Xcopri Generic: When Will Generic Cenobamate Be Available?
This page is aggregated from FDA records, court filings and company announcements. Coded and designed by Dr. Brian Staiger, PharmD, BCPS
Updated October 9, 2026 How we build our data
Xcopri Generic at a Glance
Four quick answers from FDA records and our estimate.
- When is the first generic expected? 2035 to 2036 A wide window Why then?
- Has the FDA approved a generic? Not yet 2 companies hold tentative approvals Why not yet?
- When does the last patent end? June 2039 2 patents listed with the FDA Why is a generic expected sooner?
- Can you buy a generic today? Not yet No company lists one for sale
Generic cenobamate is expected to be available between 2035 and 2036. None is for sale yet.
Why 2035 to 2036?
The patent fight is likely to end in an agreement that sets the launch. The terms are not public yet. We rate it probable: more likely than not, but it can still move.
If Xcopri’s last patent runs to June 2039, how can a generic come sooner?
The patent that runs to June 2039 (11,654,133) covers a way of using it. A patent like that protects one way of making or using the medicine, not the medicine itself. A generic company can often make its version a different way or leave that use off its label, or a court can rule the patent invalid or not infringed. Here, the companies are expected to settle on a date. Generic companies have been challenging Xcopri’s patents with the FDA since March 2024. That is why the expected month comes before the last protection ends. See the road to a generic
Why hasn’t the FDA approved a generic yet?
That is normal before a launch. The FDA usually can’t give a generic its final approval while a patent or exclusivity still blocks it, so final approval often comes close to the day the generic can be sold. 2 companies already hold a “tentative” approval, the FDA’s word for a generic that is ready but still blocked: Zenara Pharma Private Ltd (June 2025) and Aurobindo Pharma Limited (April 2026). See who is lined up
Will the generic cost less?
Usually, and more so as more companies sell one. 3 companies have applied to the FDA to make it. In the FDA’s study of past launches, pharmacies paid about 44% less once two companies sold a generic, which would take the $39.86 pharmacies pay per tablet for Xcopri today to about $22.32. See the price estimate
What should I do now?
Keep taking Xcopri as prescribed. When a generic arrives, your pharmacy may switch you to it automatically, and it may look different. What a generic means for you
Our month is only an estimate based on available information, so we never name a day.
Xcopri by the Numbers
- Reason
- Settlement expectedThe patent fight is likely to end in an agreement that sets the launch. The terms are not public yet.
- How sure
- Probable More likely than not, but it can still move.
- Price competition
- Moderate 3 companies have filed, 2 first in line
- Brand sales
- $751M a yearBig seller
- FDA approved 2020 March 2020 FDA Orange Book
- Patents listed 2 last runs to June 2039 A generic is expected sooner, between 2035 and 2036. See why FDA Orange Book
- Pharmacies pay $39.86 per tablet, up 5.8% in a year NADAC, October 2026
- Medicare Part D spent $220.6M in 2025, for 15.7K people CMS Part D Spending by Drug
- Medicaid prescriptions 148.4K in the last four reported quarters, $213.4M CMS Medicaid drug utilization, to Q1 2026
Xcopri’s Road to a Generic
Xcopri has had the market to itself since the FDA approved it in March 2020 (Sk Life Science Inc). Its 2 listed patents run to June 2039. Generic companies have challenged its patents with the FDA since March 2024.
The first generic of Xcopri is expected between 2035 and 2036.
Why that month: the patent fight is likely to end in an agreement that sets the launch. The terms are not public yet.
Why a Generic Can Come Before June 2039
The last listed patent runs to June 2039, but it covers a way of using it, not the medicine itself, which a generic can often work around or challenge. Dr. Brian explains
Each bar runs from the brand’s approval to the day that protection ends. The green band is our projection for the first generic: a month, never a day, because legal dates move and a generic reaches shelves days to weeks after it is allowed. Sources: FDA Orange Book; the expected month from court records and company announcements.
Xcopri Patents and FDA Protections
Every patent and exclusivity the FDA Orange Book lists for Xcopri’s own applications. A protection running past the expected month does not mean the date is wrong: a settlement or a court ruling can let a generic in before a patent ends, and a patent on one formulation or use does not block every generic.
| Patent | What it covers | Protects until | Status |
|---|---|---|---|
| 7,598,279 | The active ingredient | October 2032 | Active |
| 11,654,133 | A way of using it (U-3610) | June 2039 | Active |
Source: FDA Orange Book, application 212839. Patent numbers open the patent on Google Patents.
Patent Challenges to Xcopri
The first patent challenge to Xcopri reached the FDA in March 2024, from 2 companies on that first day. The FDA has not approved a first challenger’s generic yet.
What Is a Patent Challenge?
A generic company that wants to sell its version before Xcopri’s patents run out can tell the FDA that a patent is invalid, or that its version does not infringe it. The FDA calls this a “Paragraph IV certification.” The brand company usually sues, and the FDA then generally cannot approve that generic for up to 30 months while the case runs. To reward going first, the companies that challenge first can get a 180-day head start: the FDA cannot approve the generics that came after them until it ends.
| Product | First challenged | Companies that day | 180-day head start | First challenger’s generic | Challenged patents run to | |
|---|---|---|---|---|---|---|
| Approved | On sale | |||||
| Tablets, 12.5 mg, 25 mg, 50 mg, 100 mg, 150 mg and 200 mg | March 2024 | 2 companies | No decision yet | Not yet | Not yet | June 2039 |
Source: the FDA’s Paragraph IV Patent Certifications list, as of September 2026. The FDA began posting the 180-day decisions and the first challenger’s approval and first sale in June 2019: an older entry it has not updated since reads “Not posted”, and “Not yet” means the list records no such event. “Companies that day” is the FDA’s count of challenges that arrived on the first day.
Who Is Lined Up to Make Generic Cenobamate
Three steps stand between a brand and a generic you can buy: a company applies to the FDA, the FDA approves it, and the company starts selling it.
Applied to the FDA
3 companies have applied to the FDA to make generic cenobamate.
The FDA has tentatively approved 2 companies’ generics: Zenara Pharma Private Ltd (June 2025) and Aurobindo Pharma Limited (April 2026). A tentative approval means the generic is ready, but a patent or exclusivity still stops the FDA from giving it final approval.
The FDA keeps the other applications private until it acts on them, so those companies are not named here.
First in line. 2 of them were first in line, both filing on the first day any company did: they can share 180 days on the market before the other generics, which is why being first matters.
Generic companies have challenged Xcopri’s patents with the FDA since March 2024: see the patent challenges.
Approved by the FDA
Not yet. The FDA has not approved a generic cenobamate. Final approval often comes close to the day a generic can be sold.
For Sale in Pharmacies
Not yet. No company lists a generic cenobamate for sale with the FDA.
Sources: how many companies have applied, from court records and company announcements; approved generics from the FDA Orange Book; tentative approvals from Drugs@FDA; what is for sale from the FDA NDC Directory. The FDA does not disclose an application before it approves it (21 CFR 314.430).
Xcopri Price: What Pharmacies Pay and What Generics Usually Do
What Pharmacies Pay for Xcopri 50 mg tablet
$39.86 per tablet in October 2026, up 5.8% from a year earlier.
Hover over or tap anywhere on the chart to see that month’s price.
- Xcopri 12.5-25 mg titration pk $3.91 each
- Xcopri 25 mg tablet $39.88 per tablet
- Xcopri 50 mg tablet $39.86 per tablet
- Xcopri 50-100 mg titration pak $42.71 each
- Xcopri 100 mg tablet $39.87 per tablet
- Xcopri 150 mg tablet $39.86 per tablet
- Xcopri 150-200 mg titration pk $42.91 each
- Xcopri 200 mg tablet $39.88 per tablet
- Xcopri 250 mg daily dose pack $21.37 each
- Xcopri 350 mg daily dose pack $42.70 each
See the numbers
| Month | Pharmacies paid per tablet |
|---|---|
| October 2026 | $39.86 |
| September 2026 | $39.86 |
| August 2026 | $39.85 |
| July 2026 | $39.83 |
| June 2026 | $39.82 |
| May 2026 | $39.83 |
| April 2026 | $39.90 |
| March 2026 | $39.90 |
| February 2026 | $39.90 |
| January 2026 | $39.90 |
| February 2024 | $37.68 |
| January 2024 | $37.68 |
NADAC: the national average price retail pharmacies pay to buy the medicine (CMS survey, updated weekly), the last price of each month for one package. It is not what you pay: that depends on your insurance or discount card.
What a Generic Could Cost
How we estimate it. We start from what pharmacies pay for Xcopri today: $39.86 per tablet for Xcopri 50 mg tablet in October 2026, from the national NADAC survey. Then we apply the FDA’s finding of how far that price usually falls as generic companies join: about 31% with one company, 44% with two, 73% with four and over 95% with six or more (the typical drop for every drug whose first generic came out from 2015 to 2017). Xcopri has 3 companies lined up, so our estimate uses the figure for two companies. More companies would bring the price lower; fewer, less of a drop.
Dollar figures apply FDA’s median drops to the $39.86 pharmacies pay per tablet today. An estimate from the pattern, not a price quote: what you pay depends on your insurance or discount card.
Median prices pharmacies paid for the generic (invoice prices), compared with the brand’s price before generic entry, from FDA’s 2019 analysis “Generic Competition and Drug Prices”. At the manufacturer’s price FDA found steeper drops (about 39%, 54%, 79% and over 95%), the figures quoted elsewhere on this tracker. A typical pattern, not a price quote for this medicine.
What Medicare and Medicaid Spend on Xcopri
Big public spending is part of why generic makers line up for a medicine, and why its first generic matters beyond the pharmacy counter. Figures are before manufacturer rebates, which are confidential.
Medicare Part D Spending
What Medicare drug plans spent on Xcopri, before manufacturer rebates.
- $64.5M
- January to March 2026, the latest CMS has posted
For 14,365 people, about $1,398 per prescription fill - $220.6M
- 2025, the whole year
For 15,747 people, about $1,367 per prescription fill
See the numbers
| Period | Spending | People | Per fill |
|---|---|---|---|
| January to March 2026 | $64,547,172 | 14,365 | $1,397.73 |
| 2025 | $220,622,740 | 15,747 | $1,366.65 |
Source: CMS Medicare Part D Spending by Drug, matched by the brand name Xcopri only, so no generic is counted in it. What CMS says it is used for: This medication is used to treat a certain type of seizure disorder (partial onset). It is not known exactly how it works, but it may affect the action of some nerves that cause seizures.
Medicaid Prescriptions by Quarter
148,433 prescriptions in the four quarters to Q1 2026, $213.4M paid.
See the numbers
| Quarter | Prescriptions | Medicaid paid |
|---|---|---|
| Q1 2026 | 38,768 | $57,439,498 |
| Q4 2025 | 38,453 | $54,872,064 |
| Q3 2025 | 37,015 | $53,109,004 |
| Q2 2025 | 34,197 | $47,993,934 |
| Q1 2025 | 32,952 | $45,914,617 |
Source: CMS Medicaid State Drug Utilization Data, over Xcopri’s own package codes.
Xcopri Strengths and Forms
| Strength | Form | How it is taken | Approved | Status |
|---|---|---|---|---|
| 100MG | Tablet | Oral | March 2020 | Prescription reference product |
| 12.5MG | Tablet | Oral | March 2020 | Prescription reference product |
| 150MG | Tablet | Oral | March 2020 | Prescription reference product |
| 200MG | Tablet | Oral | March 2020 | Prescription reference product |
| 25MG | Tablet | Oral | March 2020 | Prescription reference product |
| 50MG | Tablet | Oral | March 2020 | Prescription reference product |
Source: FDA Orange Book, Sk Life Science Inc. Listed for sale today by SK Life Science, Inc. (FDA NDC Directory).
Xcopri NDC Codes and Packages
Each Xcopri package sold today has its own NDC, the product number printed on the box and on the pharmacy label. Open one to see that package’s details, what pharmacies pay for it and its patent timeline.
| NDC | Product | Package | Company |
|---|---|---|---|
| 71699-0100-30 | CENOBAMATE 100 mg/1 tablet, film coated | bottle of 30 tablets | SK Life Science, Inc. |
| 71699-0100-30 | CENOBAMATE 100 mg/1 tablet, film coated | bottle of 30 tablets | SK Life Science, Inc. |
| 71699-0204-14 | CENOBAMATE 12.5 mg/1 tablet | carton of 14 blister packs of 1 tablet | SK Life Science, Inc. |
| 71699-0150-30 | CENOBAMATE 150 mg/1 tablet, film coated | bottle of 30 tablets | SK Life Science, Inc. |
| 71699-0150-30 | CENOBAMATE 150 mg/1 tablet, film coated | bottle of 30 tablets | SK Life Science, Inc. |
| 71699-0200-30 | CENOBAMATE 200 mg/1 tablet, film coated | bottle of 30 tablets | SK Life Science, Inc. |
| 71699-0200-30 | CENOBAMATE 200 mg/1 tablet, film coated | bottle of 30 tablets | SK Life Science, Inc. |
| 71699-0025-30 | CENOBAMATE 25 mg/1 tablet, film coated | bottle of 30 tablets | SK Life Science, Inc. |
Show the other 15 Xcopri packages
| NDC | Product | Package | Company |
|---|---|---|---|
| 71699-0050-30 | CENOBAMATE 50 mg/1 tablet, film coated | bottle of 30 tablets | SK Life Science, Inc. |
| 71699-0050-30 | CENOBAMATE 50 mg/1 tablet, film coated | bottle of 30 tablets | SK Life Science, Inc. |
| 71699-0050-99 | CENOBAMATE 50 mg/1 tablet, film coated | bottle of 30 tablets | SK Life Science, Inc. |
| 71699-0050-99 | CENOBAMATE 50 mg/1 tablet, film coated | bottle of 30 tablets | SK Life Science, Inc. |
| 71699-0103-56 | kit | 1 KIT in 1 CARTON * 1 TABLET, FILM COATED in 1 BLISTER PACK * 1 TABLET, FILM COATED in 1 BLISTER PACK | SK Life Science, Inc. |
| 71699-0103-56 | kit | 1 KIT in 1 CARTON * 1 TABLET, FILM COATED in 1 BLISTER PACK * 1 TABLET, FILM COATED in 1 BLISTER PACK | SK Life Science, Inc. |
| 71699-0104-56 | kit | 1 KIT in 1 CARTON * 1 TABLET, FILM COATED in 1 BLISTER PACK * 1 TABLET, FILM COATED in 1 BLISTER PACK | SK Life Science, Inc. |
| 71699-0104-56 | kit | 1 KIT in 1 CARTON * 1 TABLET, FILM COATED in 1 BLISTER PACK * 1 TABLET, FILM COATED in 1 BLISTER PACK | SK Life Science, Inc. |
| 71699-0201-28 | kit | 1 KIT in 1 CARTON * 1 TABLET in 1 BLISTER PACK * 1 TABLET, FILM COATED in 1 BLISTER PACK | SK Life Science, Inc. |
| 71699-0201-28 | kit | 1 KIT in 1 CARTON * 1 TABLET in 1 BLISTER PACK * 1 TABLET, FILM COATED in 1 BLISTER PACK | SK Life Science, Inc. |
| 71699-0202-28 | kit | 1 KIT in 1 CARTON * 1 TABLET, FILM COATED in 1 BLISTER PACK * 1 TABLET, FILM COATED in 1 BLISTER PACK | SK Life Science, Inc. |
| 71699-0202-28 | kit | 1 KIT in 1 CARTON * 1 TABLET, FILM COATED in 1 BLISTER PACK * 1 TABLET, FILM COATED in 1 BLISTER PACK | SK Life Science, Inc. |
| 71699-0203-28 | kit | 1 KIT in 1 CARTON * 1 TABLET, FILM COATED in 1 BLISTER PACK * 1 TABLET, FILM COATED in 1 BLISTER PACK | SK Life Science, Inc. |
| 71699-0203-28 | kit | 1 KIT in 1 CARTON * 1 TABLET, FILM COATED in 1 BLISTER PACK * 1 TABLET, FILM COATED in 1 BLISTER PACK | SK Life Science, Inc. |
| 71699-0999-99 | kit | 1 KIT in 1 CARTON * 1 TABLET in 1 BLISTER PACK * 1 TABLET, FILM COATED in 1 BLISTER PACK | SK Life Science, Inc. |
Source: the FDA NDC Directory, current listings only. Only packages sold under Xcopri’s own FDA approval (NDA 212839) are listed, never a generic. Some codes belong to companies that repackage Xcopri: it is the same medicine in a different package.
What a Generic Xcopri Means for You
Nothing Changes Until It Is in Pharmacies
Until a generic is actually for sale, keep filling Xcopri as usual. When one arrives, there is nothing you need to sign up for.
Your Pharmacy May Switch You Automatically
Every state lets pharmacists fill a brand-name prescription with an FDA-approved generic rated as equivalent to it, and about 19 states require them to, unless your prescriber writes “dispense as written” or “brand medically necessary” on the prescription. Some states ask the pharmacist to tell you, or to get your OK first. A study of every state’s law has the details.
It Will Probably Look Different
US trademark law does not let a generic look exactly like the brand, so the color, shape or markings usually change. The active ingredient, strength and form are the same. An “authorized generic,” made by or for the brand’s own company, can look identical. The FDA explains.
Your Insurance May Change Too
Once a lower-cost version is available, many insurance plans charge more for the brand, or stop covering it. Your plan’s drug list (formulary) says how.
Until a generic is on US pharmacy shelves, be careful with websites that offer “generic Xcopri”. The FDA warns that unlicensed online pharmacies sell counterfeit and unapproved medicines; its BeSafeRx page shows how to check a pharmacy.
Questions people ask about Xcopri
Is there a generic for Xcopri right now?
No. As of October 9, 2026 no generic cenobamate is listed for sale in the FDA NDC Directory.
When will Xcopri go generic?
2035 to 2036 is the expected window, and that is probable but not certain. The patent fight is likely to end in an agreement that sets the launch. The terms are not public yet. The last listed patent runs to June 2039, but it covers a way of using it, not the medicine itself, which a generic can often work around or challenge.
Will generic cenobamate be the same as Xcopri?
Yes in the ways that matter: the same active ingredient, strength and form, with proof that it reaches your blood the same way. Inactive ingredients can differ, which is why some people notice a different look or taste.
How much will the generic cost?
Nobody can say for sure before launch. 3 companies have applied to the FDA to make it. In the FDA’s study of past launches, pharmacies paid about 44% less once two companies sold a generic, which would take the $39.86 pharmacies pay per tablet for Xcopri today to about $22.32. That is a pattern from past launches, not a prediction for this one.
Has the FDA approved a generic Xcopri?
Not yet. The FDA Orange Book lists no approved generic version of Xcopri.
When does the Xcopri patent expire?
The FDA Orange Book lists 2 patents for Xcopri; the last runs to June 2039. A patent date is not the launch date: settlements and court rulings often bring a generic earlier, and FDA approval or a company’s own plans can make it later. The expected window on this page (2035 to 2036) weighs all of that.
Has anyone challenged the Xcopri patents?
Yes. The first patent challenge to Xcopri reached the FDA in March 2024, from 2 companies on that first day. The FDA has not approved a first challenger’s generic yet. A patent challenge (a “Paragraph IV certification”) is a generic company telling the FDA that a patent listed for the brand is invalid or will not be infringed by its version. The first companies to file one can earn a 180-day head start, during which the FDA cannot approve the generics that filed after them.
How much does Xcopri cost now?
Pharmacies paid about $39.86 per tablet for Xcopri 50 mg tablet in October 2026, by the national survey of what pharmacies pay (NADAC). That is the pharmacy’s cost, not your price: what you pay depends on your insurance or discount card.
Changes to This Projection
- First generic expected 2035 to 2036 on this month’s schedule. A line is added here whenever a monthly update moves the month, the reason or how sure it is.
Every change to the expected month is logged here with the month we saw it.
Also Going Generic
- Abilify MyCiteAripiprazoleOctober 2033
- NeffyEpinephrineFebruary 2039
- RezurockBelumosudil Mesylate2040 to 2041
- DanzitenNilotinib TartrateFebruary 2040
- IlevroNepafenacTBD no date yet
- ValturnaAliskiren Hemifumarate and ValsartanTBD no date yet
About Xcopri
- Generic name cenobamate
- How it is taken By mouth
- Company Sk Life Science Inc
- Hard to copy Inhalers, injectables, patches and other hard-to-copy products. Fewer companies attempt them and dates slip more often.
- Patent challenges Since March 2024 (FDA)
- More drugs Brand-name drugs starting with X
- Have a question? A pharmacist answers, free. Ask about Xcopri
Sources. The expected month: FDA Paragraph IV Patent Certifications list, federal court records, company announcements and securities filings (settlement dates, launch plans, sales). The record on this page: FDA Orange Book, Drugs@FDA (tentative approvals), FDA NDC Directory, FDA Paragraph IV Patent Certifications list, NADAC (CMS), CMS Medicare Part D Spending by Drug, Medicaid State Drug Utilization Data, FDA, Generic Competition and Drug Prices (2019). Updated October 9, 2026. Information, not medical advice.