Phenytoin
9 NDCs across 8 manufacturers|8 Generic,1 Brand
Phenytoin is used to treat temporal lobe epilepsy, tonic-clonic epilepsy and status epilepticus, per the National Library of Medicine's MED-RT classification.
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The brand product was first FDA-approved before 1982, and the first generic was approved Jan 1, 1982. FDA's Orange Book lists 6 AB-rated (therapeutically equivalent) products for this ingredient. In 2024, Medicare Part D spent $5 million on Phenytoin across 109,000 claims for 15,000 beneficiaries.
Phenytoin is available as 9 NDCs from 8 manufacturers (8 generic, 1 brand), with NADAC prices from $0.18 to $1.58 per EA — the most expensive product costs about 8.7× the cheapest. Every pack size and labeler in this drug market is compared side-by-side below.
Total NDCs
9
8G / 1B
Manufacturers
8
competing in market
Price Spread
$0.18 – $1.58
per EA, 6 of 9 NDCs
7d Activity
avg -3.1% WoW · of 9 NDCs
Market Price Trend
Monthly average NADAC per unit, split by generic and brand.
Manufacturer Breakdown
8 manufacturers producing PHENYTOIN(3 pricing outliers)
| Drug ↕ | Price | 7d Change ↕ |
|---|---|---|
DILANTIN 50 MG INFATAB | $1.5767 per EA | +0.24% |
PHENYTOIN 50 MG TABLET CHEW | $0.1812 per EA | -3.54% |
PHENYTOIN 50 MG INFATAB CHEW | $0.1812 per EA | -3.54% |
PHENYTOIN 50 MG TABLET CHEW | $0.1812 per EA | -3.54% |
PHENYTOIN 50 MG TABLET CHEW | $0.1812 per EA | -3.54% |
PHENYTOIN 50 MG TABLET CHEW | $0.1812 per EA | -3.54% |
PHENYTOIN 125 MG/5 ML SUSP | $0.0756 per ML | -3.44% |
PHENYTOIN 125 MG/5 ML SUSP | $0.0756 per ML | -3.44% |
PHENYTOIN 125 MG/5 ML SUSP | $0.0756 per ML | -3.44% |
Frequently Asked Questions
What is Phenytoin used to treat?
Phenytoin is used to treat temporal lobe epilepsy, tonic-clonic epilepsy and status epilepticus, per the National Library of Medicine's MED-RT classification.
When did Phenytoin become available as a generic?
FDA approved the first generic Phenytoin (ANDA) on Jan 1, 1982. The Orange Book currently lists 6 AB-rated products for this ingredient, meaning FDA considers them therapeutically equivalent to the brand.
How much does Medicare spend on Phenytoin?
In 2024, Medicare Part D spent $5 million on Phenytoin across 109,000 claims for 15,000 beneficiaries.
How many Phenytoin products are on the market?
The Phenytoin drug market contains 9 NDCs from 8 manufacturers — 8 generic and 1 brand product.
What is the price range for Phenytoin?
NADAC reference prices for Phenytoin range from $0.1812 to $1.5767 per EA — the most expensive product costs about 8.7× the cheapest. 3 additional products are priced per different units (e.g. liquids per ML) and aren't directly comparable.
Is generic Phenytoin cheaper than brand?
The average generic NADAC for Phenytoin is $0.1812 per EA, versus $1.5767 for brand-labeled products — brand versions average about 8.7× the generic price.
Which manufacturers make Phenytoin?
8 manufacturers list Phenytoin in NADAC. Ranked by number of NDCs, the largest are Sun Pharmaceutical Industries Inc. (2), Pfizer Inc. (1), Major Pharmaceuticals (1), Prasco Laboratories (1), Taro Pharmaceuticals U.S.A. Inc. (1).
How has the price of Phenytoin changed recently?
Over the past 7 days, 1 Phenytoin NDC rose and 8 fell, with a market-wide average change of -3.1%.