| DB00583 | Levocarnitine | approved, investigational | unknown | | Details |
| DB00661 | Verapamil | approved | unknown | inhibitor | Details |
| DB00127 | Spermine | experimental, nutraceutical | unknown | inhibitor | Details |
| DB03566 | Spermidine | experimental | unknown | inhibitor | Details |
| DB00468 | Quinine | approved | unknown | inhibitor | Details |
| DB00908 | Quinidine | approved, investigational | unknown | inhibitor | Details |
| DB01917 | Putrescine | experimental | unknown | inhibitor | Details |
| DB01035 | Procainamide | approved | unknown | inhibitor | Details |
| DB01053 | Benzylpenicillin | approved, vet_approved | unknown | inhibitor | Details |
| DB00345 | Aminohippuric acid | approved, investigational | unknown | inhibitor | Details |
| DB01165 | Ofloxacin | approved | unknown | inhibitor | Details |
| DB00184 | Nicotine | approved | unknown | inhibitor | Details |
| DB00123 | Lysine | approved, nutraceutical | unknown | inhibitor | Details |
| DB01137 | Levofloxacin | approved, investigational | unknown | inhibitor | Details |
| DB00536 | Guanidine | approved | unknown | inhibitor | Details |
| DB00575 | Clonidine | approved | unknown | inhibitor | Details |
| DB00501 | Cimetidine | approved, investigational | unknown | inhibitor | Details |
| DB00122 | Choline | approved, nutraceutical | unknown | inhibitor | Details |
| DB00583 | Levocarnitine | approved, investigational | unknown | substrateinhibitor | Details |
| DB00125 | Arginine | investigational, nutraceutical | unknown | inhibitor | Details |
| DB00594 | Amiloride | approved | unknown | inhibitor | Details |
| DB00458 | Imipramine | approved | unknown | inhibitor | Details |
| DB01151 | Desipramine | approved, investigational | unknown | inhibitor | Details |
| DB00987 | Cytarabine | approved, investigational | unknown | substrate | Details |
| DB00332 | Ipratropium | approved, experimental | unknown | substrate | Details |
| DB01409 | Tiotropium | approved | unknown | substrate | Details |
| DB08837 | Tetraethylammonium | experimental, investigational | unknown | | Details |
| DB06691 | Mepyramine | approved, vet_approved | unknown | | Details |
| DB13943 | Testosterone cypionate | approved | unknown | substrate | Details |
| DB13944 | Testosterone enanthate | approved | unknown | substrate | Details |
| DB13946 | Testosterone undecanoate | approved, investigational | unknown | substrate | Details |
| DB14006 | Choline salicylate | approved, nutraceutical | unknown | inhibitor | Details |
| DB14754 | Solriamfetol | approved | unknown | | Details |
| DB01043 | Memantine | approved, investigational | unknown | | Details |
| DB00983 | Formoterol | approved, investigational | unknown | substrate | Details |
| DB01005 | Hydroxyurea | approved | no | substrate | Details |