Displaying 4 results of Valproic Acid Impurities Valproic acid is a commonly prescribed medication for seizures, bipolar disorder, and migraines. However, it is important to ensure that the medication is pure and free of impurities. Impurities in Valproic acid can cause adverse reactions, including liver damage, gastrointestinal issues, and nervous system disorders. Quality control measures must be taken to ensure the medication is free of impurities to protect patient safety.