DILANTIN 30 MG CAPSULE

FDA nonproprietary name: extended phenytoin sodium

For 30 capsules

Pharmacies pay

$44.97 filed

30 × $1.49889 per EA

CMS NADAC · nadac-national-average-drug-acquisition-cost-20261014.csv · eff. 2026-09-23 · as of 2026-10-14 · retrieved 2026-10-17

Medicare

We don’t know yet

No Medicare reference price. Part D: OpenBill did not match this NDC to a usable Medicare Part D spending row. Either Part D has none for it, or the rows that share its name could not safely be tied to it (for example, they mix units, routes or release forms, or the drug is sold over the counter, which Part D does not cover). Part B: This NDC is not in the current quarter’s Medicare Part B NDC-HCPCS crosswalk, so it has no Part B payment limit.

The spread

We don’t know yet

There is no Medicare figure to compare with, so there is no spread.

Cost-plus estimate

$56.72 estimated

$44.97 + $6.75 (15%) + $5.00 fee per fill = $56.72

This is a model, not a price any pharmacy quoted. Shipping is not included. How it is worked out

OpenBill calculation · nadac-national-average-drug-acquisition-cost-20261014.csv · NADAC eff. 2026-09-23 (file of 2026-10-14, retrieved 2026-10-17)

Open the interactive card Change the quantity, type what you were charged, and see every record in full.

What it is

DILANTIN 30 MG CAPSULE is how the CMS NADAC file names this product. The FDA NDC Directory lists it as extended phenytoin sodium, under the trade name “DILANTIN”.

FDA gives its dosage form as capsule, extended release and its route as oral.

The labeler, the company named on the label, is Viatris Specialty LLC.

FDA’s Established Pharmacologic Class for it is Anti-epileptic Agent.

The NADAC file of 2026-10-14 prices it under one NDC (National Drug Code), 58151-0118-01.

NADAC classes it in its brand rate-setting class B-ANDA, and does not mark it as sold over the counter.

What pharmacies pay

Pharmacies pay $44.97 for 30 capsules (30 × $1.49889 per EA, rounded to the cent), by the CMS NADAC file of 2026-10-14; that price took effect on 2026-09-23. That is what pharmacies pay their suppliers, not what they charge you.

NADAC’s explanation codes for it: 1, calculated from the most recently completed pharmacy survey; 6, the CMS Covered Outpatient Drug Product File S/I/N drug category was not applied when grouping drugs for the calculation.

What NADAC measures · Why 30 capsules · NADAC explanation codes

The NDC

58151-0118-01 · Viatris Specialty LLC · $1.49889 per EA · eff. 2026-09-23 filed

Other strengths, forms and brands

2 other products in the NADAC file share the FDA nonproprietary name extended phenytoin sodium with DILANTIN 30 MG CAPSULE.

Product	Pharmacies pay per unit	Medicare per unit
DILANTIN 30 MG CAPSULE this page brand · capsule, extended release	$1.49889 per EA filed eff. 2026-09-23	We don’t know yet
DILANTIN 100 MG CAPSULE brand · capsule, extended release	$1.73861 per EA filed eff. 2026-09-23 to 2026-09-30	We don’t know yet
PHENYTEK 200 MG CAPSULE brand · capsule, extended release	$1.4026 per EA filed eff. 2026-09-23	$1.24015 per EA filed Part D 2024 average

Part D is one average per brand and generic name, over every strength and form.

CMS NADAC · nadac-national-average-drug-acquisition-cost-20261014.csv · eff. 2026-09-23, 2026-09-30 · as of 2026-10-14 · retrieved 2026-10-17

Medicare Part D · DSD_PTD_RY26_P04_V10_DY24_BGM.csv · eff. 2024-01-01 to 2024-12-31 · as of 2026-06-25 · retrieved 2026-10-18

Compared with its class

Its NADAC price is $1.49889 per EA filed.

Of the 85 other products in FDA’s Anti-epileptic Agent class priced per EA, 41 have a higher middle NADAC price and 44 a lower one. The one in the middle is PRIMIDONE 125 MG TABLET, at $1.37851 per EA filed (eff. 2026-09-23).

Prices are compared per unit, whatever the strength or dose, and a class is not a list of substitutes.

CMS NADAC · nadac-national-average-drug-acquisition-cost-20261014.csv · eff. 2026-09-23 · as of 2026-10-14 · retrieved 2026-10-17

How the class comparison works

What Medicare paid

We don’t know yet; the card above says why.

Which Medicare figure OpenBill compares · How Part D is matched · How Part B is matched

What to ask at the counter

None of these figures is your price: what you pay depends on your pharmacy, your insurance, coupons and discounts.

What is your cash price for 30 capsules? Is it lower than what I would pay through my insurance?
These are questions about price, not medical advice. Do not change or stop a medicine without talking to your prescriber or pharmacist.

Its pharmacologic class

Anti-epileptic Agent 94 products