The risk or severity of adverse effects can be increased when Valproic Acid is combined with Pipamperone. The serum concentration of Valproic Acid can be decreased when it is combined with Chymostatin. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Indalpine. The serum concentration of Carvedilol can be increased when it is combined with Valproic Acid. The serum concentration of Valproic Acid can be decreased when it is combined with Atazanavir. The risk or severity of adverse effects can be increased when Ziprasidone is combined with Valproic Acid. The metabolism of Valproic Acid can be decreased when combined with Isoniazid. The serum concentration of Bosentan can be increased when it is combined with Valproic Acid. The metabolism of Valproic Acid can be decreased when combined with Fluoxetine. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Cyproheptadine. The metabolism of Dicoumarol can be decreased when combined with Valproic Acid. The metabolism of Pravastatin can be decreased when combined with Valproic Acid. The serum concentration of Ibrutinib can be increased when it is combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Desloratadine. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Sepranolone. The risk or severity of adverse effects can be increased when Diphenoxylate is combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Sulpiride. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Heroin. The metabolism of Donepezil can be decreased when combined with Valproic Acid. The metabolism of Piroxicam can be decreased when combined with Valproic Acid. The metabolism of Caffeine can be decreased when combined with Valproic Acid. The serum concentration of Valproic Acid can be decreased when it is combined with Captopril. The serum concentration of Valproic Acid can be decreased when it is combined with N-(3-Propylcarbamoyloxirane-2-Carbonyl)-Isoleucyl-Proline. The metabolism of Warfarin can be decreased when combined with Valproic Acid. The metabolism of Ketoprofen can be decreased when combined with Valproic Acid. The metabolism of Valproic Acid can be decreased when combined with Sulfisoxazole. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Osanetant. Valproic Acid may increase the central nervous system depressant (CNS depressant) activities of Azelastine. The metabolism of Arachidonic Acid can be decreased when combined with Valproic Acid. The metabolism of Valproic Acid can be decreased when combined with Paroxetine. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Fencamfamine. The metabolism of Valproic Acid can be decreased when combined with Citalopram. The serum concentration of Valproic Acid can be decreased when it is combined with Boceprevir. The risk or severity of adverse effects can be increased when Butorphanol is combined with Valproic Acid. The metabolism of Candesartan cilexetil can be decreased when combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Perospirone. The metabolism of Valproic Acid can be decreased when combined with Clotrimazole. The metabolism of Lumiracoxib can be decreased when combined with Valproic Acid. The therapeutic efficacy of Valproic Acid can be decreased when used in combination with Pregabalin. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Benzyl alcohol. The serum concentration of Valproic Acid can be decreased when it is combined with Ecabet. The metabolism of Sulfamoxole can be decreased when combined with Valproic Acid. The risk or severity of adverse effects can be increased when Dihydrocodeine is combined with Valproic Acid. The metabolism of Phenprocoumon can be decreased when combined with Valproic Acid. The metabolism of Cabozantinib can be decreased when combined with Valproic Acid. The metabolism of Epoprostenol can be decreased when combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Olopatadine. The metabolism of Valproic Acid can be decreased when combined with Floxuridine. Droperidol may increase the central nervous system depressant (CNS depressant) activities of Valproic Acid. The metabolism of Tolterodine can be decreased when combined with Valproic Acid. The metabolism of Prasugrel can be decreased when combined with Valproic Acid. Brimonidine may increase the central nervous system depressant (CNS depressant) activities of Valproic Acid. The metabolism of Valproic Acid can be increased when combined with Aprepitant. The serum concentration of Phenytoin can be decreased when it is combined with Valproic Acid. The metabolism of Dapagliflozin can be decreased when combined with Valproic Acid. The serum concentration of Valproic Acid can be decreased when it is combined with Ulinastatin. The metabolism of Zalcitabine can be decreased when combined with Valproic Acid. The metabolism of Valproic Acid can be decreased when combined with Voriconazole. The serum concentration of Valproic Acid can be increased when it is combined with Guanfacine. The metabolism of Eletriptan can be decreased when combined with Valproic Acid. The metabolism of Valproic Acid can be decreased when combined with Zucapsaicin. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Cocaine. The risk or severity of adverse effects can be increased when Estazolam is combined with Valproic Acid. The serum concentration of Valproic Acid can be increased when it is combined with Mifepristone. The risk or severity of adverse effects can be increased when Metergoline is combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Triflupromazine. The serum concentration of Valproic Acid can be decreased when it is combined with Batimastat. The serum concentration of Valproic Acid can be decreased when it is combined with Rifampicin. The serum concentration of Trimipramine can be increased when it is combined with Valproic Acid. The metabolism of Dapsone can be decreased when combined with Valproic Acid. The metabolism of Montelukast can be decreased when combined with Valproic Acid. The metabolism of Valproic Acid can be decreased when combined with Fluvastatin. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Lormetazepam. The serum concentration of Valproic Acid can be decreased when it is combined with Isoflurophate. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Fospropofol. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Dexbrompheniramine. The metabolism of Arformoterol can be decreased when combined with Valproic Acid. The serum concentration of Valproic Acid can be decreased when it is combined with 1,10-Phenanthroline. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Methapyrilene. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Levocabastine. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Levodopa. The serum concentration of Simvastatin can be increased when it is combined with Valproic Acid. The serum concentration of Tianeptine can be increased when it is combined with Valproic Acid. The metabolism of Aminophenazone can be decreased when combined with Valproic Acid. The metabolism of Valproic Acid can be decreased when combined with Armodafinil. The metabolism of Gliclazide can be decreased when combined with Valproic Acid. The metabolism of Sitaxentan can be decreased when combined with Valproic Acid. The serum concentration of Cerivastatin can be increased when it is combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Lithium. The risk or severity of adverse effects can be increased when Dihydroergotamine is combined with Valproic Acid. The serum concentration of Valproic Acid can be increased when it is combined with Methyl salicylate. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Ethylmorphine. The metabolism of Aceclofenac can be decreased when combined with Valproic Acid. The risk or severity of adverse effects can be increased when Alprazolam is combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Butamben. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Ritanserin. The serum concentration of Valproic Acid can be decreased when it is combined with Moexipril. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Pomalidomide. The risk or severity of adverse effects can be increased when Ropivacaine is combined with Valproic Acid. The therapeutic efficacy of Glycerol Phenylbutyrate can be decreased when used in combination with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Chlorzoxazone. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Benperidol. The metabolism of Licofelone can be decreased when combined with Valproic Acid. The metabolism of Estrone can be decreased when combined with Valproic Acid. The risk or severity of adverse effects can be increased when Flupentixol is combined with Valproic Acid. The serum concentration of Ubidecarenone can be increased when it is combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Efavirenz. The risk or severity of adverse effects can be increased when Pergolide is combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Gepirone. The metabolism of Valproic Acid can be increased when combined with Nevirapine. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Oxethazaine. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Ethyl loflazepate. The risk or severity of adverse effects can be increased when Cabergoline is combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Tetracaine. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Procaine. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Deramciclane. The metabolism of Doconexent can be decreased when combined with Valproic Acid. The risk or severity of adverse effects can be increased when Hydromorphone is combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Baclofen. The risk or severity of adverse effects can be increased when Zuclopenthixol is combined with Valproic Acid. The serum concentration of Valproic Acid can be increased when it is combined with Aloxiprin. The metabolism of Valproic Acid can be decreased when combined with Ketoconazole. The therapeutic efficacy of Benzoic Acid can be decreased when used in combination with Valproic Acid. The risk or severity of adverse effects can be increased when Loxapine is combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Duloxetine. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Alphacetylmethadol. The metabolism of Ibuprofen can be decreased when combined with Valproic Acid. The serum concentration of Valproic Acid can be decreased when it is combined with Sitagliptin. The serum concentration of Valproic Acid can be increased when it is combined with Salicylic acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Ethyl carbamate.