WOODCLIFF LAKE, N.J.--(BUSINESS WIRE)--Eisai Inc. today announced that the U.S. Food and Drug Administration (FDA) has approved BANZEL® (rufinamide) Oral Suspension, 40 mg/mL, for the adjunctive treatment of seizures associated with Lennox-Gastaut syndrome (LGS) in children 4 years and older and adults. The oral suspension formulation is bioequivalent to the currently marketed BANZEL tablet formulation on a milligram per milligram basis and will be available for prescription use by late March 2011.