| Similarity | Rank | |
|---|---|---|
| PDE5 | 0.949 | 36875 |
| PDE-5 | 0.920 | 59128 |
| Sildenafil | 0.884 | 23972 |
| Tadalafil | 0.866 | 37951 |
| guanosine | 0.866 | 98672 |
| Vardenafil | 0.865 | 62777 |
| erectile | 0.860 | 8147 |
| monophosphate | 0.859 | 90460 |
| cavernosum | 0.856 | 79648 |
| Revatio | 0.853 | 93669 |
| Citrate | 0.846 | 40345 |
| vasodilator | 0.844 | 91177 |
| priapism | 0.842 | 70559 |
| cGMP | 0.841 | 42119 |
| inhibitors | 0.829 | 13701 |
| dysfunction | 0.822 | 6160 |
| Tadalis | 0.820 | 98791 |
| Dapoxetine | 0.818 | 69436 |
| impotency | 0.818 | 51049 |
| Silagra | 0.817 | 83472 |
| impotence | 0.816 | 13237 |
| Levitra | 0.813 | 16011 |
| inhibitor | 0.812 | 17578 |
| vasodilation | 0.810 | 78390 |
| Edegra | 0.809 | 95647 |