Levetiracetam Zentiva (Levetiracetam)

Levetiracetam is an antiepileptic drug that targets seizure activity in the central nervous system.

• Partial-onset seizures: Reduces frequency of focal seizures, improving seizure control.
• Generalized tonic-clonic seizures: Decreases occurrence of bilateral convulsive episodes.
• Myoclonic seizures: Helps prevent rapid, brief muscle jerks associated with myoclonus.

• Levetiracetam binds to the synaptic vesicle protein SV2A, a key regulator of neurotransmitter release. This interaction modulates synaptic vesicle exocytosis, stabilizing neuronal firing and reducing hyper‑excitability. By influencing calcium‑dependent release of glutamate and other excitatory transmitters, the drug diminishes the propagation of epileptiform activity without directly affecting ion channels or G‑protein pathways. The precise downstream effects remain under investigation, but the overall result is a net decrease in seizure susceptibility.

Levetiracetam may be associated with a range of adverse reactions, varying from mild to severe.

Common Side Effects

• Dizziness: Sensation of light‑headedness or unsteady balance.
• Fatigue: Persistent tiredness or lack of energy.
• Headache: Mild to moderate cranial pain.
• Somnolence: Increased sleepiness during the day.
• Irritability: Mood changes including agitation.
• Nausea: Stomach discomfort or urge to vomit.

Serious or Rare Side Effects

• Stevens‑Johnson syndrome: Severe skin reaction with blistering.
• Suicidal thoughts: Emergence of depressive ideation or self‑harm urges.
• Severe depression: Marked mood decline requiring medical attention.
• Blood dyscrasias: Unusual drops in white blood cells or platelets.
• Hypersensitivity reactions: Anaphylaxis or angioedema.
• Hepatic injury: Signs of liver dysfunction such as jaundice.

Before prescribing Levetiracetam, clinicians should consider several precautionary measures to ensure patient safety.

• Renal impairment: Adjust dose based on creatinine clearance.
• Hepatic impairment: Monitor liver function tests regularly.
• Psychiatric symptoms: Observe for mood changes, depression, or aggression.
• Concomitant CNS depressants: Use caution as additive sedation may occur.
• Pregnancy: Risk category unknown; discuss potential benefits and risks with the patient.
• Store at room temperature: Keep in the original container, protect from moisture and light.

Levetiracetam can interact with other medicines, influencing its effectiveness or safety profile.

Major Interactions (Avoid)

• Carbamazepine: Increases metabolism of levetiracetam, lowering its plasma levels.
• Phenobarbital: Induces hepatic enzymes that reduce levetiracetam exposure.
• Phenytoin: Accelerates clearance, potentially diminishing seizure control.

Moderate Interactions (Monitor Closely)

• Alcohol: Combined use may enhance central nervous system depression.
• Other antiepileptics: May require dose adjustments to maintain therapeutic effect.
• Oral contraceptives: May experience reduced efficacy, consider alternative contraception.