| Active principles | Rating | Bibliogr. | Expand | |
|---|---|---|---|---|
| 1 | Indole Alkaloids | 100 | + | |
| 2 | Xanthines | 43 | + | |
| 3 | Tropanes | 42 | + | |
| 4 | Camptothecin | 31 | + | |
| 5 | Solanaceous Alkaloids | 30 | + | |
| 6 | Benzylisoquinolines | 28 | + | |
| 7 | Opiate Alkaloids | 25 | + | |
| 8 | Cinchona Alkaloids | 20 | + | |
| 9 | Amaryllidaceae Alkaloids | 12 | + | |
| 10 | Pilocarpine | 10 | + | |
| 11 | Ergot Alkaloids | 9 | + | |
| 12 | Colchicine | 8 | + | |
| 13 | Benzophenanthridines | 6 | + | |
| 14 | Pyrrolizidine Alkaloids | 3 | + |