| Similarity | Rank | |
|---|---|---|
| PDE5 | 0.958 | 36875 |
| phosphodiesterase | 0.920 | 53286 |
| erectile | 0.890 | 8147 |
| vasodilator | 0.873 | 91177 |
| Tadalafil | 0.872 | 37951 |
| Vardenafil | 0.871 | 62777 |
| Sildenafil | 0.869 | 23972 |
| cavernosum | 0.859 | 79648 |
| cavernosa | 0.858 | 55342 |
| priapism | 0.858 | 70559 |
| vasodilation | 0.850 | 78390 |
| Levitra | 0.844 | 16011 |
| dysfunction | 0.841 | 6160 |
| Revatio | 0.836 | 93669 |
| Dapoxetine | 0.835 | 69436 |
| cGMP | 0.834 | 42119 |
| L-arginine | 0.831 | 67070 |
| guanosine | 0.830 | 98672 |
| Citrate | 0.828 | 40345 |
| vardenafil | 0.828 | 24395 |
| Erectile | 0.828 | 23511 |
| monophosphate | 0.817 | 90460 |
| hereupon | 0.817 | 30891 |
| impotence | 0.816 | 13237 |
| dapoxetine | 0.816 | 38111 |