| Active principles | Rating | Bibliogr. | Expand | |
|---|---|---|---|---|
| 1 | Nicotinic Acids | 100 | + | |
| 2 | Pyridinium Compounds | 67 | + | |
| 3 | Dihydropyridines | 50 | + | |
| 4 | Nicotine | 32 | + | |
| 5 | Picolines | 29 | + | |
| 6 | Isonicotinic Acids | 24 | + | |
| 7 | Aminopyridines | 21 | + | |
| 8 | 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine | 17 | + | |
| 9 | Quinolinic Acids | 16 | + | |
| 10 | Pyridones | 16 | + | |
| 11 | Pyrithioxin | 12 | + | |
| 12 | 2,2'-Dipyridyl | 10 | + | |
| 13 | Pheniramine | 10 | + | |
| 14 | 2-Pyridinylmethylsulfinylbenzimidazoles | 9 | + | |
| 15 | Carbolines | 8 | + | |
| 16 | Picolinic Acids | 8 | + | |
| 17 | Metyrapone | 6 | + | |
| 18 | Naphthylvinylpyridine | 4 | + | |
| 19 | Thienopyridines | 4 | + | |
| 20 | Betahistine | 4 | + | |
| 21 | Indinavir | 3 | + |