The metabolism of Cinnarizine can be decreased when combined with Omeprazole. The metabolism of Aceclofenac can be decreased when combined with Omeprazole. The therapeutic efficacy of Tiludronic acid can be decreased when used in combination with Omeprazole. The metabolism of Prasugrel can be decreased when combined with Omeprazole. The metabolism of Hydromorphone can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Dosulepin. The metabolism of Oxiconazole can be decreased when combined with Omeprazole. The serum concentration of Ketoconazole can be decreased when it is combined with Omeprazole. The metabolism of Valsartan 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 metabolism of Eletriptan can be decreased when combined with Omeprazole. The metabolism of clomethiazole can be decreased when combined with Omeprazole. The serum concentration of Omeprazole can be decreased when it is combined with Mitotane. The risk or severity of adverse effects can be increased when Lisuride is combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Manidipine. The metabolism of Mephenytoin can be decreased when combined with Omeprazole. The serum concentration of Escitalopram can be increased when it is combined with Omeprazole. The risk or severity of adverse effects can be increased when Ergotamine is combined with Omeprazole. The serum concentration of Ledipasvir can be decreased when it is combined with Omeprazole. The metabolism of Teniposide can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Verapamil. The serum concentration of Omeprazole can be decreased when it is combined with Teriflunomide. The metabolism of Levomilnacipran can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Telithromycin. The metabolism of Omeprazole can be decreased when combined with Isavuconazonium. The metabolism of Naproxen can be decreased when combined with Omeprazole. The metabolism of Rofecoxib can be decreased when combined with Omeprazole. The metabolism of Alprazolam can be decreased when combined with Omeprazole. The metabolism of Treprostinil can be decreased when combined with Omeprazole. The metabolism of Methsuximide can be decreased when combined with Omeprazole. The metabolism of Metronidazole can be decreased when combined with Omeprazole. The metabolism of Enasidenib can be decreased when combined with Omeprazole. The therapeutic efficacy of Etidronic acid can be decreased when used in combination with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Zucapsaicin. The metabolism of Adinazolam can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Idelalisib. The serum concentration of Ibrutinib can be increased when it is combined with Omeprazole. The serum concentration of Clozapine can be decreased when it is combined with Omeprazole. The metabolism of Niclosamide can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Amiodarone. The metabolism of Etoricoxib can be decreased when combined with Omeprazole. The metabolism of Dolasetron can be decreased when combined with Omeprazole. The serum concentration of Topotecan can be increased when it is combined with Omeprazole. The metabolism of Donepezil can be decreased when combined with Omeprazole. The risk or severity of adverse effects can be increased when Lysergic Acid Diethylamide is combined with Omeprazole. The metabolism of Candesartan cilexetil can be decreased when combined with Omeprazole. The serum concentration of Omeprazole can be decreased when it is combined with Cyproterone acetate. The metabolism of Gavestinel can be decreased when combined with Omeprazole. The metabolism of Phenacetin can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Clemastine. The metabolism of Trimipramine can be decreased when combined with Omeprazole. The metabolism of Lornoxicam can be decreased when combined with Omeprazole. The serum concentration of Naloxegol can be increased when it is combined with Omeprazole. The metabolism of Valdecoxib can be decreased when combined with Omeprazole. The metabolism of Epoprostenol can be decreased when combined with Omeprazole. The serum concentration of Omeprazole can be increased when it is combined with Peginterferon alfa-2b. The metabolism of Bexarotene can be decreased when combined with Omeprazole. The serum concentration of Bosutinib can be decreased when it is combined with Omeprazole. The risk or severity of adverse effects can be increased when Nicergoline is combined with Omeprazole. The serum concentration of Omeprazole can be decreased when it is combined with Tocilizumab. The metabolism of Bromazepam can be decreased when combined with Omeprazole. The serum concentration of Omeprazole can be decreased when it is combined with Deferasirox. The metabolism of Mefenamic acid can be decreased when combined with Omeprazole. The metabolism of Amprenavir can be decreased when combined with Omeprazole. The metabolism of Seratrodast can be decreased when combined with Omeprazole. The metabolism of Quetiapine can be decreased when combined with Omeprazole. The metabolism of Lorcaserin can be decreased when combined with Omeprazole. The serum concentration of Mycophenolic acid can be decreased when it is combined with Omeprazole. The serum concentration of Saxagliptin can be decreased when it is combined with Omeprazole. The therapeutic efficacy of Omeprazole can be decreased when used in combination with Sarilumab. The metabolism of Salicylic acid can be decreased when combined with Omeprazole. The serum concentration of Omeprazole can be increased when it is combined with Ceritinib. The metabolism of Loratadine can be decreased when combined with Omeprazole. The serum concentration of Raltegravir can be increased when it is combined with Omeprazole. The metabolism of Temazepam can be decreased when combined with Omeprazole. The serum concentration of Afatinib can be increased when it is combined with Omeprazole. The serum concentration of Ranolazine can be increased when it is combined with Omeprazole. Omeprazole can cause an increase in the absorption of Methylphenidate resulting in an increased serum concentration and potentially a worsening of adverse effects. The serum concentration of Omeprazole can be increased when it is combined with Netupitant. The metabolism of Pitavastatin can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Fosamprenavir. The metabolism of Azelastine can be decreased when combined with Omeprazole. The serum concentration of Omeprazole can be increased when it is combined with Stiripentol. The metabolism of Rupatadine can be decreased when combined with Omeprazole. The metabolism of Zileuton can be decreased when combined with Omeprazole. The metabolism of Mirtazapine can be decreased when combined with Omeprazole. The serum concentration of Omeprazole can be increased when it is combined with Fosaprepitant. The metabolism of Hexobarbital can be decreased when combined with Omeprazole. The serum concentration of Omeprazole can be increased when it is combined with Palbociclib. The risk or severity of adverse effects can be increased when Cabergoline is combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Losartan. The metabolism of Ketobemidone can be decreased when combined with Omeprazole. The metabolism of Flurbiprofen can be decreased when combined with Omeprazole. The serum concentration of Phenindione can be increased when it is combined with Omeprazole. The metabolism of Esomeprazole can be decreased when combined with Omeprazole. The metabolism of Nortriptyline can be decreased when combined with Omeprazole. The metabolism of Flunarizine can be decreased when combined with Omeprazole. The serum concentration of Tacrolimus can be increased when it is combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Fluvoxamine. The serum concentration of Cilostazol can be increased when it is combined with Omeprazole. The metabolism of Suprofen can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Modafinil. The metabolism of Artemether can be decreased when combined with Omeprazole. The therapeutic efficacy of Ibandronate can be decreased when used in combination with Omeprazole. The serum concentration of Ethyl biscoumacetate can be increased when it is combined with Omeprazole. The metabolism of Thalidomide can be decreased when combined with Omeprazole. The serum concentration of Omeprazole can be decreased when it is combined with Siltuximab. The metabolism of Clotiazepam can be decreased when combined with Omeprazole. The metabolism of Lesinurad can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Ticagrelor. The metabolism of Omeprazole can be decreased when combined with Rucaparib. The metabolism of Doconexent can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be increased when combined with Pentobarbital. The serum concentration of Nintedanib can be increased when it is combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Pantoprazole. The serum concentration of Thioridazine can be increased when it is combined with Omeprazole. The metabolism of Carisoprodol can be decreased when combined with Omeprazole. The serum concentration of Dronabinol can be increased when it is combined with Omeprazole. The metabolism of Idarubicin can be decreased when combined with Omeprazole. The metabolism of Haloperidol can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be decreased when combined with Telaprevir. The metabolism of Axitinib can be decreased when combined with Omeprazole. The risk or severity of adverse effects can be increased when Pergolide is combined with Omeprazole. The metabolism of Piroxicam can be decreased when combined with Omeprazole. The metabolism of Methylphenobarbital can be decreased when combined with Omeprazole. Omeprazole can cause a decrease in the absorption of Iron resulting in a reduced serum concentration and potentially a decrease in efficacy. The metabolism of Omeprazole can be decreased when combined with Isoniazid. The metabolism of Glucosamine can be decreased when combined with Omeprazole. The metabolism of Ketamine can be decreased when combined with Omeprazole. The metabolism of Omeprazole can be increased when combined with Nevirapine.