Felbamate

OBJECTIVE: To provide an up-to-date review of the current literature on felbamate (FBM) and its use as an antiepileptic medication (AEM). DATA SOURCES: All published literature (manuscripts and abstracts) on FBM was reviewed. The initial bibliography (up to September 1992) was provided by the manufacturer (Carter-Wallace Laboratories); subsequent literature was obtained from American Epilepsy Society presentations in December 1992 and manuscripts published up to January 1993. STUDY SELECTION/DATA EXTRACTION: All pertinent literature was reviewed. Information from the publications was abstracted and organized by the author. DATA SYNTHESIS: FBM is effective in complex partial seizures either as monotherapy or as an adjunct in patients receiving other AEMs. In addition, it has shown efficacy in some seizures associated with the Lennox-Gastaut syndrome. Adverse effects appear to be mild. When FBM is given as monotherapy, the primary adverse effects are insomnia and weight loss. Patients receiving multiple AEMs may have increased adverse effects. CONCLUSIONS: FBM appears to be an effective new AEM. Additional studies as to its role in newly diagnosed and pregnant patients are needed. Pharmacokinetic studies in children, patients with renal failure, and patients on nonepilepsy drugs also are needed.

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