cenobamate vs felbamate
Side-by-side comparison of cenobamate and felbamate Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Xcopri
Felbatol
Xcopri is a medicine used to treat partial-onset seizures in adults. It works by reducing the irregular electrical activity in the brain that causes seizures.
Felbamate is a medicine used to treat seizures. It is usually only prescribed when other treatments haven't worked well enough due to the risk of serious side effects.
Xcopri is used to treat partial-onset seizures in adults. Partial-onset seizures start in one area of the brain. This medicine can help reduce how often you have seizures.
Felbamate treats partial seizures in adults, both with and without generalization. It is also used as an add-on treatment for seizures related to Lennox-Gastaut syndrome in children. Because of the risk of very serious side effects, you should only use this medicine if other treatments have not worked well enough.
Xcopri helps to control seizures by affecting brain activity. It reduces the excitability of brain cells. This helps to prevent the spread of seizure activity.
Felbamate is an anticonvulsant, meaning it helps to control seizures. The exact way it works in the brain is not fully understood. It is thought to affect certain chemicals in the brain that are involved in seizures.
- • Feeling sleepy
- • Dizziness
- • Feeling tired
- • Double vision
- • Headache
- • Loss of appetite
- • Vomiting
- • Trouble sleeping
- • Feeling sick to your stomach
- • Headache
- Seizure 1,815
- Missed dose 1,263
- Tiredness 672
- Sleepiness 660
- Dizziness 537
- Seizure 345
- Medicine not working 251
- Convulsion 124
- Using the medicine for something it's not approved for 115
- Sleepiness 108
This medicine can cause a serious allergic reaction called DRESS, which can affect multiple organs. It can also cause liver problems. Tell your doctor right away if you have a fever, rash, swollen lymph nodes, or yellowing of your skin or eyes. Xcopri may cause you to have suicidal thoughts or behaviors. Watch for changes in your mood.
Felbamate can cause a severe type of anemia called aplastic anemia. This condition is very serious and can be deadly. Because of this risk, felbamate should only be used if your epilepsy is very severe and other treatments have not worked. Felbamate can also cause liver failure. Talk to your doctor about these risks before starting felbamate.
Tell your doctor if you are pregnant or plan to become pregnant. Xcopri may harm your unborn baby. There is a pregnancy registry for women who take anti-seizure medicines like Xcopri.
It is not known if felbamate can harm an unborn baby. Talk to your doctor if you are pregnant or plan to become pregnant. It is also not known if felbamate passes into breast milk, so talk to your doctor if you are breastfeeding.
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How to Read This cenobamate vs felbamate Comparison
cenobamate is classified in the Anticonvulsant drug class, while felbamate sits within the Anticonvulsant class. Because both drugs share the same classification, they are often considered interchangeable in theory — but clinical outcomes rarely track that cleanly. Both drugs are prescription-only, so a licensed provider must authorize use.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, cenobamate has 4,947 submissions while felbamate has 943. Those figures reflect cumulative reporting volume — not per-patient risk — so older, widely dispensed drugs typically look worse on count alone. No direct interaction between these two drugs is listed in our FDA-derived dataset, though co-prescription still warrants pharmacist review. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between cenobamate and felbamate — always consult your physician or pharmacist first.
Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.