CELONTIN vs FOSPHENYTOIN SODIUM

Independent side-by-side comparison.

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

Possible drug interaction. CELONTIN and FOSPHENYTOIN SODIUM 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	CELONTIN	FOSPHENYTOIN SODIUM
Rating	New	72/100
Pharmacy pays	—	—
Type	RX	RX
Active ingredient	METHSUXIMIDE	FOSPHENYTOIN SODIUM
Manufacturer	Parke Davis	Hikma
Dosage forms	Capsule	Injectable, Solution
Drug class	Anti-Epileptic Agent	Anti-Epileptic Agent
Boxed warning	None	Boxed warning
Treats	Absence Epilepsy	Seizures, Status Epilepticus

celontin fosphenytoin sodium

Rating

New

72/100

Pharmacy pays

—

Type

Active ingredient

METHSUXIMIDE

FOSPHENYTOIN SODIUM

Manufacturer

Parke Davis

Hikma

Dosage forms

Capsule

Injectable, Solution

Drug class

Anti-Epileptic Agent

Boxed warning

None

Boxed warning

Treats

Absence Epilepsy

Seizures, Status Epilepticus

Frequently asked questions

What is the difference between Celontin and Fosphenytoin Sodium?

Celontin contains Methsuximide, while Fosphenytoin Sodium contains Fosphenytoin Sodium — 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.