| Similarity | Rank | |
|---|---|---|
| impotence | 0.958 | 13237 |
| dysfunction | 0.949 | 6160 |
| Erectile | 0.942 | 23511 |
| impotency | 0.922 | 51049 |
| Levitra | 0.899 | 16011 |
| priapism | 0.896 | 70559 |
| PDE5 | 0.893 | 36875 |
| Dysfunction | 0.892 | 28970 |
| PDE-5 | 0.890 | 59128 |
| Impotence | 0.890 | 44506 |
| penile | 0.889 | 18030 |
| Cialis | 0.886 | 6987 |
| Viagra | 0.884 | 4769 |
| erections | 0.881 | 18370 |
| Vardenafil | 0.876 | 62777 |
| Tadalafil | 0.873 | 37951 |
| Sildenafil | 0.869 | 23972 |
| disfunction | 0.867 | 77067 |
| Peyronie's | 0.862 | 93376 |
| phosphodiesterase | 0.860 | 53286 |
| tadalafil | 0.855 | 13308 |
| vardenafil | 0.855 | 24395 |
| BPH | 0.853 | 42163 |
| ejaculation | 0.852 | 15522 |
| Revatio | 0.849 | 93669 |