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  • Title: Controlled trial of lamotrigine (Lamictal) for refractory partial seizures.
    Author: Jawad S, Richens A, Goodwin G, Yuen WC.
    Journal: Epilepsia; 1989; 30(3):356-63. PubMed ID: 2498073.
    Abstract:
    The antiepileptic effect of lamotrigine (LTG) was assessed in a double-blind, placebo-controlled crossover trial in 24 adult patients with refractory partial seizures. LTG or placebo was added to existing antiepileptic drugs (AEDs). The dose of LTG varied from 75 to 400 mg daily. Three patients did not complete the trial. One was withdrawn from the trial with ataxia, tiredness, dyspnea, and diplopia while receiving LTG and died 18 days later of invasive carcinoma involving the liver. A second patient was withdrawn during baseline for contravening admission criteria, and a third received LTG in error during both treatment periods. Twenty-one patients (12 men and 9 women) completed the trial. An analysis of seizure counts in the 12-week treatment period with LTG showed a statistically significant reduction in seizures as compared with placebo for total seizures (p less than 0.002), partial seizures (p less than 0.002), and secondarily generalized seizures (p less than 0.05). The analysis of total seizure days showed a significant reduction during LTG treatment (p less than 0.002). There were no statistically significant changes in plasma concentrations of phenytoin (PHT), carbamazepine (CBZ), primidone (PRM), or phenobarbital (PB) between the two treatment periods. The most common adverse events reported during the trial were diplopia, drowsiness, tiredness, ataxia, and headache, but although these were more frequent during LTG treatment, the differences from placebo were not statistically significant. No hematological or biochemical changes were noted.
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