The metabolism of Loperamide can be decreased when combined with Rosiglitazone. The serum concentration of Loperamide can be decreased when it is combined with Deferasirox. The metabolism of Loperamide can be decreased when combined with Indinavir. The metabolism of Loperamide can be decreased when combined with Ropinirole. The metabolism of Loperamide can be decreased when combined with Mirabegron. The metabolism of Loperamide can be decreased when combined with Isavuconazonium. The metabolism of Loperamide can be decreased when combined with Rucaparib. The metabolism of Loperamide can be decreased when combined with Clozapine. The metabolism of Loperamide can be decreased when combined with Tamoxifen. The serum concentration of Naloxegol can be increased when it is combined with Loperamide. The metabolism of Loperamide can be decreased when combined with Sertraline. The metabolism of Loperamide can be decreased when combined with Lapatinib. The metabolism of Loperamide can be decreased when combined with Artemether. The serum concentration of Vincristine can be increased when it is combined with Loperamide. The metabolism of Loperamide can be decreased when combined with Chlorpromazine. The serum concentration of Loperamide can be increased when it is combined with Abiraterone. The metabolism of Loperamide can be decreased when combined with Imatinib. The metabolism of Loperamide can be decreased when combined with Chloroquine. The metabolism of Loperamide can be decreased when combined with Clarithromycin. The serum concentration of Loperamide can be increased when it is combined with Quazepam. The therapeutic efficacy of Loperamide can be decreased when used in combination with Sarilumab. The metabolism of Loperamide can be decreased when combined with Methadone. The serum concentration of Loperamide can be decreased when it is combined with Bosentan. The metabolism of Loperamide can be decreased when combined with Nefazodone. The metabolism of Loperamide can be decreased when combined with Celecoxib. The metabolism of Loperamide can be decreased when combined with Dronedarone. The metabolism of Loperamide can be decreased when combined with Clopidogrel. The metabolism of Loperamide can be decreased when combined with Lumefantrine. The metabolism of Loperamide can be decreased when combined with Idelalisib. The metabolism of Loperamide can be decreased when combined with Clemastine. The metabolism of Loperamide can be decreased when combined with Diltiazem. The metabolism of Loperamide can be increased when combined with Phenytoin. The metabolism of Loperamide can be decreased when combined with Desipramine. The serum concentration of Loperamide can be increased when it is combined with Mifepristone. The metabolism of Loperamide can be decreased when combined with Efavirenz. The metabolism of Loperamide can be decreased when combined with Tipranavir. The metabolism of Loperamide can be decreased when combined with Betaxolol. The metabolism of Loperamide can be decreased when combined with Paroxetine. The metabolism of Loperamide can be increased when combined with Phenobarbital. Loperamide may increase the constipating activities of Ramosetron. The metabolism of Loperamide can be decreased when combined with Thioridazine. The serum concentration of Edoxaban can be increased when it is combined with Loperamide. The metabolism of Loperamide can be decreased when combined with Eliglustat. The metabolism of Loperamide can be decreased when combined with Ticlopidine. The metabolism of Loperamide can be decreased when combined with Atomoxetine. The metabolism of Loperamide can be decreased when combined with Sulfamethoxazole. The serum concentration of Bosutinib can be increased when it is combined with Loperamide. The metabolism of Loperamide can be decreased when combined with Fluconazole. The serum concentration of Brentuximab vedotin can be increased when it is combined with Loperamide. The serum concentration of Loperamide can be increased when it is combined with Dasatinib. The metabolism of Loperamide can be increased when combined with Rifabutin. The metabolism of Loperamide can be decreased when combined with Crizotinib. The metabolism of Loperamide can be decreased when combined with Thiotepa. The serum concentration of Loperamide can be decreased when it is combined with Enzalutamide. The metabolism of Loperamide can be decreased when combined with Clotrimazole. The serum concentration of Doxorubicin can be increased when it is combined with Loperamide. The metabolism of Loperamide can be decreased when combined with Saquinavir. The metabolism of Loperamide can be increased when combined with Rifampicin. The metabolism of Loperamide can be decreased when combined with Methotrimeprazine. The metabolism of Loperamide can be decreased when combined with Quinine. The metabolism of Loperamide can be increased when combined with Carbamazepine. The serum concentration of Conivaptan can be increased when it is combined with Loperamide. The metabolism of Loperamide can be decreased when combined with Nelfinavir. The metabolism of Loperamide can be decreased when combined with Doxycycline. The metabolism of Loperamide can be decreased when combined with Terbinafine. The metabolism of Loperamide can be decreased when combined with Promazine. The metabolism of Loperamide can be decreased when combined with Itraconazole. The serum concentration of Loperamide can be increased when it is combined with Ivacaftor. The metabolism of Loperamide can be decreased when combined with Voriconazole. The serum concentration of Loperamide can be increased when it is combined with Panobinostat. The metabolism of Loperamide can be decreased when combined with Darifenacin. The serum concentration of the active metabolites of Dabigatran etexilate can be increased when Dabigatran etexilate is used in combination with Loperamide. The metabolism of Loperamide can be decreased when combined with Clomipramine. The metabolism of Loperamide can be increased when combined with Pentobarbital. The metabolism of Loperamide can be decreased when combined with Cinacalcet. The metabolism of Loperamide can be decreased when combined with Quinidine. The metabolism of Loperamide can be increased when combined with Secobarbital. The serum concentration of Loperamide can be increased when it is combined with Fusidic Acid. The metabolism of Loperamide can be decreased when combined with Sulfisoxazole. The serum concentration of Loperamide can be increased when it is combined with Luliconazole. The metabolism of Loperamide can be decreased when combined with Pioglitazone. The metabolism of Loperamide can be decreased when combined with Dihydroergotamine. The metabolism of Loperamide can be decreased when combined with Metoprolol. The metabolism of Loperamide can be decreased when combined with Losartan. The metabolism of Loperamide can be decreased when combined with Fluvoxamine. The serum concentration of Ranolazine can be increased when it is combined with Loperamide. The serum concentration of Loperamide can be decreased when it is combined with Dabrafenib. The metabolism of Loperamide can be decreased when combined with Clobazam. The serum concentration of Colchicine can be increased when it is combined with Loperamide. The serum concentration of Loperamide can be increased when it is combined with Cobicistat. The serum concentration of Loperamide can be increased when it is combined with Osimertinib. The metabolism of Loperamide can be increased when combined with Primidone. The metabolism of Loperamide can be decreased when combined with Ziprasidone. The metabolism of Loperamide can be decreased when combined with Olaparib. The metabolism of Loperamide can be decreased when combined with Trimethoprim. The metabolism of Loperamide can be decreased when combined with Boceprevir. The metabolism of Loperamide can be decreased when combined with Diphenhydramine. The metabolism of Loperamide can be decreased when combined with Dosulepin. The serum concentration of Loperamide can be increased when it is combined with Fosaprepitant. The metabolism of Loperamide can be decreased when combined with Telaprevir. The serum concentration of Topotecan can be increased when it is combined with Loperamide. The metabolism of Loperamide can be decreased when combined with Bupropion. The metabolism of Loperamide can be decreased when combined with Cyclosporine. The metabolism of Loperamide can be decreased when combined with Imipramine. The serum concentration of Afatinib can be increased when it is combined with Loperamide. The serum concentration of Loperamide can be increased when it is combined with Ceritinib. The metabolism of Loperamide can be decreased when combined with Crisaborole. The serum concentration of Everolimus can be increased when it is combined with Loperamide. The metabolism of Loperamide can be decreased when combined with Citalopram. The metabolism of Loperamide can be decreased when combined with Haloperidol. The metabolism of Loperamide can be decreased when combined with Posaconazole. The metabolism of Loperamide can be decreased when combined with Isradipine. The metabolism of Loperamide can be decreased when combined with Isoniazid. The metabolism of Loperamide can be decreased when combined with Telithromycin. The metabolism of Loperamide can be increased when combined with Nevirapine. The serum concentration of Ledipasvir can be increased when it is combined with Loperamide. The serum concentration of Loperamide can be decreased when it is combined with Tocilizumab. The serum concentration of Loperamide can be increased when it is combined with Stiripentol. The metabolism of Loperamide can be decreased when combined with Doxorubicin. The metabolism of Loperamide can be decreased when combined with Topiroxostat. The metabolism of Loperamide can be decreased when combined with Nicardipine. The metabolism of Loperamide can be decreased when combined with Fosamprenavir. The metabolism of Loperamide can be decreased when combined with Cocaine. The serum concentration of Loperamide can be decreased when it is combined with Peginterferon alfa-2b. The serum concentration of Prucalopride can be increased when it is combined with Loperamide. The serum concentration of Rifaximin can be increased when it is combined with Loperamide. The metabolism of Loperamide can be decreased when combined with Erythromycin. The serum concentration of Loperamide can be decreased when it is combined with St. John's Wort. The metabolism of Loperamide can be decreased when combined with Tranylcypromine. The serum concentration of Loperamide can be increased when it is combined with Netupitant.