100mg · 30-count · Neurology · Brand: Dilantin · Generic available
| Pharmacy | Cash Price | Per-30-Day Equiv. |
|---|---|---|
| Costco Cheapest | $22.78 | $22.78 |
| Walmart | $25.79 | $25.79 |
| Kroger | $29.23 | $29.23 |
| Target | $33.53 | $33.53 |
| Rite Aid | $92.42 | $92.42 |
| CVS | $96.71 | $96.71 |
| Walgreens | $103.16 | $103.16 |
The generic form of Phenytoin (Phenytoin Sodium ER) contains the same active ingredient and is bioequivalent to the brand. Ask your pharmacist to dispense the generic — it works the same way, typically at a fraction of the brand-name cost.
Tip: In most states, pharmacists can substitute a generic unless your prescriber writes "dispense as written" (DAW).
Phenytoin (100mg) is sold under the brand name Dilantin and the generic Phenytoin Sodium ER. A standard supply tracked here is 30 units at 100mg.
Pharmacy pricing is not regulated in the United States, so retailers set their own cash prices. Large retailers like Walmart and Costco typically offer lower prices on generics because they use prescriptions as a traffic driver. Chain pharmacies like CVS and Walgreens tend to charge more for the same medication.
Neurology medications often require consistent, uninterrupted dosing, so price-shopping should never come at the cost of a missed refill.
Shop around. The cheapest pharmacy tracked here (Costco at $22.78) charges meaningfully less than the most expensive option ($103.16). A quick call can save real money.
Ask for the generic. If your doctor prescribed the brand-name Dilantin, ask your pharmacist whether a generic is available. In most states, pharmacists can substitute a generic unless the prescriber writes "dispense as written."
Use a discount card. Services like GoodRx, SingleCare, and WellRx can sometimes negotiate prices lower than retail cash. The estimated low price for Phenytoin is around $19.82.
Coverage depends on your specific plan and formulary. Most medications in this category are covered under standard health insurance, typically in Tier 1 or Tier 2. If your copay is higher than the cash price above, it may be cheaper to pay out of pocket — ask your pharmacist to compare.
Prices shown are estimated retail cash prices modeled from CMS's public NADAC (National Average Drug Acquisition Cost) dataset, cross-referenced against typical major-chain retail markups. Actual prices vary by location and change frequently. RxCostCheck does not collect or sell your health data. Learn more →
How much does Phenytoin cost without insurance?
Without insurance, Phenytoin (100mg) ranges from $22.78 at Costco to $103.16 at Walgreens. With a discount card, the price can be as low as $19.82.
Where is the cheapest place to fill Phenytoin?
Costco currently offers the lowest estimated cash price at $22.78 for 30 100mg.
Is there a generic for Phenytoin?
Yes — the generic Phenytoin Sodium ER is available and bioequivalent to Dilantin. Ask your pharmacist to dispense the generic to save money.
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