The metabolism of Acetaminophen can be increased when combined with Amobarbital. The metabolism of Acetaminophen can be decreased when combined with Voriconazole. Acetaminophen may increase the anticoagulant activities of Dicoumarol. The serum concentration of Simvastatin can be increased when it is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Quinidine. The metabolism of Acetaminophen can be decreased when combined with Haloperidol. The serum concentration of Acetaminophen can be increased when it is combined with Panobinostat. The metabolism of Acetaminophen can be decreased when combined with Sertraline. The metabolism of Acetaminophen can be decreased when combined with Manidipine. The serum concentration of Acetaminophen can be decreased when it is combined with Teriflunomide. The metabolism of Acetaminophen can be increased when combined with Rifampicin. The metabolism of Acetaminophen can be decreased when combined with Dosulepin. The metabolism of Acetaminophen can be decreased when combined with Boceprevir. The risk or severity of adverse effects can be increased when Bromocriptine is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Felodipine. The metabolism of Acetaminophen can be decreased when combined with Tolbutamide. The metabolism of Acetaminophen can be decreased when combined with Promazine. The metabolism of Acetaminophen can be decreased when combined with Atazanavir. The serum concentration of Brentuximab vedotin can be increased when it is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Bupropion. The serum concentration of Acetaminophen can be increased when it is combined with Vemurafenib. The metabolism of Acetaminophen can be decreased when combined with Erythromycin. The metabolism of Acetaminophen can be decreased when combined with Citalopram. The metabolism of Acetaminophen can be decreased when combined with Topiroxostat. The serum concentration of Acetaminophen can be increased when it is combined with Netupitant. The metabolism of Acetaminophen can be decreased when combined with Clomipramine. The serum concentration of Acetaminophen can be increased when it is combined with Simeprevir. The metabolism of Acetaminophen can be decreased when combined with Fluorouracil. The metabolism of Acetaminophen can be decreased when combined with Sulfamethoxazole. The risk or severity of adverse effects can be increased when Pergolide is combined with Acetaminophen. The serum concentration of Acetaminophen can be decreased when it is combined with Enzalutamide. The serum concentration of Acetaminophen can be decreased when it is combined with Fosphenytoin. The metabolism of Acetaminophen can be decreased when combined with Pyrimethamine. The serum concentration of Ledipasvir can be increased when it is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Delavirdine. Cholestyramine can cause a decrease in the absorption of Acetaminophen resulting in a reduced serum concentration and potentially a decrease in efficacy. The metabolism of Acetaminophen can be decreased when combined with Itraconazole. The serum concentration of Pazopanib can be increased when it is combined with Acetaminophen. The serum concentration of Prucalopride can be increased when it is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Venlafaxine. The serum concentration of Ranolazine can be increased when it is combined with Acetaminophen. Ethanol may increase the hepatotoxic activities of Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Trimethoprim. The serum concentration of Phenylephrine can be increased when it is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Cinacalcet. The metabolism of Acetaminophen can be decreased when combined with Capecitabine. The serum concentration of Acetaminophen can be increased when it is combined with Ceritinib. Acetaminophen may increase the anticoagulant activities of Warfarin. The metabolism of Acetaminophen can be decreased when combined with Diphenhydramine. The serum concentration of Acetaminophen can be increased when it is combined with Ivacaftor. The metabolism of Acetaminophen can be decreased when combined with Lovastatin. Acetaminophen may increase the hepatotoxic activities of Sorafenib. The serum concentration of Edoxaban can be increased when it is combined with Acetaminophen. The serum concentration of Acetaminophen can be increased when it is combined with Mifepristone. Acetaminophen may increase the hepatotoxic activities of Imatinib. The metabolism of Acetaminophen can be decreased when combined with Etravirine. The metabolism of Acetaminophen can be decreased when combined with Indinavir. The metabolism of Acetaminophen can be decreased when combined with Ticagrelor. The metabolism of Acetaminophen can be decreased when combined with Lobeglitazone. The serum concentration of Doxorubicin can be increased when it is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Clotrimazole. The risk or severity of adverse effects can be increased when Dapsone is combined with Acetaminophen. The metabolism of Acetaminophen can be increased when combined with Methylphenobarbital. The serum concentration of Acetaminophen can be decreased when it is combined with Bosentan. The serum concentration of Aripiprazole can be decreased when it is combined with Acetaminophen. The serum concentration of Acetaminophen can be increased when it is combined with Darunavir. The serum concentration of Busulfan can be increased when it is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Chlorpromazine. The metabolism of Acetaminophen can be decreased when combined with Efavirenz. The metabolism of Acetaminophen can be decreased when combined with Mirabegron. The serum concentration of Bosutinib can be increased when it is combined with Acetaminophen. The serum concentration of Acetaminophen can be decreased when it is combined with Mitotane. The metabolism of Acetaminophen can be decreased when combined with Fluvoxamine. The risk or severity of adverse effects can be increased when Nicergoline is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Fluconazole. The metabolism of Acetaminophen can be decreased when combined with Nelfinavir. The metabolism of Acetaminophen can be decreased when combined with Midostaurin. The serum concentration of Acetaminophen can be increased when it is combined with Cobicistat. The metabolism of Acetaminophen can be decreased when combined with Isavuconazonium. The serum concentration of Pitavastatin can be increased when it is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Chloroquine. The serum concentration of Saxagliptin can be decreased when it is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Cyclosporine. The metabolism of Acetaminophen can be decreased when combined with Saquinavir. The metabolism of Acetaminophen can be decreased when combined with Theophylline. The metabolism of Acetaminophen can be decreased when combined with Cholecalciferol. The therapeutic efficacy of Acetaminophen can be decreased when used in combination with Sarilumab. The metabolism of Acetaminophen can be decreased when combined with Leflunomide. The risk or severity of adverse effects can be increased when Metergoline is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Fluvastatin. The metabolism of Acetaminophen can be decreased when combined with Desipramine. The metabolism of Acetaminophen can be decreased when combined with Zucapsaicin. The metabolism of Acetaminophen can be decreased when combined with Clemastine. The serum concentration of Vincristine can be increased when it is combined with Acetaminophen. The metabolism of Acetaminophen can be increased when combined with Nevirapine. The risk or severity of adverse effects can be increased when Methysergide is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Verapamil. The serum concentration of Naloxegol can be increased when it is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Sulfadiazine. The risk or severity of adverse effects can be increased when Ergonovine is combined with Acetaminophen. The serum concentration of Acetaminophen can be decreased when it is combined with Cyproterone acetate. The metabolism of Acetaminophen can be decreased when combined with Gemfibrozil. The metabolism of Acetaminophen can be decreased when combined with Tenofovir disoproxil. Acetaminophen may increase the anticoagulant activities of Acenocoumarol. The serum concentration of Acetaminophen can be increased when it is combined with Lumacaftor. The metabolism of Acetaminophen can be decreased when combined with Fosamprenavir. Acetaminophen may increase the anticoagulant activities of Fluindione. The metabolism of Acetaminophen can be decreased when combined with Ticlopidine. The metabolism of Acetaminophen can be decreased when combined with Lorcaserin. The metabolism of Acetaminophen can be decreased when combined with Tipranavir. The metabolism of Acetaminophen can be decreased when combined with Thioridazine. The metabolism of Acetaminophen can be decreased when combined with Artemether. The metabolism of Acetaminophen can be decreased when combined with Rolapitant. The serum concentration of Acetaminophen can be decreased when it is combined with Tocilizumab. The serum concentration of Acetaminophen can be decreased when it is combined with Peginterferon alfa-2b. The metabolism of Acetaminophen can be increased when combined with Thiamylal. The metabolism of Acetaminophen can be decreased when combined with Telaprevir. The metabolism of Acetaminophen can be decreased when combined with Nilotinib. The metabolism of Acetaminophen can be increased when combined with Rifabutin. The metabolism of Acetaminophen can be decreased when combined with Rabeprazole. The serum concentration of Everolimus can be increased when it is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Lopinavir. The metabolism of Acetaminophen can be decreased when combined with Nefazodone. The risk or severity of adverse effects can be increased when Methylergometrine is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Dihydroergotamine. The metabolism of Acetaminophen can be decreased when combined with Betaxolol. The risk or severity of adverse effects can be increased when Cabergoline is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Imipramine. The serum concentration of Acetaminophen can be decreased when it is combined with St. John's Wort. The risk or severity of adverse effects can be increased when Acetaminophen is combined with Sodium Nitrite.