Levetiracetam Krka (Levetiracetam)

Levetiracetam is an antiepileptic drug that modulates neuronal excitability to reduce seizure activity.

• Partial seizures: helps achieve seizure freedom or significant reduction in frequency.
• Generalized tonic‑clonic seizures: contributes to control of convulsive episodes.
• Myoclonic seizures: reduces the occurrence of rapid, involuntary muscle jerks.

• Levetiracetam binds to the synaptic vesicle protein SV2A, a key regulator of neurotransmitter release. This interaction modulates synaptic vesicle exocytosis, decreasing neuronal hyper‑excitability and stabilising abnormal electrical activity that underlies seizures. The precise downstream pathways remain under investigation, but the SV2A binding is central to its antiepileptic effect.

Levetiracetam may cause a range of adverse reactions, most of which are mild to moderate in severity.

Common Side Effects

• Dizziness: transient feeling of light‑headedness.
• Fatigue: reduced energy levels.
• Somnolence: increased sleepiness.
• Headache: mild to moderate cranial pain.
• Irritability: mood changes or agitation.
• Nausea: occasional stomach upset.

Serious or Rare Side Effects

• Severe allergic reactions: rash, swelling, or anaphylaxis.
• Stevens‑Johnson syndrome: rare severe skin eruption.
• Blood disorders: leukopenia or thrombocytopenia.
• Suicidal thoughts: emergence of depressive or suicidal ideation.
• Multi‑organ hypersensitivity: systemic inflammatory response.
• Severe skin rash: bullous or exfoliative dermatitis.

Before initiating therapy, clinicians should evaluate patient‑specific factors and monitor for potential complications.

• Renal impairment: adjust dose based on creatinine clearance.
• Hepatic impairment: monitor liver function and consider dose modification.
• Pregnancy: risk category unknown; discuss benefits versus risks with a healthcare professional.
• Psychiatric disorders: observe for mood changes, depression, or aggression.
• Concomitant CNS depressants: use caution as additive sedation may occur.
• Store at ambient temperature: keep in the original container, protect from moisture and direct sunlight.

Levetiracetam can interact with several medications, influencing its efficacy or safety profile.

Major Interactions (Avoid)

• Carbamazepine: may lower levetiracetam plasma concentrations.
• Phenytoin: may reduce levetiracetam levels, compromising seizure control.
• Phenobarbital: can decrease levetiracetam exposure.

Moderate Interactions (Monitor Closely)

• Alcohol: may enhance central nervous system depression.
• Other antiepileptics: may require dose adjustments to maintain therapeutic effect.
• Renal dialysis: can alter drug clearance, necessitating timing considerations.