FELBAMATE vs GRALISE

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 19, 2026·How we rate

Possible drug interaction. FELBAMATE and GRALISE 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.

Attribute	FELBAMATE	GRALISE
Rating	70/100	New
Pharmacy pays	~$30.62 /30	~$1.22 /30
Type	RX	RX
Active ingredient	FELBAMATE	GABAPENTIN
Manufacturer	Amneal	Almatica
Dosage forms	Suspension, Tablet	Tablet
Drug class	Anti-Epileptic Agent	Anti-Epileptic Agent
Boxed warning	Boxed warning	None
Half-life	—	about 5 to 7 hours in adults with normal kidney function
Treats	Seizures, Complex Partial Epilepsy, Lennox Gastaut Syndrome	Bipolar Disorder, Partial Epilepsies, Phobic Disorders

felbamate gralise

Rating

70/100

New

Pharmacy pays

~$30.62 /30

~$1.22 /30

Type

Active ingredient

FELBAMATE

GABAPENTIN

Manufacturer

Amneal

Almatica

Dosage forms

Suspension, Tablet

Tablet

Drug class

Anti-Epileptic Agent

Boxed warning

None

Half-life

—

about 5 to 7 hours in adults with normal kidney function

Treats

Seizures, Complex Partial Epilepsy, Lennox Gastaut Syndrome

Bipolar Disorder, Partial Epilepsies, Phobic Disorders

Frequently asked questions

Which is cheaper, Felbamate or Gralise?

Gralise costs pharmacies less to acquire — about $1.22 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 Felbamate and Gralise?

Felbamate contains Felbamate, while Gralise contains Gabapentin — 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.