| Similarity | Rank | |
|---|---|---|
| DARVON | 0.939 | 90925 |
| PROPOXYPHENE | 0.935 | 66758 |
| VICODIN | 0.935 | 44698 |
| PERCOCET | 0.935 | 44796 |
| ULTRACET | 0.933 | 92923 |
| FIORICET | 0.933 | 49676 |
| ULTRAM | 0.931 | 42384 |
| BUTALBITAL | 0.931 | 50181 |
| CODEINE | 0.931 | 30981 |
| CYCLOBENZAPRINE | 0.929 | 93247 |
| OXYCODONE | 0.926 | 46737 |
| HYDROCODONE | 0.924 | 38109 |
| LORTAB | 0.924 | 43915 |
| VALIUM | 0.923 | 43351 |
| TEMAZEPAM | 0.920 | 65865 |
| FLEXERIL | 0.920 | 81212 |
| CARISOPRODOL | 0.919 | 47824 |
| ZOFRAN | 0.919 | 75254 |
| KLONOPIN | 0.919 | 55427 |
| TRAMADOL | 0.918 | 35975 |
| PHOSPHATE | 0.917 | 78588 |
| NORCO | 0.916 | 45727 |
| MORPHINE | 0.912 | 61554 |
| TOPAMAX | 0.912 | 66695 |
| VOLTAREN | 0.911 | 83412 |