The serum concentration of Cilostazol can be increased when it is combined with Valproic Acid. The serum concentration of Valproic Acid can be decreased when it is combined with Moexipril. The metabolism of Phenprocoumon can be decreased when combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Atorvastatin. The metabolism of Netupitant can be decreased when combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Chloroprocaine. The risk or severity of adverse effects can be increased when Ergotamine is combined with Valproic Acid. The serum concentration of Valproic Acid can be increased when it is combined with Acetylsalicylic acid. The metabolism of Valproic Acid can be decreased when combined with Quinine. The metabolism of Testosterone can be decreased when combined with Valproic Acid. The risk or severity of adverse effects can be increased when Gamma Hydroxybutyric Acid is combined with Valproic Acid. The serum concentration of Cerivastatin can be increased when it is combined with Valproic Acid. The serum concentration of Valproic Acid can be decreased when it is combined with Darunavir. The serum concentration of Amineptine can be increased when it is combined with Valproic Acid. The therapeutic efficacy of Glycerol Phenylbutyrate can be decreased when used in combination with Valproic Acid. The serum concentration of Zidovudine can be increased when it is combined with Valproic Acid. The serum concentration of Valproic Acid can be decreased when it is combined with Nafamostat. The serum concentration of Valproic Acid can be decreased when it is combined with Ethosuximide. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Dihydromorphine. The risk or severity of adverse effects can be increased when Lidocaine is combined with Valproic Acid. The risk or severity of adverse effects can be increased when Methylergometrine is combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Levetiracetam. The risk or severity of adverse effects can be increased when Remifentanil is combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Perospirone. The metabolism of Valdecoxib can be decreased when combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Tizanidine. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Difenoxin. The serum concentration of Sodium oxybate can be increased when it is combined with Valproic Acid. The metabolism of Phenylbutazone can be decreased when combined with Valproic Acid. The metabolism of Sulfamoxole can be decreased when combined with Valproic Acid. The risk or severity of adverse effects can be increased when Prochlorperazine is combined with Valproic Acid. The serum concentration of Valproic Acid can be decreased when it is combined with Cholesterol. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Benperidol. The serum concentration of Barbital can be increased when it is combined with Valproic Acid. The metabolism of Valproic Acid can be decreased when combined with Gemfibrozil. The serum concentration of Valproic Acid can be decreased when it is combined with Lepirudin. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Desloratadine. The metabolism of Torasemide can be decreased when combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with 7-Nitroindazole. The metabolism of Valproic Acid can be decreased when combined with Valsartan. The risk or severity of adverse effects can be increased when Desflurane is combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Dexbrompheniramine. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Indalpine. The serum concentration of Valproic Acid can be decreased when it is combined with Doripenem. The serum concentration of Fosphenytoin can be decreased when it is combined with Valproic Acid. Valproic Acid may increase the thrombocytopenic activities of Vorinostat. The serum concentration of Valproic Acid can be decreased when it is combined with Ramipril. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Efavirenz. The serum concentration of Valproic Acid can be decreased when it is combined with Gabexate. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Perazine. The serum concentration of Valproic Acid can be increased when it is combined with Balsalazide. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Dyclonine. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Normethadone. The metabolism of Valproic Acid can be decreased when combined with Fluvoxamine. The metabolism of Celecoxib can be decreased when combined with Valproic Acid. The metabolism of Olodaterol can be decreased when combined with Valproic Acid. The metabolism of Seratrodast can be decreased when combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Fencamfamine. The serum concentration of Valproic Acid can be increased when it is combined with Mifepristone. The metabolism of Valproic Acid can be decreased when combined with Manidipine. The risk or severity of adverse effects can be increased when Trifluoperazine is combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Oxybuprocaine. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Articaine. The risk or severity of adverse effects can be increased when Levorphanol is combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Meclizine. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Canertinib. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Chlorphenamine. The metabolism of Valproic Acid can be decreased when combined with Midostaurin. The risk or severity of adverse effects can be increased when Fentanyl is combined with Valproic Acid. 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 Tetrahydropalmatine. The serum concentration of Valproic Acid can be decreased when it is combined with Simeprevir. The serum concentration of Valproic Acid can be decreased when it is combined with Enalapril. The risk or severity of adverse effects can be increased when Midazolam is combined with Valproic Acid. 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 decreased when it is combined with Imidapril. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Glutethimide. The metabolism of Valproic Acid can be decreased when combined with Esomeprazole. The metabolism of Valproic Acid can be decreased when combined with Sildenafil. The serum concentration of Valproic Acid can be decreased when it is combined with Ixazomib. The serum concentration of Methylphenobarbital can be increased when it is combined with Valproic Acid. The serum concentration of Valproic Acid can be decreased when it is combined with Asunaprevir. The metabolism of Nateglinide can be decreased when combined with Valproic Acid. The metabolism of Glyburide can be decreased when combined with Valproic Acid. The serum concentration of Secobarbital can be increased when it is combined with Valproic Acid. The serum concentration of Valproic Acid can be decreased when it is combined with Apixaban. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Agomelatine. The metabolism of Zileuton can be decreased when combined with Valproic Acid. 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 Tiagabine. The therapeutic efficacy of Phenylacetic acid 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 Tandospirone. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Clemastine. The risk or severity of adverse effects can be increased when Alfentanil is combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Triflupromazine. The risk or severity of adverse effects can be increased when Nicergoline is combined with Valproic Acid. The risk or severity of adverse effects can be increased when Pimozide is combined with Valproic Acid. The metabolism of Valproic Acid can be decreased when combined with Crizotinib. The therapeutic efficacy of Valproic Acid can be decreased when used in combination with Pregabalin. The serum concentration of Valproic Acid can be decreased when it is combined with Vemurafenib. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Bromperidol. The serum concentration of Valproic Acid can be decreased when it is combined with Faldaprevir. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Baclofen. The serum concentration of Thiamylal 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 Mepivacaine. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Brompheniramine. The serum concentration of Valproic Acid can be decreased when it is combined with Enalaprilat. The metabolism of Lornoxicam can be decreased when combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Carbinoxamine. The risk or severity of adverse effects can be increased when Reserpine is combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Adipiplon. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Olopatadine. The metabolism of Terfenadine can be decreased when combined with Valproic Acid. The risk or severity of adverse effects can be increased when Pergolide is combined with Valproic Acid. Valproic Acid may increase the central nervous system depressant (CNS depressant) activities of Paraldehyde. The metabolism of Valproic Acid can be decreased when combined with Zafirlukast. The metabolism of Antipyrine can be decreased when combined with Valproic Acid. The metabolism of Valproic Acid can be decreased when combined with Cimetidine. The serum concentration of Clomipramine can be increased when it is combined with Valproic Acid. The metabolism of Idarubicin can be decreased when combined with Valproic Acid. The serum concentration of Valproic Acid can be decreased when it is combined with Dabigatran etexilate. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Chlorzoxazone. Valproic Acid may increase the central nervous system depressant (CNS depressant) activities of Zolpidem. The metabolism of Valproic Acid can be decreased when combined with Citalopram. The risk or severity of adverse effects can be increased when Isoflurane is combined with Valproic Acid. The risk or severity of adverse effects can be increased when Valproic Acid is combined with Amperozide. The serum concentration of Valproic Acid can be decreased when it is combined with Fosamprenavir. The risk or severity of adverse effects can be increased when Butorphanol is combined with Valproic Acid. The metabolism of Bexarotene can be decreased when combined with Valproic Acid. The serum concentration of Valproic Acid can be decreased when it is combined with Zofenopril.