Levetiracetam Linked To More Sleepiness And Fatigue

What was studied

This paper reviewed published studies on neuropsychiatric side effects reported with levetiracetam, an anti-seizure medicine. It focused on people age 16 and older with epilepsy who did not already have a psychiatric condition.

The authors searched major medical databases for studies published through March 14, 2024. They found 33 studies overall. For the pooled statistical analysis, they used 7 randomized trials comparing levetiracetam with placebo and 4 randomized trials comparing levetiracetam with other anti-seizure medicines.

What they found

Across the studies, sleepiness or drowsiness was the most commonly reported neuropsychiatric side effect, followed by depression. Other reported problems included fatigue, aggression or agitation, trouble with thinking or memory, irritability, anxiety, and behavior changes.

When results were combined, people taking levetiracetam had a higher risk of somnolence or drowsiness and a higher risk of fatigue than people taking placebo. When levetiracetam was compared with other anti-seizure medicines, the analysis did not find a significant difference in depression risk.

Limits of the evidence

This review can show associations reported in the included studies, but it cannot show exactly how often these side effects happen in every patient. Only some of the 33 studies were included in the pooled analysis, and the abstract does not give details about study quality, dose, treatment length, or how side effects were measured.

The study only included patients age 16 and older and excluded people with psychiatric comorbidity, so the findings may not apply to children or to people who already have mental health conditions. The abstract also does not report pooled results for many side effects, so there is still uncertainty about risks such as irritability, anxiety, or behavior changes.

For families and caregivers

For families, this review suggests that levetiracetam is associated with a higher risk of sleepiness and fatigue than placebo in older teens and adults. It also shows that mood and behavior symptoms have been reported, but the abstract gives less clear pooled evidence for many of those problems.

This may matter when weighing medicine benefits and side effects, especially if daytime sleepiness, low energy, or mood changes are a concern. It does not mean these effects will happen to everyone, and it does not compare all side effects clearly against other seizure medicines.

What to watch next

Further studies could help by tracking mood, behavior, and thinking side effects in a standard way, including in children and in people with prior mental health conditions.

Terms in this summary

levetiracetam

A medicine used to help prevent seizures.

neuropsychiatric adverse effects

Side effects that affect the brain, mood, behavior, or thinking.

systematic review

A study that collects and summarizes results from many earlier studies using a planned method.

meta-analysis

A method that combines data from several studies to estimate an overall result.

placebo

A look-alike treatment with no active medicine, used for comparison in research.

anti-seizure medicine

A drug used to prevent or reduce seizures.

somnolence

Sleepiness or drowsiness.

asthenia

Physical weakness or low energy, often described as fatigue.