Levetiracetam Sandoz (Levetiracetam)

Levetiracetam is an antiepileptic medication used to control seizure activity in epilepsy.

• Partial seizures: Reduces frequency of focal onset seizures in patients with epilepsy.
• Generalized tonic‑clonic seizures: Decreases occurrence of bilateral convulsive seizures.
• Myoclonic seizures: Controls brief, shock‑like muscle jerks associated with certain epilepsy syndromes.
• Adjunct therapy for Lennox‑Gastaut syndrome: Helps lower seizure burden when combined with other agents.

• Levetiracetam binds to the synaptic vesicle protein SV2A, a regulator of neurotransmitter release. This interaction modulates calcium‑dependent exocytosis, stabilizing neuronal membranes and decreasing hyper‑synchronised firing. By reducing the release of excitatory neurotransmitters, the drug lowers neuronal excitability and helps prevent the initiation and propagation of epileptic discharges. The precise downstream pathways remain under investigation, but the net effect is a dampening of abnormal cortical activity without significant interaction with G‑protein coupled receptors or ion channels.

Levetiracetam may cause a range of adverse reactions, varying in frequency and severity.

Common Side Effects

• Dizziness: Sensation of light‑headedness or unsteadiness.
• Somnolence: Increased sleepiness or fatigue.
• Irritability: Mood changes including agitation.
• Headache: Mild to moderate cranial pain.

Serious or Rare Side Effects

• Severe allergic reaction: Including rash, swelling, or anaphylaxis.
• Stevens‑Johnson syndrome: Rare skin disorder with blistering.
• Suicidal thoughts or behavior: Emergence of depressive symptoms or self‑harm ideation.

When prescribing levetiracetam, several safety considerations should be observed.

• Dose adjustment in renal impairment: Reduce dose according to creatinine clearance.
• Monitor for behavioral changes: Observe patients for irritability or mood swings.
• Avoid abrupt discontinuation: Taper under medical supervision to prevent seizure worsening.
• Pregnancy and lactation: Use only if benefit outweighs risk; data limited.
• Drug interactions: Review concomitant medications for potential interactions.
• Store at ambient temperature: Keep below 25°C in original container, protect from moisture.

Levetiracetam can interact with other medicines, requiring attention to avoid reduced efficacy or increased toxicity.

Major Interactions (Avoid)

• Concomitant use with carbamazepine: May reduce levetiracetam plasma levels.
• Co‑administration with enzyme‑inducing antiepileptics (phenytoin, phenobarbital): May decrease efficacy.
• Strong inhibitors of renal tubular secretion (e.g., probenecid): May increase levetiracetam levels.

Moderate Interactions (Monitor Closely)

• Combination with other CNS depressants (benzodiazepines, alcohol): May enhance sedation.
• Use with antidepressants (SSRIs): Potential for increased behavioral side effects.
• Concurrent use with immunosuppressants (e.g., tacrolimus): Monitor drug levels.