| Similarity | Rank | |
|---|---|---|
| PDE5 | 0.881 | 36875 |
| vasodilation | 0.867 | 78390 |
| cavernosa | 0.865 | 55342 |
| PDE-5 | 0.859 | 59128 |
| phosphodiesterase | 0.856 | 53286 |
| corpora | 0.832 | 44508 |
| cGMP | 0.822 | 42119 |
| guanosine | 0.819 | 98672 |
| erectile | 0.815 | 8147 |
| Sildenafil | 0.815 | 23972 |
| vasodilator | 0.808 | 91177 |
| priapism | 0.802 | 70559 |
| penile | 0.796 | 18030 |
| disfunction | 0.795 | 77067 |
| monophosphate | 0.794 | 90460 |
| erections | 0.786 | 18370 |
| dysfunction | 0.785 | 6160 |
| Tadalafil | 0.780 | 37951 |
| Vardenafil | 0.778 | 62777 |
| endothelium | 0.776 | 73378 |
| Revatio | 0.773 | 93669 |
| dapoxetine | 0.770 | 38111 |
| nitric | 0.768 | 25998 |
| intersexual | 0.767 | 65660 |
| impotency | 0.766 | 51049 |