| Similarity | Rank | |
|---|---|---|
| PDE-5 | 0.958 | 59128 |
| phosphodiesterase | 0.949 | 53286 |
| Vardenafil | 0.893 | 62777 |
| erectile | 0.893 | 8147 |
| Sildenafil | 0.893 | 23972 |
| Tadalafil | 0.890 | 37951 |
| cavernosum | 0.881 | 79648 |
| priapism | 0.878 | 70559 |
| Revatio | 0.869 | 93669 |
| guanosine | 0.867 | 98672 |
| Levitra | 0.864 | 16011 |
| cGMP | 0.863 | 42119 |
| vasodilator | 0.853 | 91177 |
| Citrate | 0.848 | 40345 |
| dysfunction | 0.845 | 6160 |
| vasodilation | 0.844 | 78390 |
| Tadalis | 0.843 | 98791 |
| doxazosin | 0.841 | 81664 |
| isosorbide | 0.841 | 85080 |
| monophosphate | 0.839 | 90460 |
| vardenafil | 0.837 | 24395 |
| Dapoxetine | 0.836 | 69436 |
| citrate | 0.833 | 18873 |
| impotence | 0.831 | 13237 |
| Erectile | 0.830 | 23511 |