TRILEPTAL 300 MG/5 ML SUSP
FDA nonproprietary name: oxcarbazepine
For 250 mL
Pharmacies pay
$482.69 filed
250 × $1.93077 per ML
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
$560.09 estimated
$482.69 + $72.40 (15%) + $5.00 fee per fill = $560.09
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
TRILEPTAL 300 MG/5 ML SUSP is how the CMS NADAC file names this product. The FDA NDC Directory lists it as oxcarbazepine, under the trade name “Trileptal”.
FDA gives its dosage form as suspension and its route as oral.
The labeler, the company named on the label, is Novartis Pharmaceuticals Corporation.
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), 00078-0357-52.
NADAC classes it as a brand-name drug (rate-setting class B), and does not mark it as sold over the counter.
What pharmacies pay
Pharmacies pay $482.69 for 250 mL (250 × $1.93077 per ML, 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; 5, calculated based on package size.
NADAC also lists, on the row of one brand NDC, what pharmacies pay for the generic equivalent, a different product: $0.11023 per ML filed.
CMS NADAC · nadac-national-average-drug-acquisition-cost-20261014.csv · eff. 2026-09-23 · as of 2026-10-14 · retrieved 2026-10-17
What NADAC measures · NADAC explanation codes
The NDC
- 00078-0357-52 · Novartis Pharmaceuticals Corporation · $1.93077 per ML · eff. 2026-09-23 filed
Other strengths, forms and brands
13 other products in the NADAC file share the FDA nonproprietary name oxcarbazepine with TRILEPTAL 300 MG/5 ML SUSP.
| Product | Pharmacies pay per unit | Medicare per unit |
|---|---|---|
| OXCARBAZEPINE 150 MG TABLET | $0.10623 per EA filed | We don’t know yet |
| OXCARBAZEPINE 300 MG TABLET | $0.16669 per EA filed | We don’t know yet |
| OXCARBAZEPINE 300 MG/5 ML SUSP | $0.11023 per ML filed | We don’t know yet |
| OXCARBAZEPINE 600 MG TABLET | $0.31696 per EA filed | We don’t know yet |
| OXCARBAZEPINE ER 150 MG TABLET | $3.49768 per EA filed | $12.28128 per EA filed |
| OXCARBAZEPINE ER 300 MG TABLET | $4.73052 per EA filed | $12.28128 per EA filed |
| OXCARBAZEPINE ER 600 MG TABLET | $9.5783 per EA filed | $12.28128 per EA filed |
| OXTELLAR XR 150 MG TABLET | $9.02471 per EA filed | $17.96079 per EA filed |
| OXTELLAR XR 300 MG TABLET | $12.75205 per EA filed | $17.96079 per EA filed |
| OXTELLAR XR 600 MG TABLET | $23.29894 per EA filed | $17.96079 per EA filed |
| TRILEPTAL 150 MG TABLET | $5.72156 per EA filed | We don’t know yet |
| TRILEPTAL 300 MG TABLET | $10.45435 per EA filed | We don’t know yet |
| TRILEPTAL 300 MG/5 ML SUSP this page | $1.93077 per ML filed | We don’t know yet |
| TRILEPTAL 600 MG TABLET | $19.33273 per EA filed | We don’t know yet |
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. 2026-01-07, 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
Compared with its class
Its NADAC price is $1.93077 per ML filed.
Of the 7 other products in FDA’s Anti-epileptic Agent class priced per ML, 2 have a higher middle NADAC price and 5 a lower one. The one in the middle is OXCARBAZEPINE 300 MG/5 ML SUSP, at $0.11023 per ML 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
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 250 mL? Is it lower than what I would pay through my insurance?
- How much is in the package I am getting? This page uses 250 mL; your package may hold a different amount.
- These are questions about price, not medical advice. Do not change or stop a medicine without talking to your prescriber or pharmacist.
Questions
- Why does this page start at 250 mL?
- NADAC prices this product per ML. The FDA NDC Directory’s package description gives 250 mL in one package for this product’s NDC (“250 mL in 1 BOTTLE (0078-0357-52)”), so the card starts at one package: 250 ML. Change it to match your prescription.
Related pages
Its pharmacologic class
Related in the same class
- GABAPENTIN 600 MG TABLET
- DIVALPROEX SOD ER 250 MG TAB
- PRIMIDONE 125 MG TABLET
- PHENYTEK 200 MG CAPSULE
- PHENYTEK 300 MG CAPSULE