The metabolism of Acetaminophen can be decreased when combined with Nicotine. The metabolism of Acetaminophen can be decreased when combined with Caffeine. The metabolism of Acetaminophen can be decreased when combined with Pioglitazone. The metabolism of Acetaminophen can be decreased when combined with Theophylline. The metabolism of Acetaminophen can be decreased when combined with Dosulepin. Acetaminophen may increase the hepatotoxic activities of Mipomersen. The metabolism of Acetaminophen can be decreased when combined with Isavuconazonium. The metabolism of Acetaminophen can be decreased when combined with Chlorpromazine. The serum concentration of Topotecan can be increased when it is combined with Acetaminophen. The serum concentration of Acetaminophen can be decreased when it is combined with Teriflunomide. The metabolism of Acetaminophen can be decreased when combined with Clotrimazole. The metabolism of Acetaminophen can be increased when combined with Methylphenobarbital. The metabolism of Acetaminophen can be decreased when combined with Sildenafil. The metabolism of Acetaminophen can be decreased when combined with Capecitabine. Acetaminophen may increase the anticoagulant activities of Ethyl biscoumacetate. The serum concentration of Bosutinib can be increased when it is combined with Acetaminophen. The risk or severity of adverse effects can be increased when Acetaminophen is combined with Atorvastatin. The metabolism of Acetaminophen can be increased when combined with Hexobarbital. The metabolism of Acetaminophen can be decreased when combined with Bupropion. The metabolism of Acetaminophen can be decreased when combined with Irbesartan. The metabolism of Acetaminophen can be decreased when combined with Felodipine. The serum concentration of Acetaminophen can be decreased when it is combined with Mitotane. The risk or severity of adverse effects can be increased when Lisuride is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Lapatinib. The serum concentration of Acetaminophen can be increased when it is combined with Ceritinib. The metabolism of Acetaminophen can be decreased when combined with Lidocaine. The metabolism of Acetaminophen can be decreased when combined with Dronedarone. The serum concentration of Acetaminophen can be increased when it is combined with Fusidic Acid. The metabolism of Acetaminophen can be decreased when combined with Fluvoxamine. The metabolism of Acetaminophen can be decreased when combined with Tranylcypromine. Acetaminophen may increase the anticoagulant activities of Acenocoumarol. The metabolism of Acetaminophen can be increased when combined with Phenobarbital. The serum concentration of Acetaminophen can be increased when it is combined with Mifepristone. The metabolism of Acetaminophen can be decreased when combined with Eliglustat. The metabolism of Acetaminophen can be decreased when combined with Sulfadiazine. The metabolism of Acetaminophen can be decreased when combined with Celecoxib. The metabolism of Acetaminophen can be decreased when combined with Imipramine. The serum concentration of Ubidecarenone can be increased when it is combined with Acetaminophen. 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 Paroxetine. The metabolism of Acetaminophen can be decreased when combined with Gemfibrozil. The serum concentration of Rosuvastatin can be increased when it is combined with Acetaminophen. The risk or severity of adverse effects can be increased when Ergotamine is combined with Acetaminophen. The serum concentration of Cerivastatin can be increased when it is combined with Acetaminophen. The risk or severity of adverse effects can be increased when Methylergometrine is combined with Acetaminophen. Acetaminophen may increase the anticoagulant activities of Fluindione. The metabolism of Acetaminophen can be decreased when combined with Dihydroergotamine. The metabolism of Acetaminophen can be decreased when combined with Clozapine. The metabolism of Acetaminophen can be decreased when combined with Tenofovir disoproxil. The metabolism of Acetaminophen can be decreased when combined with Efavirenz. The metabolism of Acetaminophen can be decreased when combined with Azithromycin. The serum concentration of Ibrutinib can be increased when it is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Mirabegron. The metabolism of Acetaminophen can be decreased when combined with Pyrimethamine. The metabolism of Acetaminophen can be decreased when combined with Clarithromycin. The metabolism of Acetaminophen can be decreased when combined with Quinidine. The metabolism of Acetaminophen can be decreased when combined with Doxycycline. The risk or severity of adverse effects can be increased when Ergonovine is combined with Acetaminophen. The metabolism of Acetaminophen can be increased when combined with Pentobarbital. The metabolism of Acetaminophen can be decreased when combined with Amiodarone. The metabolism of Acetaminophen can be decreased when combined with Olaparib. The serum concentration of Acetaminophen can be increased when it is combined with Ivacaftor. The metabolism of Acetaminophen can be decreased when combined with Zafirlukast. The metabolism of Acetaminophen can be decreased when combined with Duloxetine. The metabolism of Acetaminophen can be decreased when combined with Erythromycin. The metabolism of Acetaminophen can be decreased when combined with Diphenhydramine. The metabolism of Acetaminophen can be decreased when combined with Sulfisoxazole. The serum concentration of Acetaminophen can be decreased when it is combined with Enzalutamide. 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 Delavirdine. The metabolism of Acetaminophen can be decreased when combined with Ritonavir. The risk or severity of adverse effects can be increased when Pergolide is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Trimethoprim. The serum concentration of Simvastatin can be increased when it 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 Idelalisib. The risk or severity of adverse effects can be increased when Metergoline is combined with Acetaminophen. The metabolism of Acetaminophen can be increased when combined with Nevirapine. The serum concentration of Vincristine can be increased when it is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Telithromycin. The serum concentration of Acetaminophen can be increased when it is combined with Darunavir. The metabolism of Acetaminophen can be decreased when combined with Saquinavir. The metabolism of Acetaminophen can be decreased when combined with Lovastatin. The metabolism of Acetaminophen can be decreased when combined with Crisaborole. The metabolism of Acetaminophen can be decreased when combined with Verapamil. The serum concentration of Pravastatin can be increased when it is combined with Acetaminophen. The serum concentration of Afatinib can be increased when it is combined with Acetaminophen. The risk or severity of adverse effects can be increased when Lysergic Acid Diethylamide is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Ropinirole. The serum concentration of Acetaminophen can be decreased when it is combined with St. John's Wort. Ethanol may increase the hepatotoxic activities of Acetaminophen. The serum concentration of Acetaminophen can be decreased when it is combined with Tocilizumab. The metabolism of Acetaminophen can be increased when combined with Rifabutin. The serum concentration of Acetaminophen can be increased when it is combined with Luliconazole. The serum concentration of Acetaminophen can be increased when it is combined with Panobinostat. The metabolism of Acetaminophen can be decreased when combined with Lumefantrine. The metabolism of Acetaminophen can be increased when combined with Secobarbital. The metabolism of Acetaminophen can be decreased when combined with Telaprevir. The metabolism of Acetaminophen can be decreased when combined with Promazine. The metabolism of Acetaminophen can be increased when combined with Rifampicin. The metabolism of Acetaminophen can be decreased when combined with Nelfinavir. The serum concentration of Rifaximin can be increased when it is combined with Acetaminophen. The serum concentration of Acetaminophen can be increased when it is combined with Cobicistat. The metabolism of Acetaminophen can be decreased when combined with Chloroquine. The metabolism of Acetaminophen can be decreased when combined with Manidipine. The metabolism of Acetaminophen can be decreased when combined with Ticlopidine. The therapeutic efficacy of Acetaminophen can be decreased when used in combination with Sarilumab. The metabolism of Acetaminophen can be decreased when combined with Ketoconazole. The metabolism of Acetaminophen can be decreased when combined with Haloperidol. The metabolism of Acetaminophen can be decreased when combined with Itraconazole. The metabolism of Acetaminophen can be decreased when combined with Valsartan. The metabolism of Acetaminophen can be decreased when combined with Tolbutamide. The metabolism of Acetaminophen can be decreased when combined with Rabeprazole. The serum concentration of Saxagliptin can be decreased when it is combined with Acetaminophen. The serum concentration of the active metabolites of Dabigatran etexilate can be increased when Dabigatran etexilate is used in combination with Acetaminophen. The risk or severity of adverse effects can be increased when Acetaminophen is combined with Sodium Nitrite. 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 Boceprevir. The serum concentration of Pitavastatin can be increased when it is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Bortezomib. The metabolism of Acetaminophen can be decreased when combined with Atazanavir. The metabolism of Acetaminophen can be decreased when combined with Rolapitant. The metabolism of Acetaminophen can be decreased when combined with Venlafaxine. The serum concentration of Tolvaptan can be increased when it is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Indinavir. The serum concentration of Acetaminophen can be increased when it is combined with Simeprevir. The serum concentration of Phenylephrine can be increased when it is combined with Acetaminophen. The metabolism of Acetaminophen can be decreased when combined with Metoprolol. The metabolism of Acetaminophen can be decreased when combined with Citalopram. The metabolism of Acetaminophen can be decreased when combined with Clemastine.