| Similarity | Rank | |
|---|---|---|
| Vicodin | 0.953 | 36098 |
| Percocet | 0.938 | 53614 |
| Hydrocodone | 0.938 | 59726 |
| Ultram | 0.924 | 46580 |
| Darvocet | 0.917 | 87417 |
| Oxycontin | 0.917 | 61490 |
| Fioricet | 0.910 | 79337 |
| Xanax | 0.907 | 33327 |
| Neurontin | 0.891 | 73439 |
| Tramadol | 0.891 | 32170 |
| Ativan | 0.889 | 50052 |
| Klonopin | 0.887 | 50409 |
| Valium | 0.881 | 40151 |
| VICODIN | 0.879 | 44698 |
| ULTRACET | 0.878 | 92923 |
| HYDROCODONE | 0.877 | 38109 |
| OXYCODONE | 0.874 | 46737 |
| TRAMADOL | 0.873 | 35975 |
| LORTAB | 0.873 | 43915 |
| ULTRAM | 0.871 | 42384 |
| OxyContin | 0.870 | 45763 |
| propoxyphene | 0.869 | 97081 |
| Oxycodone | 0.869 | 56911 |
| hydrocodone | 0.865 | 24091 |
| BUTALBITAL | 0.864 | 50181 |