| Similarity | Rank | |
|---|---|---|
| vasodilation | 0.931 | 78390 |
| PDE-5 | 0.873 | 59128 |
| L-arginine | 0.864 | 67070 |
| nitric | 0.859 | 25998 |
| relaxant | 0.856 | 60673 |
| PDE5 | 0.853 | 36875 |
| adrenergic | 0.850 | 99859 |
| antihypertensive | 0.849 | 68930 |
| phosphodiesterase | 0.844 | 53286 |
| prostaglandin | 0.840 | 68337 |
| adenosine | 0.835 | 62814 |
| analgesic | 0.829 | 35586 |
| angiotensin | 0.828 | 66273 |
| beta-blockers | 0.827 | 84240 |
| anticholinergic | 0.825 | 98701 |
| inhibitors | 0.821 | 13701 |
| aldosterone | 0.820 | 90103 |
| cavernosa | 0.819 | 55342 |
| hypotension | 0.814 | 45505 |
| norepinephrine | 0.811 | 48622 |
| endothelium | 0.811 | 73378 |
| pharmacologic | 0.810 | 72757 |
| nitroglycerin | 0.809 | 57416 |
| cavernosum | 0.808 | 79648 |
| inhibitor | 0.807 | 17578 |