Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Levetiracetam (Keppra) and brivaracetam (Briviact) are both antiepileptic medications used to treat seizures, but they have some differences. Levetiracetam is available in both generic and brand forms, while brivaracetam is only available as the brand Briviact. Levetiracetam can be taken as an immediate-release tablet, extended-release tablet, or liquid, and is usually taken once or twice a day. Brivaracetam, on the other hand, is typically taken twice daily and comes as a tablet, oral solution, and injection. Levetiracetam is not a controlled substance, whereas brivaracetam is a Schedule V controlled substance, meaning it has some potential for abuse and dependence. Common side effects of levetiracetam include sleepiness, weakness, and headaches, while brivaracetam often causes drowsiness and dizziness.
Levetiracetam (Keppra)
Briviact (brivaracetam)
Levetiracetam (Keppra)
Briviact (brivaracetam)
Summary of Keppra vs. Briviact
Summary for Antiepileptic
Prescription only
Immediate-release levetiracetam is a seizure medication for adults and children. It's known as the brand names Keppra and Roweepra, and it also has a generic version. This medication comes as a tablet and liquid that's taken twice each day. The dosage depends on your age, weight, and the type of seizure you have. Levetiracetam (Keppra) doesn't have any known interactions with food or medications. Common side effects include weakness, sleepiness, and headache.
Summary for Antiepileptic
Prescription only
Briviact (brivaracetam) is used to treat partial-onset seizures (also known as focal onset aware seizures). It's approved for adults and children ages 1 month and older. This antiepileptic medication works by helping to calm brain activity. Briviact (brivaracetam) comes as a tablet and oral solution that you take by mouth twice a day. It also comes as an injection given into the vein (IV) by a healthcare professional when in the hospital. Side effects include drowsiness and dizziness. As of mid 2025, there's no generic version of this medication available.
Side effects were reported by people with focal aware seizures taking levetiracetam (Keppra) with other seizure medications. Side effects might differ for other seizure types.
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Adults:
•Weakness (15%)
•Sleepiness (15%)
•Headache (14%)
•Infection (13%)
•Dizziness (9%)
Children:
•Headache (19%)
•Common cold symptoms (15%)
•Vomiting (15%)
•Sleepiness (13%)
•Tiredness (11%)
•Being aggressive (10%)
•Cough (9%)
•Stuffy nose (9%)
•Upper stomach pain (9%)
•Lower appetite (8%)
Common Side Effects for
•Drowsiness (16%)
•Dizziness (12%)
•Tiredness (9%)
•Nausea or vomiting (5%)
Warnings of Keppra vs. Briviact
Common Side Effects for
•Abnormal mood, thoughts, or behavior
•Suicidal thoughts or behavior
•Difficulty with speech, movement, and concentration
•Serious allergic reactions and skin reactions
•Withdrawal seizures
•Low blood cell counts
•Higher blood pressure in young children
•Seizure control during pregnancy
Common Side Effects for
•Suicidal thoughts or behavior
•Drowsiness, fatigue, dizziness, and trouble with coordination