Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Trileptal (oxcarbazepine) and Vimpat (lacosamide) are both antiepileptic medications used to treat seizures, but they have some key differences. Trileptal is available in both immediate-release and extended-release (Oxtellar XR) forms and is used to treat partial-onset seizures. The immediate-release version can be used in children as young as 2 years old. Vimpat, on the other hand, is used to treat partial-onset seizures in people as young as 1 month old and can also be used as an add-on therapy for primary generalized tonic-clonic (PGTC) seizures. Common side effects of both medications include include dizziness, nausea, and headaches, as well as serious side effects like suicidal thoughts and severe allergic reactions. Additionally, Trileptal has the risk of low blood sodium levels, whereas Vimpat can cause an abnormal heartbeat. Both medications interact with other medicines, including birth control for Trileptal, and beta blockers with Vimpat. Unlike Trileptal, Vimpat is classified as a Schedule V controlled substance, meaning it has a potential for misuse and dependence.
Oxcarbazepine (Trileptal)
Lacosamide (Vimpat)
Oxcarbazepine (Trileptal)
Lacosamide (Vimpat)
Summary of Trileptal vs. Vimpat
Summary for Antiepileptic
Prescription only
Oxcarbazepine (Trileptal) is used to treat partial-onset seizures (also called focal aware seizures). This antiepileptic is for people 2 years of age and older. It helps calm the brain to keep seizures from happening. Oxcarbazepine (Trileptal) comes as immediate-release tablets and an oral suspension. You take it by mouth twice a day. Some common side effects include dizziness, nausea, and headaches. Immediate-release oxcarbazepine comes in both brand-name and generic versions. You can take it by itself or with other anti-seizure medications.
Summary for Antiepileptic
Prescription only
Lacosamide (Vimpat) is an antiepileptic. People 1 month and older can take it on its own or with other antiepileptics for partial-onset seizures (also called focal aware seizures). It's also an add-on medication for people 4 years and older who have primary generalized tonic-clonic (PGTC) seizures (or grand mal seizures). Lacosamide (Vimpat) comes as tablets and an oral solution that's taken by mouth twice a day. It's also available as an injection that's used in the hospital. Side effects include dizziness, headache, and nausea. Lacosamide (Vimpat) comes as both brand-name and generic versions, but it's a controlled substance.