Valproic acid is an active pharmaceutical ingredient (API) used in the formulation of several medications. The manufacturing process involves the synthesis of the active compound and its purification to ensure the desired level of purity and quality is achieved. The API is then used in the formulation of medications by pharmaceutical companies. The medication primarily used to treat epilepsy and bipolar disorder. Valproic acid is also known as sodium valproate or valproate semisodium. It works by increasing the levels of a neurotransmitter called gamma-aminobutyric acid in the brain. This helps to reduce the abnormal electrical activity in the brain that can cause seizures.