The serum concentration of Rilpivirine can be increased when it is combined with Omeprazole. The metabolism of Suprofen can be decreased when combined with Omeprazole. The metabolism of Teniposide can be decreased when combined with Omeprazole. The metabolism of Romidepsin can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Sulfadiazine. The serum concentration of the active metabolites of Fesoterodine can be increased when Fesoterodine is used in combination with Omeprazole. The metabolism of Trimethoprim can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Sulfisoxazole. The metabolism of Epoprostenol can be decreased when combined with Omeprazole. The metabolism of Testosterone can be decreased when combined with Omeprazole. The serum concentration of Omeprazole can be decreased when it is combined with Siltuximab. The serum concentration of Cefditoren can be decreased when it is combined with Omeprazole. The metabolism of Nateglinide can be decreased when combined with Omeprazole. The metabolism of Tretinoin can be decreased when combined with Omeprazole. The serum concentration of Thioridazine can be increased when it is combined with Omeprazole. The metabolism of Metronidazole can be decreased when combined with Omeprazole. The metabolism of Ixazomib can be decreased when combined with Omeprazole. The serum concentration of the active metabolites of Nelfinavir can be reduced when Nelfinavir is used in combination with Omeprazole resulting in a loss in efficacy. The serum concentration of Clozapine can be decreased when it is combined with Omeprazole. The metabolism of Amitriptyline can be decreased when combined with Omeprazole. The metabolism of Paramethadione can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Theophylline. The metabolism of Omeprazole can be increased when combined with Rifabutin. The metabolism of Omeprazole can be decreased when combined with Crisaborole. The serum concentration of Bosutinib can be decreased when it is combined with Omeprazole. The metabolism of Flunitrazepam can be decreased when combined with Omeprazole. The metabolism of Glimepiride can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Cimetidine. The metabolism of Glipizide can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Boceprevir. The metabolism of Lapatinib can be decreased when combined with Omeprazole. The metabolism of Idarubicin can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Diltiazem. The metabolism of Guanfacine can be decreased when combined with Omeprazole. The metabolism of Pioglitazone can be decreased when combined with Omeprazole. Omeprazole can cause a decrease in the absorption of Iron saccharate resulting in a reduced serum concentration and potentially a decrease in efficacy. The metabolism of Omeprazole can be decreased when combined with Imatinib. The metabolism of Omeprazole can be decreased when combined with Clemastine. The metabolism of Olodaterol can be decreased when combined with Omeprazole. The serum concentration of Topotecan can be increased when it is combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Telithromycin. The metabolism of Nilutamide can be decreased when combined with Omeprazole. The therapeutic efficacy of Omeprazole can be decreased when used in combination with Sarilumab. The serum concentration of Colchicine can be increased when it is combined with Omeprazole. The metabolism of Ospemifene can be decreased when combined with Omeprazole. Omeprazole can cause a decrease in the absorption of Ferric Citrate resulting in a reduced serum concentration and potentially a decrease in efficacy. The serum concentration of Omeprazole can be increased when it is combined with Dasatinib. The serum concentration of Itraconazole can be decreased when it is combined with Omeprazole. The metabolism of Omeprazole can be increased when combined with Carbamazepine. The metabolism of Axitinib can be decreased when combined with Omeprazole. The serum concentration of Omeprazole can be increased when it is combined with Ivacaftor. The metabolism of Loratadine can be decreased when combined with Omeprazole. The metabolism of Progesterone can be decreased when combined with Omeprazole. The serum concentration of Omeprazole can be increased when it is combined with Voriconazole. The metabolism of Omeprazole can be decreased when combined with Ropinirole. The serum concentration of Edoxaban can be increased when it is combined with Omeprazole. The serum concentration of Indinavir can be decreased when it is combined with Omeprazole. The serum concentration of Conivaptan can be increased when it is combined with Omeprazole. The metabolism of Omeprazole can be increased when combined with Rifapentine. The serum concentration of Omeprazole can be decreased when it is combined with Deferasirox. The metabolism of Pentamidine can be decreased when combined with Omeprazole. The metabolism of Acetaminophen can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Zucapsaicin. The metabolism of Trimethadione can be decreased when combined with Omeprazole. The metabolism of Famotidine can be decreased when combined with Omeprazole. The metabolism of Troglitazone can be decreased when combined with Omeprazole. The therapeutic efficacy of Clodronic Acid can be decreased when used in combination with Omeprazole. The metabolism of Mirtazapine can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Mexiletine. The metabolism of Omeprazole can be decreased when combined with Clarithromycin. The metabolism of Ibuprofen can be decreased when combined with Omeprazole. The metabolism of Moclobemide can be decreased when combined with Omeprazole. The metabolism of Rabeprazole can be decreased when combined with Omeprazole. The metabolism of Torasemide can be decreased when combined with Omeprazole. The metabolism of Temazepam can be decreased when combined with Omeprazole. The metabolism of Almotriptan can be decreased when combined with Omeprazole. The therapeutic efficacy of Etidronic acid can be decreased when used in combination with Omeprazole. The risk or severity of adverse effects can be increased when Bromocriptine is combined with Omeprazole. The metabolism of Methylphenobarbital can be decreased when combined with Omeprazole. The metabolism of Methadone can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Topiroxostat. The metabolism of Perphenazine can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Nefazodone. Omeprazole can cause a decrease in the absorption of Atazanavir resulting in a reduced serum concentration and potentially a decrease in efficacy. The metabolism of Flutamide can be decreased when combined with Omeprazole. The metabolism of Doxazosin can be decreased when combined with Omeprazole. The metabolism of Clotiazepam can be decreased when combined with Omeprazole. The metabolism of Alprazolam can be decreased when combined with Omeprazole. The metabolism of Tofacitinib can be decreased when combined with Omeprazole. The metabolism of Donepezil can be decreased when combined with Omeprazole. The metabolism of Acetylsalicylic acid can be decreased when combined with Omeprazole. The metabolism of Zaltoprofen can be decreased when combined with Omeprazole. The serum concentration of Saquinavir can be increased when it is combined with Omeprazole. The metabolism of Quazepam can be decreased when combined with Omeprazole. The metabolism of Leflunomide can be decreased when combined with Omeprazole. The serum concentration of Phenprocoumon can be increased when it is combined with Omeprazole. The metabolism of Tolterodine can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Fosamprenavir. The metabolism of Pipotiazine can be decreased when combined with Omeprazole. The metabolism of Zopiclone can be decreased when combined with Omeprazole. The risk or severity of adverse effects can be increased when Methysergide is combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Bortezomib. The metabolism of Omeprazole can be decreased when combined with Nicardipine. Omeprazole can cause a decrease in the absorption of Ferric Carboxymaltose resulting in a reduced serum concentration and potentially a decrease in efficacy. The metabolism of Zolpidem can be decreased when combined with Omeprazole. The metabolism of Gavestinel can be decreased when combined with Omeprazole. The metabolism of Ketobemidone can be decreased when combined with Omeprazole. The therapeutic efficacy of Mesalazine can be decreased when used in combination with Omeprazole. Omeprazole can cause a decrease in the absorption of Ferric pyrophosphate resulting in a reduced serum concentration and potentially a decrease in efficacy. The metabolism of Omeprazole can be decreased when combined with Lobeglitazone. The metabolism of Trabectedin can be decreased when combined with Omeprazole. The metabolism of Doconexent can be decreased when combined with Omeprazole. The serum concentration of Nilotinib can be decreased when it is combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Gemfibrozil. The metabolism of Omeprazole can be decreased when combined with Telaprevir. The metabolism of Zalcitabine can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Dosulepin. The metabolism of Omeprazole can be increased when combined with Nevirapine. The metabolism of Levomilnacipran can be decreased when combined with Omeprazole. The serum concentration of Nintedanib can be increased when it is combined with Omeprazole. The risk or severity of adverse effects can be increased when Omeprazole is combined with Atorvastatin. The metabolism of Omeprazole can be decreased when combined with Armodafinil. The metabolism of Ketoprofen can be decreased when combined with Omeprazole. Omeprazole can cause a decrease in the absorption of Iron Dextran resulting in a reduced serum concentration and potentially a decrease in efficacy. The metabolism of Proguanil can be decreased when combined with Omeprazole. The metabolism of Parecoxib can be decreased when combined with Omeprazole. The metabolism of Nortriptyline can be decreased when combined with Omeprazole. The therapeutic efficacy of Ibandronate can be decreased when used in combination with Omeprazole. The metabolism of Glyburide can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Ticagrelor.