💊 Valproic acid is used in seizures, bipolar disorder, and migraine prophylaxis. It works by increasing the availability of gamma (y)-aminobutyric acid (GABA), an inhibitory neurotransmitter. 🖇️ Divalproex sodium is a compound of sodium valproate and valproic acid. Divalproex dissociates to valproate in the GI tract. 🖇️ Use special caution with the combination of valproic acid and lamotrigine due to the risk of serious rash called Stevens-Johnson Syndrome.