Levetiracetam: A Novel Antiepileptic Drug

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Abstract
Levetiracetam is a new antiepileptic drug, structurally and mechanistically dissimilar to other marketed antiepileptic drugs. It is effective in reducing partial seizures in patients with epilepsy, both as adjunctive treatment and as monotherapy. Levetiracetam has many therapeutic advantages for patients with epilepsy. It has favorable pharmacokinetic characteristics (good bioavailability, linear pharmacokinetics, insignificant protein binding, lack of hepatic metabolism, and rapid achievement of steady‐state concentrations) and a low potential for drug interactions. Recommended starting dosages are considered to be clinically effective; therefore, patients can have some protection from seizures soon after they begin levetiracetam. The most common adverse effects observed with levetiracetam are mild and include somnolence, asthenia, and dizziness. Clinical experience and data from meta‐analyses indicate that levetiracetam is well tolerated, with efficacy comparable or slightly better than that observed with other new antiepileptic drugs. Levetiracetam may be particularly useful in patients who are unresponsive to other antiepileptic drugs, patients receiving drugs with increased potential for drug interactions, or those with hepatic impairment.

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