Information last reviewed: May 2026 — for educational purposes only.
What Is Depakote (Valproic Acid)?
Valproic acid (as divalproex sodium, brand Depakote) is a broad-spectrum antiepileptic drug (AED) and mood stabiliser. Its mechanisms include enhancement of GABA activity, blockade of voltage-gated sodium and calcium channels, and inhibition of histone deacetylases. These combined actions account for its efficacy across multiple seizure types and psychiatric conditions. Depakote (divalproex sodium) is a prodrug that dissociates to valproate in the GI tract; the enteric-coated formulation reduces GI side effects. Extended-release (Depakote ER) allows once-daily dosing for bipolar disorder. Therapeutic drug monitoring (serum valproate levels) is standard practice.
Prescription (Rx) Status
Valproic acid/divalproex is prescription-only. It carries three FDA black-box warnings: hepatotoxicity (especially in children under 2 years), teratogenicity (spina bifida and neurodevelopmental effects — contraindicated in pregnancy), and pancreatitis. Serum level monitoring and liver function tests are required during therapy.
Uses of Valproic Acid / Depakote
FDA-approved: simple and complex absence seizures, complex partial seizures, multiple seizure types, acute manic episodes in bipolar I disorder (Depakote), and migraine prophylaxis (Depakote ER). Off-label: bipolar depression, schizophrenia adjunct, neuropathic pain, and alcohol withdrawal.
Tablet Strengths
Depakote delayed-release tablets: 125 mg, 250 mg, and 500 mg. Depakote ER: 250 mg and 500 mg. Valproic acid syrup: 250 mg/5 mL. Depakote sprinkle capsules: 125 mg. Bipolar mania loading dose: 20 mg/kg/day. Maintenance for bipolar: 1,000–2,000 mg/day in divided doses. Epilepsy: 10–60 mg/kg/day. Target serum levels: 50–125 mcg/mL.
Price
Generic divalproex sodium is inexpensive (~$15–$40/month). Depakote ER brand is pricier; generics available.
Frequently Asked Questions
Q: Is Depakote safe during pregnancy?
A: No — valproic acid is teratogenic and carries the highest fetal risk of major antiepileptic drugs. It is contraindicated in pregnancy for migraine and is used in epilepsy/bipolar only when no safer alternative exists, with careful risk-benefit discussion.
Q: What common side effects should patients expect?
A: GI upset (nausea, vomiting), weight gain, hair thinning (alopecia), tremor, sedation, and thrombocytopenia. Hyperammonaemia can cause confusion without liver disease. LFT and CBC monitoring is recommended.
Q: What are the signs of valproate toxicity?
A: Excessive sedation, confusion, nausea, vomiting, tremor, and ataxia. Serum level above 150 mcg/mL increases toxicity risk. Serious toxicity can cause respiratory depression and coma.
Disclaimer: This page is for informational purposes only and does not constitute medical advice. Valproic acid requires a valid prescription. Always consult a qualified healthcare professional. See our full disclaimer.