Levetiracetam Extended-Release
Prescription ·Exploratory record · not publication-reviewed ·Updated July 13, 2026
Levetiracetam extended-release is an antiseizure medication used once daily for focal-onset seizures and other seizure types depending on labeling and clinician judgment. It has minimal hepatic metabolism and few pharmacokinetic interactions, but behavioral adverse effects such as irritability, depression, aggression, or suicidality can be clinically important. Dosing must be adjusted for kidney function.
Exploratory record, not a reviewed medical publication.
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What the research says.
A quick, data-only summary. The full evidence, dosing, and sources are below.
Levetiracetam extended-release is an antiseizure medication used once daily for focal-onset seizures and other seizure types depending on labeling and clinician judgment. NutriStack rates the supporting evidence as strong. Common adult dosing is Initiate 1000 mg once daily; increase by 1000 mg every 2 weeks as needed to a maximum recommended dose of 3000 mg once daily, with renal dose adjustment., though a prescriber sets the actual dose. This profile indexes 3 sources.
The bottom line
Evidence rating strong. Most-documented uses: adjunctive treatment of focal-onset seizures, once-daily adherence support compared with immediate-release dosing, low pharmacokinetic interaction burden. 3 sources indexed (2011–2025), with 0 interaction records on file.
How it works, mechanistically.
Core mechanism
Levetiracetam binds synaptic vesicle protein 2A, modulating neurotransmitter release and reducing neuronal hypersynchrony involved in seizure propagation. It does not meaningfully induce or inhibit cytochrome P450 enzymes. Renal elimination is the major clearance pathway, so reduced kidney function increases exposure.2,3
Dosing & protocol.
May be taken with or without food. Extended-release tablets should be swallowed whole and not crushed, chewed, or split.3
Full safety detail.
Side effects
- Somnolence
- Asthenia or fatigue
- Dizziness
- Irritability
- Depression
- Aggression or behavioral changes
- Suicidal thoughts or behavior warning for antiepileptic drugs
- Coordination difficulties
- Rare serious dermatologic or hypersensitivity reactions
Sources, by evidence tier.
Numbered references. Citations throughout the page link here.
Reviews & position papers
2- 1Antiepileptic drugs and suicidality: an expert consensus statementMula M et al. · Epilepsia · 2013
Consensus review supports monitoring for mood and behavior changes during antiseizure therapy.
- 2Levetiracetam: a review of its use in epilepsyLyseng-Williamson KA · Drugs · 2011
Review describes SV2A mechanism, broad antiseizure use, and limited drug-metabolism interactions.
Reference material
1- 3LEVETIRACETAM EXTENDED-RELEASE tablets, US Prescribing InformationURLU.S. National Library of Medicine · DailyMed · 2025
Labeling specifies 1000 mg once-daily initiation, titration to 3000 mg/day, renal adjustment, behavioral warnings, and hypersensitivity contraindication.
Common questions.
Quick answers about Levetiracetam Extended-Release, drawn from the data on this page.
What is Levetiracetam Extended-Release?
Levetiracetam extended-release is an antiseizure medication used once daily for focal-onset seizures and other seizure types depending on labeling and clinician judgment. It has minimal hepatic metabolism and few pharmacokinetic interactions, but behavioral adverse effects such as irritability, depression, aggression, or suicidality can be clinically important. Dosing must be adjusted for kidney function.
What is Levetiracetam Extended-Release used for?
Commonly cited benefits of Levetiracetam Extended-Release include: Adjunctive treatment of focal-onset seizures; Once-daily adherence support compared with immediate-release dosing; Low pharmacokinetic interaction burden. NutriStack rates the overall evidence as strong.
What is a typical dose of Levetiracetam Extended-Release?
A typical adult dose of Levetiracetam Extended-Release is Initiate 1000 mg once daily; increase by 1000 mg every 2 weeks as needed to a maximum recommended dose of 3000 mg once daily, with renal dose adjustment.. The commonly recommended form is Extended-release oral tablet swallowed whole once daily. These are general ranges, not personalized advice; confirm the right dose with a clinician.
What are the side effects of Levetiracetam Extended-Release?
Reported side effects include somnolence, asthenia or fatigue, dizziness, irritability, depression, aggression or behavioral changes. This is educational information; check with a healthcare professional before use.
How strong is the evidence for Levetiracetam Extended-Release?
NutriStack rates this as Strong, meaning multiple high-quality meta-analyses or systematic reviews converge on the same finding. Full tier criteria are at https://nutristackapp.com/methodology/evidence-tiers.
Use this with your stack
Levetiracetam Extended-Release in NutriStack.
Add it to your stack, see how it interacts with everything else you take, and get a Stack Score that updates the moment it does.