Valproic acid is a medication primarily used to treat epilepsy and bipolar disorder. It works by stabilizing electrical activity in the brain, helping to prevent seizures and mood swings. Valproic acid can also be prescribed for migraine prevention and is available in various forms, including tablets and liquid. This drug is known to increase the levels of a neurotransmitter called gamma-aminobutyric acid (GABA), which has a calming effect on the nervous system. While effective, valproic acid may cause side effects such as weight gain, drowsiness, and gastrointestinal issues, so monitoring by a healthcare provider is essential.