Lamotrigine

Author:
  • ABAaron H. Burstein
    Aaron H. Burstein
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Abstract
Lamotrigine is a novel antiepileptic that, although its mechanism is not completely understood, appears to affect voltage‐activated sodium channels, resulting in inhibition of the presynaptic release of the excitatory neurotransmitter glutamate. It is well absorbed after oral administration. Its route of elimination is hepatic glucuronidation, which is susceptible to both hepatic microsomal enzyme‐inducing and ‐inhibiting agents. In clinical trials lamotrigine was effective as add‐on therapy for refractory partial seizures in adults. Small trials suggest the feasibility of monotherapy, but further controlled trials are warranted to support this practice. Additional data indicate the utility of lamotrigine for generalized seizures. Reported side effects are rash, nausea, vomiting, blurred vision, diplopia, and vision abnormalities. Lamotrigine appears to be an attractive alternative to currently available antiepileptics.

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