The metabolism of Finasteride can be decreased when combined with Lovastatin. The serum concentration of Finasteride can be increased when it is combined with Aprepitant. The metabolism of Finasteride can be decreased when combined with Clarithromycin. The serum concentration of Finasteride can be decreased when it is combined with St. John's Wort. The metabolism of Finasteride can be decreased when combined with Olaparib. The metabolism of Finasteride can be decreased when combined with Telaprevir. The metabolism of Finasteride can be decreased when combined with Itraconazole. The serum concentration of Finasteride can be decreased when it is combined with Dabrafenib. The metabolism of Finasteride can be increased when combined with Pentobarbital. The metabolism of Finasteride can be decreased when combined with Delavirdine. The serum concentration of Finasteride can be increased when it is combined with Osimertinib. The metabolism of Finasteride can be increased when combined with Rifampicin. The metabolism of Finasteride can be decreased when combined with Imatinib. The serum concentration of Finasteride can be increased when it is combined with Netupitant. The metabolism of Finasteride can be decreased when combined with Venlafaxine. The serum concentration of Finasteride can be decreased when it is combined with Enzalutamide. The metabolism of Finasteride can be decreased when combined with Ranolazine. The metabolism of Finasteride can be decreased when combined with Diltiazem. The metabolism of Finasteride can be decreased when combined with Erythromycin. The serum concentration of Finasteride can be increased when it is combined with Simeprevir. The serum concentration of Finasteride can be increased when it is combined with Palbociclib. The metabolism of Finasteride can be decreased when combined with Isavuconazonium. The metabolism of Finasteride can be decreased when combined with Dihydroergotamine. The metabolism of Finasteride can be decreased when combined with Lopinavir. The serum concentration of Finasteride can be decreased when it is combined with Bosentan. The metabolism of Finasteride can be decreased when combined with Ketoconazole. The metabolism of Finasteride can be decreased when combined with Verapamil. The serum concentration of Finasteride can be increased when it is combined with Ivacaftor. The metabolism of Finasteride can be decreased when combined with Doxycycline. The serum concentration of Finasteride can be increased when it is combined with Fusidic Acid. The serum concentration of Finasteride can be increased when it is combined with Stiripentol. The metabolism of Finasteride can be increased when combined with Primidone. The metabolism of Finasteride can be increased when combined with Phenytoin. The metabolism of Finasteride can be increased when combined with Rifapentine. The metabolism of Finasteride can be increased when combined with Nevirapine. The metabolism of Finasteride can be decreased when combined with Isradipine. The metabolism of Finasteride can be decreased when combined with Bortezomib. The metabolism of Finasteride can be decreased when combined with Cobicistat. The metabolism of Finasteride can be decreased when combined with Nelfinavir. The serum concentration of Finasteride can be decreased when it is combined with Deferasirox. The metabolism of Finasteride can be decreased when combined with Voriconazole. The metabolism of Finasteride can be decreased when combined with Sildenafil. The metabolism of Finasteride can be decreased when combined with Posaconazole. The metabolism of Finasteride can be decreased when combined with Nilotinib. The metabolism of Finasteride can be decreased when combined with Dronedarone. The metabolism of Finasteride can be decreased when combined with Rucaparib. The serum concentration of Finasteride can be decreased when it is combined with Mitotane. The metabolism of Finasteride can be decreased when combined with Fosamprenavir. The metabolism of Finasteride can be decreased when combined with Clotrimazole. The metabolism of Finasteride can be decreased when combined with Ziprasidone. The metabolism of Finasteride can be decreased when combined with Idelalisib. The metabolism of Finasteride can be decreased when combined with Atazanavir. The metabolism of Finasteride can be decreased when combined with Darunavir. The serum concentration of Conivaptan can be increased when it is combined with Finasteride. The serum concentration of Finasteride can be increased when it is combined with Fosaprepitant. The serum concentration of Finasteride can be increased when it is combined with Ceritinib. The serum concentration of Finasteride can be decreased when it is combined with Tocilizumab. The serum concentration of Finasteride can be decreased when it is combined with Siltuximab. The metabolism of Finasteride can be decreased when combined with Clemastine. The metabolism of Finasteride can be increased when combined with Rifabutin. The metabolism of Finasteride can be decreased when combined with Atomoxetine. The metabolism of Finasteride can be increased when combined with Phenobarbital. The metabolism of Finasteride can be decreased when combined with Amiodarone. The serum concentration of Finasteride can be increased when it is combined with Mifepristone. The metabolism of Finasteride can be decreased when combined with Crizotinib. The serum concentration of Finasteride can be increased when it is combined with Luliconazole. The metabolism of Finasteride can be decreased when combined with Fluvoxamine. The metabolism of Finasteride can be decreased when combined with Ticlopidine. The metabolism of Finasteride can be decreased when combined with Cyclosporine. The metabolism of Finasteride can be decreased when combined with Saquinavir. The metabolism of Finasteride can be decreased when combined with Telithromycin. The metabolism of Finasteride can be decreased when combined with Sulfisoxazole. The metabolism of Finasteride can be decreased when combined with Boceprevir. The metabolism of Finasteride can be decreased when combined with Nefazodone. The metabolism of Finasteride can be increased when combined with Lumacaftor. The metabolism of Finasteride can be decreased when combined with Indinavir. The metabolism of Finasteride can be increased when combined with Carbamazepine. The metabolism of Finasteride can be decreased when combined with Fluconazole. The metabolism of Finasteride can be increased when combined with Fosphenytoin. The serum concentration of Finasteride can be decreased when it is combined with Vemurafenib. The therapeutic efficacy of Finasteride can be decreased when used in combination with Sarilumab. The serum concentration of Finasteride can be increased when it is combined with Dasatinib.