| Similarity | Rank | |
|---|---|---|
| anti-depressant | 0.864 | 33508 |
| analgesic | 0.809 | 24504 |
| antidepressant | 0.804 | 29017 |
| aspirin | 0.803 | 11528 |
| tranquillizer | 0.795 | 22516 |
| ibuprofen | 0.795 | 96884 |
| barbiturate | 0.788 | 34844 |
| pethidine | 0.782 | 38241 |
| codeine | 0.782 | 51314 |
| sulphonamide | 0.780 | 43862 |
| antacid | 0.780 | 49418 |
| zantac | 0.780 | 65724 |
| anti-inflammatory | 0.779 | 28585 |
| tagamet | 0.779 | 64989 |
| tranquilliser | 0.777 | 24145 |
| antihistamine | 0.777 | 51844 |
| anti-ulcer | 0.775 | 86677 |
| tetracycline | 0.772 | 47272 |
| painkiller | 0.772 | 21719 |
| diamorphine | 0.767 | 73537 |
| piroxicam | 0.764 | 56501 |
| benzodiazepine | 0.763 | 38886 |
| ketamine | 0.761 | 32631 |
| mefloquine | 0.761 | 80954 |
| parenteral | 0.760 | 37046 |