Levetiracetam Eg (Levetiracetam)

Levetiracetam is an antiepileptic drug used to control various seizure types.

• Partial seizures: reduces the frequency and severity of focal onset seizures.
• Generalized tonic‑clonic seizures: helps prevent convulsive episodes that involve the whole brain.
• Myoclonic seizures: diminishes sudden, brief muscle jerks associated with myoclonic epilepsy.

• Levetiracetam binds to the synaptic vesicle protein SV2A, a key regulator of neurotransmitter release. This interaction modulates synaptic transmission, decreasing neuronal excitability and stabilising abnormal electrical activity that underlies seizure generation.

Levetiracetam may cause a range of adverse reactions, varying from mild to severe.

Common Side Effects

• Dizziness: transient sensation of light‑headedness.
• Fatigue: feeling unusually tired or low in energy.
• Headache: mild to moderate pain in the head region.
• Irritability: increased emotional sensitivity or agitation.
• Nausea: mild upset stomach or urge to vomit.
• Nasal congestion: blocked or runny nose.

Serious or Rare Side Effects

• Severe skin reactions: such as Stevens‑Johnson syndrome or toxic epidermal necrolysis.
• Mood changes: including depression, suicidal thoughts, or aggression.
• Hematologic abnormalities: rare cases of low blood cell counts.
• Hepatic dysfunction: elevated liver enzymes indicating liver stress.
• Respiratory depression: uncommon but potentially life‑threatening breathing difficulty.
• Anaphylaxis: rare severe allergic response requiring immediate medical attention.

Before initiating therapy, consider the following precautions.

• Pregnancy: Category B – use only if potential benefit justifies the potential risk to the fetus.
• Renal impairment: dose may need adjustment in patients with reduced kidney function.
• Psychiatric history: monitor for mood changes, especially in patients with prior depression or anxiety.
• Concomitant CNS depressants: may enhance sedation or dizziness.
• Driving and machinery: avoid operating heavy equipment until individual response is known.
• Store at ambient temperature: keep below 25°C, retain in original packaging, protect from moisture and direct sunlight.

Levetiracetam can interact with other medicines, affecting efficacy or safety.

Major Interactions (Avoid)

• Carbamazepine: may reduce levetiracetam plasma levels, decreasing seizure control.
• Phenobarbital: can lower levetiracetam concentrations, potentially compromising effectiveness.

Moderate Interactions (Monitor Closely)

• Valproic acid: may increase levetiracetam levels, requiring clinical monitoring.
• Rifampin: can induce metabolism, lowering levetiracetam exposure.
• Oral contraceptives: levetiracetam may reduce hormonal contraceptive efficacy; advise alternative birth control.
• Alcohol: may exacerbate central nervous system depression and dizziness.
• Other antiepileptics: combined use may increase risk of adverse CNS effects.