Dilantin vs. its authorized generic and generics

How to pay the least

Ask for the cash price

Generic phenytoin

No pharmacy we check posts a price for it.

Ask your pharmacy for the cash price of generic phenytoin.Find pharmacies near you
Ask one or two other pharmacies too. Cash prices for the same generic can differ a lot from store to store.

A regular generic has the same active ingredient as Dilantin, and the FDA requires it to work the same way.

Compare every option

Brand nameDilantin

Authorized genericphenytoin

Regular genericphenytoin

What you’d pay

Cash priceAsk the pharmacyUsually the highest price

Not soldNo longer sold

Cash priceAsk the pharmacyUsually the lowest

Same as Dilantin?

The original

–

Same active ingredientFillers and dyes can differ

Brand nameThe maker’s card

Dilantin’s maker has a savings card that lowers what you pay at the pharmacy.

DILANTIN Savings Card

Savings card from Viatris

No insuranceNeeds insuranceNo cash price listed.

Insurance · up to $20 off a month

The card takes up to $240 a year off your co-pay.

Or call 1-866-590-9400.

In the maker’s words

“With the Savings Card, you may save up to $20 on each 30-day fill of brand-name DILANTIN.”

From the maker’s offer on dilantin.com, checked October 26, 2026. Co-pay cards can’t be used with Medicare (including Medicare Advantage), Medicaid, TRICARE or VA.

Authorized genericNot sold now

An authorized generic of Dilantin was sold before, but it isn’t sold now. Ask your pharmacist whether a regular generic (phenytoin sodium) is available.

Source: FDA, updated October 30, 2026

Regular genericWho makes it

One company sells a generic of Dilantin that the FDA rates a substitute. A pharmacy fills whichever one it stocks. To get a certain maker, ask for it by name; most pharmacies can order it in a day or two.

Sun Pharmaceutical Industries125 mg/5 mL

Has a dye: FD&C Yellow No. 6 · Made by Taro Pharmaceutical Industries

How it looks, what’s in it, NDCs

125 mg/5 mL Orange

Package NDC
Carton of 237 mL 51672-4069-2

Inactive ingredients: carboxymethylcellulose sodium, anhydrous citric acid, FD&C Yellow No. 6, magnesium aluminum silicate, polysorbate 60, water, sodium benzoate, sucrose
FDA label

Package	NDC
Carton of 237 mL	51672-4069-2

The FDA doesn’t rate Acella Pharmaceuticals and Hikma Pharmaceuticals’s versions of phenytoin a substitute for Dilantin, so a pharmacy can’t swap them in without your prescriber’s OK.

Who sells it: FDA and Medicaid records, updated weekly. Each maker’s page, card and program is from its own site.

What it’s used for

What the FDA label says

Phenytoin is indicated for the control of tonic-clonic (grand mal) and psychomotor (temporal lobe) seizures and prevention and treatment of seizures occurring during or following neurosurgery.

Phenytoin serum level determinations may be necessary for optimal dosage adjustments (see DOSAGE AND ADMINISTRATION and CLINICAL PHARMACOLOGY sections).

Source: the FDA label for Dilantin (Avera McKennan Hospital), December 3, 2015. Full label on DailyMed

Prices checked October 26, 2026. Prices change: confirm with the pharmacy before you fill. drugalt.com/drug/dilantin/