Product Information

CELONTIN 300 MG CAPSULE is a brand product labeled by Pfizer Inc., priced at $4.4021 per EA under NDC 00071052524. Its NADAC has been published 392 times since Nov 28, 2013.

FDA first approved this application before 1982. Its Orange Book therapeutic-equivalence code is AB — FDA rates it therapeutically equivalent to (substitutable for) its reference product.

CELONTIN 300 MG CAPSULE

methsuximide

$4.4021per EA

Strength

300 mg/1

Manufacturer

Pfizer Inc.

NDC

00071052524

Classification

Brand

Dosage Form

CAPSULE

Route

ORAL

Effective Date

8/19/2026

Active Ingredients

METHSUXIMIDE

Approval Type

New Drug (NDA)

FDA Application

NDA010596

FDA Approved

Before 1982

TE Code

On Market Since

2/8/1957

Pharmacological Classes

Anti-epileptic Agent

Decreased Central Nervous System Disorganized Electrical Activity

Price Statistics

The NADAC for CELONTIN 300 MG CAPSULE has been published 392 times since Nov 28, 2013, and over the history we have for it it has risen 124.7%. The table below summarizes its recorded NADAC range and movement.

Current price	$4.4021 per EA
All-time high	$4.4021 (Aug 19, 2026)
All-time low	$1.9592 (Nov 28, 2013)
52-week high	$4.4021
52-week low	$4.3993
Median price	$3.7529
Average price	$3.4498
Largest weekly change	+9.4% (Jan 4, 2017)
Weeks tracked	392
Tracking since	Nov 28, 2013

Price History

+0.0%

+0.1%

+7.6%

All

+124.7%

Generic Alternatives

No other NADAC-published product shares this drug's active ingredient and strength in a comparable dosage form. Compare the broader picture on the methsuximide market page.

Lowest-Cost Alternatives

No alternatives available

No alternatives found with the same active ingredient and strength in a comparable dosage form.

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CARBATROL ER 300 MG CAPSULE

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CARBATROL ER 100 MG CAPSULE

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$1.6996

per EA

KEPPRA 100 MG/ML ORAL SOLN

Brand

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$1.9186

per ML

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Brand

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$1.9303

per ML

DEPAKOTE DR 125 MG SPRINKLE CP

Brand

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$1.9659

per EA

Frequently asked questions

What is the NADAC price of CELONTIN 300 MG CAPSULE?

The current National Average Drug Acquisition Cost (NADAC) for CELONTIN 300 MG CAPSULE, manufactured by Pfizer Inc., is $4.4021 per EA (NDC 00071052524), effective Aug 19, 2026.

How has the price of CELONTIN 300 MG CAPSULE changed over time?

Over the history we have for it, the NADAC for CELONTIN 300 MG CAPSULE has risen 124.7%. It has been tracked across 392 weekly CMS publications since Nov 28, 2013.

What are the highest and lowest recorded NADAC prices for CELONTIN 300 MG CAPSULE?

Since Nov 28, 2013, the NADAC for CELONTIN 300 MG CAPSULE has ranged from a low of $1.9592 (Nov 28, 2013) to a high of $4.4021 (Aug 19, 2026), with a median of $3.7529 per EA.

Are there cheaper alternatives to CELONTIN 300 MG CAPSULE?

No other NADAC-published product currently shares the active ingredient and strength of CELONTIN 300 MG CAPSULE in a comparable dosage form, so no direct lower-cost alternative is listed.

Who manufactures CELONTIN 300 MG CAPSULE?

CELONTIN 300 MG CAPSULE (NDC 00071052524) is labeled by Pfizer Inc., and CMS classifies it as a brand product.