| Similarity | Rank | |
|---|---|---|
| Ultram | 0.920 | 46580 |
| Lortab | 0.917 | 77503 |
| Vicodin | 0.915 | 36098 |
| Neurontin | 0.909 | 73439 |
| propoxyphene | 0.908 | 97081 |
| Hydrocodone | 0.899 | 59726 |
| DARVOCET | 0.897 | 44239 |
| Fioricet | 0.896 | 79337 |
| Percocet | 0.892 | 53614 |
| ULTRACET | 0.889 | 92923 |
| VICODIN | 0.885 | 44698 |
| HYDROCODONE | 0.884 | 38109 |
| Oxycontin | 0.882 | 61490 |
| Imitrex | 0.881 | 72341 |
| DARVON | 0.879 | 90925 |
| OXYCODONE | 0.879 | 46737 |
| Klonopin | 0.877 | 50409 |
| Effexor | 0.877 | 52961 |
| ULTRAM | 0.876 | 42384 |
| TRAMADOL | 0.875 | 35975 |
| Xanax | 0.874 | 33327 |
| PROPOXYPHENE | 0.869 | 66758 |
| Tramadol | 0.869 | 32170 |
| Wellbutrin | 0.868 | 46010 |
| PERCOCET | 0.867 | 44796 |