TOPIRAMATE ER 100 MG CAPSULE
For 30 capsules
Pharmacies pay
$320.26 filed
30 × $10.67522 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 Part D paid
$395.84 filed
30 × $13.19463 per EA, Part D average
Medicare's price is not your price.
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
The spread
1.2× estimated
Medicare paid 1.2× what pharmacies pay.
Part D averages every strength and form sold under “Topiramate ER” / “Topiramate” into one figure, so it is not specific to this NDC.
OpenBill calculation · DSD_PTD_RY26_P04_V10_DY24_BGM.csv + nadac-national-average-drug-acquisition-cost-20261014.csv · NADAC eff. 2026-09-23 (file of 2026-10-14, retrieved 2026-10-17) · Part D 2024-01-01 to 2024-12-31 (file of 2026-06-25, retrieved 2026-10-18)
Cost-plus estimate
$373.30 estimated
$320.26 + $48.04 (15%) + $5.00 fee per fill = $373.30
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
TOPIRAMATE ER 100 MG CAPSULE is how the CMS NADAC file names this product. The FDA NDC Directory lists it as topiramate.
FDA gives its dosage form as capsule, extended release and its route as oral.
FDA lists 5 labelers (the companies named on the label) for its NDCs, among them Teva Pharmaceuticals, Inc., Par Health USA, LLC and Dr. Reddy’s Laboratories Inc.
FDA lists no Established Pharmacologic Class for it.
The NADAC file of 2026-10-14 prices it under 7 NDCs (National Drug Codes).
NADAC classes it as a generic drug (rate-setting class G), and does not mark it as sold over the counter.
What pharmacies pay
Pharmacies pay $320.26 for 30 capsules (30 × $10.67522 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 code for it: 1, calculated from the most recently completed pharmacy survey.
What NADAC measures · Why 30 capsules · NADAC explanation codes
The 5 labelers
| Labeler | NDCs | Pharmacies pay per unit |
|---|---|---|
| Par Health USA, LLC | 2 | $10.67522 per EA filed |
| Teva Pharmaceuticals, Inc. | 2 | $10.67522 per EA filed |
| Dr. Reddy’s Laboratories Inc. | 1 | $10.67522 per EA filed |
| Lupin Pharmaceuticals, Inc. | 1 | $10.67522 per EA filed |
| Zydus Pharmaceuticals USA Inc. | 1 | $10.67522 per EA filed |
All 7 NDCs, with labeler and price
- 00480-2358-01 · Teva Pharmaceuticals, Inc. · $10.67522 per EA · eff. 2026-09-23 filed
- 00480-2358-56 · Teva Pharmaceuticals, Inc. · $10.67522 per EA · eff. 2026-09-23 filed
- 10370-0367-01 · Par Health USA, LLC · $10.67522 per EA · eff. 2026-09-23 filed
- 10370-0367-11 · Par Health USA, LLC · $10.67522 per EA · eff. 2026-09-23 filed
- 43598-0941-30 · Dr. Reddy’s Laboratories Inc. · $10.67522 per EA · eff. 2026-09-23 filed
- 68382-0769-06 · Zydus Pharmaceuticals USA Inc. · $10.67522 per EA · eff. 2026-09-23 filed
- 70748-0277-06 · Lupin Pharmaceuticals, Inc. · $10.67522 per EA · eff. 2026-09-23 filed
Other strengths, forms and brands
26 other products in the NADAC file share the FDA nonproprietary name topiramate with TOPIRAMATE ER 100 MG CAPSULE. The 23 below share a strength or dosage form with it first; search OpenBill for the rest.
| Product | Pharmacies pay per unit | Medicare per unit |
|---|---|---|
| EPRONTIA 25 MG/ML SOLUTION | $1.58252 to $2.7158 per ML filed | $1.88561 per ML filed |
| TOPAMAX 25 MG SPRINKLE CAP | $7.53998 per EA filed | $15.99196 per EA filed |
| TOPAMAX 25 MG TABLET | $6.57757 per EA filed | $15.99196 per EA filed |
| TOPAMAX 50 MG TABLET | $13.13389 per EA filed | $15.99196 per EA filed |
| TOPAMAX 100 MG TABLET | $17.91087 per EA filed | $15.99196 per EA filed |
| TOPAMAX 200 MG TABLET | $21.07055 per EA filed | $15.99196 per EA filed |
| TOPIRAMATE 15 MG SPRINKLE CAP | $0.22941 per EA filed | $0.12224 per EA filed |
| TOPIRAMATE 25 MG SPRINKLE CAP | $0.24588 per EA filed | $0.12224 per EA filed |
| TOPIRAMATE 25 MG TABLET | $0.02684 per EA filed | $0.12224 per EA filed |
| TOPIRAMATE 100 MG TABLET | $0.05669 per EA filed | $0.12224 per EA filed |
| TOPIRAMATE 200 MG TABLET | $0.11016 per EA filed | $0.12224 per EA filed |
| TOPIRAMATE ER 25 MG CAPSULE | $4.13989 per EA filed | $13.19463 per EA filed |
| TOPIRAMATE ER 25 MG SPRINKL CAP | $2.25428 per EA filed | $13.19463 per EA filed |
| TOPIRAMATE ER 50 MG CAPSULE | $6.17393 per EA filed | $13.19463 per EA filed |
| TOPIRAMATE ER 50 MG SPRINKL CAP | $3.14622 per EA filed | $13.19463 per EA filed |
| TOPIRAMATE ER 100 MG CAPSULE this page | $10.67522 per EA filed | $13.19463 per EA filed |
| TOPIRAMATE ER 100 MG SPRINK CAP | $5.49212 per EA filed | $13.19463 per EA filed |
| TOPIRAMATE ER 150 MG SPRINK CAP | $7.35688 per EA filed | $13.19463 per EA filed |
| TOPIRAMATE ER 200 MG CAPSULE | $20.37363 per EA filed | $13.19463 per EA filed |
| TOPIRAMATE ER 200 MG SPRINK CAP | $9.54204 per EA filed | $13.19463 per EA filed |
| TROKENDI XR 25 MG CAPSULE | $13.29949 per EA filed | $31.9352 per EA filed |
| TROKENDI XR 50 MG CAPSULE | $17.43323 per EA filed | $31.9352 per EA filed |
| TROKENDI XR 100 MG CAPSULE | $34.43756 per EA filed | $31.9352 per EA filed |
| TROKENDI XR 200 MG CAPSULE | $47.1431 per EA filed | $31.9352 per EA filed |
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. 2026-01-01, 2026-07-01, 2026-09-23 · 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
What Medicare paid
Medicare Part D paid $395.84 for 30 capsules, at an average of $13.19463 per EA in 2024 (2024-01-01 to 2024-12-31) for “Topiramate ER” and “Topiramate”, every strength and form sold under that name together (Medicare Part D Spending by Drug, file of 2026-06-25).
That average covers 35,445 Part D claims (fills, including refills) for 2024-01-01 to 2024-12-31, across every maker, strength and form under the name.
Medicare's price is not your price.
What Part D spending measures · Which Medicare figure OpenBill compares · How the spread is worked out
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?
- If you have Medicare Part D: what is my plan’s copay or coinsurance for it? The Part D average on this page is not what you pay.
- These are questions about price, not medical advice. Do not change or stop a medicine without talking to your prescriber or pharmacist.
Questions
- Why is the comparison with Medicare for TOPIRAMATE ER 100 MG CAPSULE labelled estimated?
- Beyond what the card shows, the records give these reasons: The Part D figure covers 2024-01-01 to 2024-12-31; the NADAC price is from the file of 2026-10-14. Part D spending basis, as the Part D record states it: Part D 2024 average spend per dosage unit for Topiramate ER / Topiramate: all makers, strengths, forms and routes combined, claim-weighted; gross cost incl. dispensing fees and patient pay, before rebates. Unit taken as NADAC's EA. Joined on generic name.