MESANTOIN vs PRIMIDONE

Independent side-by-side comparison.

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

Possible drug interaction. MESANTOIN and PRIMIDONE 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	MESANTOIN	PRIMIDONE
Rating	70/100	70/100
Pharmacy pays	—	~$2.89 /30
Type	RX	RX
Active ingredient	MEPHENYTOIN	PRIMIDONE
Manufacturer	Novartis	Amneal
Dosage forms	Tablet	Tablet
Drug class	—	Anti-Epileptic Agent
Boxed warning	None	None
Treats	Tonic-Clonic Epilepsy, Temporal Lobe Epilepsy, Post-Traumatic Epilepsy	Partial Epilepsies, Tonic-Clonic Epilepsy, Tremor

mesantoin primidone

Rating

70/100

Pharmacy pays

—

~$2.89 /30

Type

Active ingredient

MEPHENYTOIN

PRIMIDONE

Manufacturer

Novartis

Amneal

Dosage forms

Tablet

Drug class

—

Anti-Epileptic Agent

Boxed warning

None

Treats

Tonic-Clonic Epilepsy, Temporal Lobe Epilepsy, Post-Traumatic Epilepsy

Partial Epilepsies, Tonic-Clonic Epilepsy, Tremor

Frequently asked questions

Which is better-rated, Mesantoin or Primidone?

Mesantoin and Primidone are tied at 3.5 out of 5 by our independent rating.

What is the difference between Mesantoin and Primidone?

Mesantoin contains Mephenytoin, while Primidone contains Primidone — 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.