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DIVALPROEX SODIUM vs FELBAMATE

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 18, 2026·How we rate

Possible drug interaction. DIVALPROEX SODIUM and FELBAMATE are different prescription medicines. Combining or switching between them can cause interactions — talk to a pharmacist or prescriber before making changes. This page is not medical advice.

Rating

68/100
70/100

Pharmacy pays

~$5.99 /30
~$30.62 /30

Type

RX
RX

Active ingredient

DIVALPROEX SODIUM
FELBAMATE

Dosage forms

Capsule, Oral pellets, Capsule, delayed release, Tablet, delayed release, Tablet, extended release
Suspension, Tablet

Drug class

Anti-Epileptic Agent
Anti-Epileptic Agent

Half-life

about 9 to 16 hours (the label's mean terminal half-life range for valproate monotherapy)

Treats

Bipolar Disorder, Epilepsy, Absence Epilepsy
Seizures, Complex Partial Epilepsy, Lennox Gastaut Syndrome

Frequently asked questions

Which is better-rated, Divalproex Sodium or Felbamate?

By our independent rating, Felbamate scores higher — 3.5 vs 3.4 out of 5 for Divalproex Sodium. Ratings are based on FDA regulatory (recall-safety) data.

Which is cheaper, Divalproex Sodium or Felbamate?

Divalproex Sodium costs pharmacies less to acquire — about $5.99 vs $30.62 for a 30-count supply, per the CMS NADAC survey. That gap is in the pharmacy's cost of goods, not necessarily in what you pay: your price is set afterwards by your insurer and the pharmacy.

What is the difference between Divalproex Sodium and Felbamate?

Divalproex Sodium contains Divalproex Sodium, while Felbamate contains Felbamate — they have different active ingredients.

Ratings are based on FDA regulatory (recall-safety) data. This comparison is for general reference only — not medical advice. Always consult a licensed professional before choosing or switching a medication.