| DB00389 | Carbimazole | approved, investigational | yes | inhibitor | Details |
| DB00550 | Propylthiouracil | approved, investigational | yes | inhibitor | Details |
| DB00763 | Methimazole | approved | yes | substrateinhibitor | Details |
| DB00509 | Dextrothyroxine | approved, investigational | unknown | | Details |
| DB11496 | 2-mercaptobenzothiazole | approved, experimental, vet_approved | unknown | inhibitor | Details |
| DB11085 | Resorcinol | approved | unknown | | Details |
| DB08604 | Triclosan | approved, investigational | unknown | weak inhibitor | Details |
| DB05382 | Iodine | approved, investigational | unknown | substrate | Details |