | |
| DL-Hypaphorin | 16 |
| Hypericin | 14 / # 32 Photo |
| Hypericum perforatum | 16 / # 32 Photo |
| Hyperosid | 14 |
| Hypholoma-Arten | 16 / # 227 (+) |
| Hypochlorite, anorganisch | 16 |