The risk or severity of adverse effects can be increased when Metergoline is combined with Simvastatin. The risk or severity of adverse effects can be increased when Ravuconazole is combined with Simvastatin. The serum concentration of Simvastatin can be increased when it is combined with Alpha-1-proteinase inhibitor. The metabolism of Simvastatin can be decreased when combined with Clozapine. The serum concentration of Simvastatin can be increased when it is combined with Oxymetholone. Raltegravir may increase the myopathic rhabdomyolysis activities of Simvastatin. The risk or severity of adverse effects can be increased when Albaconazole is combined with Simvastatin. The serum concentration of Simvastatin can be increased when it is combined with Ivacaftor. The serum concentration of Simvastatin can be increased when it is combined with Cobicistat. The serum concentration of Simvastatin can be increased when it is combined with Ixazomib. The serum concentration of Simvastatin can be increased when it is combined with Glyburide. The serum concentration of Simvastatin can be increased when it is combined with Trandolapril. The metabolism of Simvastatin can be decreased when combined with Atomoxetine. The serum concentration of Simvastatin can be increased when it is combined with Enalaprilat. The serum concentration of Simvastatin can be increased when it is combined with Midazolam. The serum concentration of Cerivastatin can be increased when it is combined with Simvastatin. The risk or severity of adverse effects can be increased when Isavuconazole is combined with Simvastatin. The serum concentration of Simvastatin can be increased when it is combined with Elbasvir. The serum concentration of Simvastatin can be increased when it is combined with Elafin. The serum concentration of Simvastatin can be increased when it is combined with Clofazimine. The serum concentration of Simvastatin can be increased when it is combined with Ergonovine. The metabolism of Simvastatin can be increased when combined with Secobarbital. The serum concentration of Simvastatin can be increased when it is combined with Methazolamide. The serum concentration of Simvastatin can be increased when it is combined with Chlorzoxazone. The serum concentration of Simvastatin can be increased when it is combined with Quinapril. The serum concentration of Simvastatin can be increased when it is combined with Prinomastat. The serum concentration of Simvastatin can be increased when it is combined with Fentanyl. The risk or severity of adverse effects can be increased when Perhexiline is combined with Simvastatin. The serum concentration of Nintedanib can be increased when it is combined with Simvastatin. The serum concentration of Simvastatin can be increased when it is combined with Vildagliptin. The serum concentration of Simvastatin can be increased when it is combined with Ranitidine. The serum concentration of Simvastatin can be increased when it is combined with Testosterone. The serum concentration of Simvastatin can be decreased when it is combined with Mitotane. The serum concentration of Simvastatin can be increased when it is combined with Ifosfamide. The serum concentration of Simvastatin can be increased when it is combined with Darexaban. The serum concentration of Simvastatin can be increased when it is combined with Fluticasone propionate. The serum concentration of Simvastatin can be increased when it is combined with Z-Val-Ala-Asp fluoromethyl ketone. The serum concentration of Simvastatin can be increased when it is combined with Levofloxacin. The risk or severity of adverse effects can be increased when Nimesulide is combined with Simvastatin. The serum concentration of Simvastatin can be increased when it is combined with Cabergoline. The serum concentration of Simvastatin can be increased when it is combined with Azelastine. The serum concentration of Simvastatin can be increased when it is combined with Methimazole. The serum concentration of Simvastatin can be increased when it is combined with Buprenorphine. The risk or severity of adverse effects can be increased when Butoconazole is combined with Simvastatin. The serum concentration of Simvastatin can be decreased when it is combined with Deferasirox. The risk or severity of adverse effects can be increased when Efinaconazole is combined with Simvastatin. The serum concentration of Simvastatin can be increased when it is combined with Etoricoxib. The metabolism of Simvastatin can be decreased when combined with Sertraline. The serum concentration of Simvastatin can be increased when it is combined with Salbutamol. The serum concentration of Simvastatin can be increased when it is combined with Quinine. Simvastatin may increase the anticoagulant activities of Ethyl biscoumacetate. The serum concentration of Simvastatin can be increased when it is combined with Paclitaxel. The risk or severity of adverse effects can be increased when Oxiconazole is combined with Simvastatin. The serum concentration of Simvastatin can be increased when it is combined with Erythromycin. The serum concentration of Simvastatin can be increased when it is combined with Lansoprazole. The metabolism of Simvastatin can be decreased when combined with Lumefantrine. The risk or severity of adverse effects can be increased when Naftopidil is combined with Simvastatin. The metabolism of Simvastatin can be decreased when combined with Crizotinib. The risk or severity of adverse effects can be increased when Gabapentin is combined with Simvastatin. The serum concentration of Simvastatin can be decreased when it is combined with Siltuximab. The risk or severity of adverse effects can be increased when Fidaxomicin is combined with Simvastatin. The serum concentration of Simvastatin can be increased when it is combined with Asunaprevir. The metabolism of Simvastatin can be decreased when combined with Clemastine. The serum concentration of Conivaptan can be increased when it is combined with Simvastatin. The risk or severity of adverse effects can be increased when Darodipine is combined with Simvastatin. The serum concentration of Simvastatin can be increased when it is combined with Ethanol. The serum concentration of Bosutinib can be increased when it is combined with Simvastatin. The serum concentration of Simvastatin can be increased when it is combined with Vinblastine. The metabolism of Simvastatin can be decreased when combined with Dihydroergotamine. The serum concentration of Simvastatin can be increased when it is combined with Alogliptin. The metabolism of Simvastatin can be decreased when combined with Lorcaserin. The metabolism of Simvastatin can be increased when combined with Rifampicin. The serum concentration of Simvastatin can be decreased when it is combined with Bismuth Subcitrate. The serum concentration of Simvastatin can be increased when it is combined with 4-(2-Aminoethyl)Benzenesulfonyl Fluoride. The serum concentration of Simvastatin can be increased when it is combined with Lepirudin. The serum concentration of Simvastatin can be increased when it is combined with Aldesleukin. The risk or severity of adverse effects can be increased when Methysergide is combined with Simvastatin. The metabolism of Simvastatin can be decreased when combined with Citalopram. The metabolism of Simvastatin can be increased when combined with St. John's Wort. The risk or severity of adverse effects can be increased when Nicergoline is combined with Simvastatin. The serum concentration of Simvastatin can be decreased when it is combined with Sodium bicarbonate. The serum concentration of Simvastatin can be decreased when it is combined with Dabrafenib. The serum concentration of Simvastatin can be increased when it is combined with Prednisone. The serum concentration of Simvastatin can be increased when it is combined with Pergolide. The serum concentration of Simvastatin can be increased when it is combined with Norfloxacin. The serum concentration of Simvastatin can be increased when it is combined with Ergotamine. The serum concentration of Simvastatin can be increased when it is combined with Racecadotril. The metabolism of Simvastatin can be decreased when combined with Ticlopidine. The metabolism of Simvastatin can be decreased when combined with Isradipine. The serum concentration of Simvastatin can be decreased when it is combined with Etravirine. The metabolism of Simvastatin can be increased when combined with Primidone. The serum concentration of Simvastatin can be increased when it is combined with Tetracycline. Gemfibrozil may increase the myopathic rhabdomyolysis activities of Simvastatin. The risk or severity of adverse effects can be increased when Benidipine is combined with Simvastatin. The metabolism of Simvastatin can be decreased when combined with Betaxolol. The risk or severity of adverse effects can be increased when Barnidipine is combined with Simvastatin. The serum concentration of Simvastatin can be increased when it is combined with Tesmilifene. The serum concentration of Simvastatin can be increased when it is combined with Captopril. The serum concentration of Simvastatin can be increased when it is combined with Spirapril. The serum concentration of Pravastatin can be increased when it is combined with Simvastatin. The serum concentration of Simvastatin can be increased when it is combined with Ticagrelor. The serum concentration of Cilostazol can be increased when it is combined with Simvastatin. The serum concentration of Simvastatin can be increased when it is combined with Nelfinavir. The serum concentration of Simvastatin can be increased when it is combined with Tipranavir. The serum concentration of Simvastatin can be increased when it is combined with Ciprofloxacin. The serum concentration of Simvastatin can be increased when it is combined with Nilvadipine. The metabolism of Simvastatin can be decreased when combined with Manidipine. The serum concentration of Simvastatin can be increased when it is combined with Chymostatin. The serum concentration of Simvastatin can be decreased when it is combined with Enzalutamide. The serum concentration of Simvastatin can be increased when it is combined with Etoposide. The serum concentration of Simvastatin can be increased when it is combined with N-(3-Propylcarbamoyloxirane-2-Carbonyl)-Isoleucyl-Proline. The serum concentration of Simvastatin can be increased when it is combined with Teriflunomide. The risk or severity of adverse effects can be increased when Lysergic Acid Diethylamide is combined with Simvastatin. The metabolism of Simvastatin can be decreased when combined with Lovastatin. The metabolism of Simvastatin can be increased when combined with Bosentan. The serum concentration of Simvastatin can be increased when it is combined with Itraconazole. The serum concentration of Simvastatin can be increased when it is combined with Loratadine. The serum concentration of Simvastatin can be increased when it is combined with Ceritinib. The metabolism of Simvastatin can be decreased when combined with Ziprasidone. The metabolism of Simvastatin can be decreased when combined with Pioglitazone. The serum concentration of Simvastatin can be increased when it is combined with Betamethasone. The serum concentration of Metoprolol can be increased when it is combined with Simvastatin. The metabolism of Simvastatin can be decreased when combined with Felodipine. The metabolism of Simvastatin can be decreased when combined with Darifenacin. The serum concentration of Simvastatin can be decreased when it is combined with Phenytoin. The metabolism of Simvastatin can be decreased when combined with Bupropion. The metabolism of Simvastatin can be decreased when combined with Cimetidine. The metabolism of Simvastatin can be decreased when combined with Crisaborole. The serum concentration of Simvastatin can be increased when it is combined with Clotiazepam. The serum concentration of Simvastatin can be increased when it is combined with Ketoconazole.