MYSOLINE vs NEURONTIN

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 20, 2026·How we rate

Possible drug interaction. MYSOLINE and NEURONTIN 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	MYSOLINE	NEURONTIN
Rating	70/100	New
Pharmacy pays	~$2.89 /30	~$1.22 /30
Type	RX	RX
Active ingredient	PRIMIDONE	GABAPENTIN
Manufacturer	Valeant Pharm Intl	Parke Davis
Dosage forms	Tablet	Capsule, Solution, Tablet
Drug class	Anti-Epileptic Agent	Anti-Epileptic Agent
Boxed warning	None	None
Half-life	—	about 5 to 7 hours in adults with normal kidney function
Treats	Partial Epilepsies, Tonic-Clonic Epilepsy, Tremor	Bipolar Disorder, Partial Epilepsies, Phobic Disorders

mysoline neurontin

Rating

70/100

New

Pharmacy pays

~$2.89 /30

~$1.22 /30

Type

Active ingredient

PRIMIDONE

GABAPENTIN

Manufacturer

Valeant Pharm Intl

Parke Davis

Dosage forms

Tablet

Capsule, Solution, Tablet

Drug class

Anti-Epileptic Agent

Boxed warning

None

Half-life

—

about 5 to 7 hours in adults with normal kidney function

Treats

Partial Epilepsies, Tonic-Clonic Epilepsy, Tremor

Bipolar Disorder, Partial Epilepsies, Phobic Disorders

Frequently asked questions

Which is cheaper, Mysoline or Neurontin?

Neurontin costs pharmacies less to acquire — about $1.22 vs $2.89 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 Mysoline and Neurontin?

Mysoline contains Primidone, while Neurontin 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.