Background: The aim of this study was to evaluate efficacy and tolerability of levetiracetam (LEV) in patients with different epilepsy syndromes.
Methods: We evaluated epileptic patients seen in the previous 18 months, including all patients with present or past exposure to LEV. Tolerability of LEV therapy was evaluated in all patients; efficacy was evaluated only in patients who had received LEV for at least six months. Two hundred and two patients were included in the study. Patients were considered responsive when showing a > 50% reduction in seizures frequency and non-responders when seizure frequency was unchanged, worsened or showed a reduction < 50%.
Results: Thirty patients did not complete six months of LEV treatment and dropped out. 57.4% of the patients with uncontrolled seizures treated for at least six months were responders, with 27.7% seizure free. Adverse effects were observed in 46 patients (23%) and were responsible for early drop out in 26. Adverse effects occurred significantly more often in females than in males (30.6% vs 13.2%); moreover, nearly 30% of women with adverse effects complained of more than one adverse effect, while this was never observed in male patients.
Conclusions: Our study shows LEV as a well tolerated and effective treatment, both in monotherapy and as an add-on. Further investigations on larges samples are needed to investigate the issue of gender-related tolerability.
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