| # | Drug |
|---|---|
| 1 | benproperine |
| 2 | benzonatate |
| 3 | bibenzonium |
| 4 | butamirate |
| 5 | clobutinol |
| 6 | clofedanol |
| 7 | cloperastine |
| 8 | dibunate |
| 9 | dimethoxanate |
| 10 | dropropizine |
| 11 | droxypropine |
| 12 | fedrilate |
| 13 | gefapixant |
| 14 | isoaminile |
| 15 | levodropropizine |
| 16 | meprotixol |
| 17 | morclofone |
| 18 | nepinalone |
| 19 | oxeladin |
| 20 | oxolamine |
| 21 | pentoxyverine |
| 22 | pipazetate |
| 23 | piperidione |
| 24 | prenoxdiazine |
| 25 | tipepidine |
| 26 | zipeprol |