| Similarity | Rank | |
|---|---|---|
| Tramadol | 0.957 | 32170 |
| Fioricet | 0.954 | 79337 |
| Klonopin | 0.937 | 50409 |
| Ativan | 0.932 | 50052 |
| TRAMADOL | 0.930 | 35975 |
| Lortab | 0.924 | 77503 |
| ULTRAM | 0.921 | 42384 |
| Darvocet | 0.920 | 87417 |
| Neurontin | 0.915 | 73439 |
| Clonazepam | 0.914 | 76585 |
| Hydrocodone | 0.913 | 59726 |
| ULTRACET | 0.913 | 92923 |
| BUTALBITAL | 0.912 | 50181 |
| Xanax | 0.908 | 33327 |
| Vicodin | 0.907 | 36098 |
| Provigil | 0.907 | 64564 |
| Valium | 0.904 | 40151 |
| Imitrex | 0.903 | 72341 |
| propoxyphene | 0.903 | 97081 |
| Lorazepam | 0.901 | 88737 |
| ALPRAZOLAM | 0.900 | 54478 |
| Alprazolam | 0.899 | 87921 |
| VALIUM | 0.898 | 43351 |
| FIORICET | 0.897 | 49676 |
| VICODIN | 0.897 | 44698 |