noun
PharmacologyAn anticonvulsant drug similar to but somewhat more toxic than ethosuximide, used chiefly for the treatment of refractory absence and myoclonic seizures; N,2-dimethyl-2-phenylsuccinimide, C₁₂ H₁₃ NO₂.
International Nonproprietary Name (1996): mesuximide.
Origin
1960s; earliest use found in National Formulary. From meth- + -suximide.
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