Methsuximide was added to the therapeutic regimens of 25 children with intractable epilepsy. In 15 patients the drug was well tolerated and resulted in a 50% or greater reduction in seizure frequency. No serious or irreversible adverse effects were seen.
Pharmacokinetics of N-desmethylmethsuximide in pediatric patients.
M V Miles et al.
The Journal of pediatrics, 114(4 Pt 1), 647-650 (1989-04-01)
British journal of pharmacology, 100(4), 800-806 (1990-08-01)
1. Succinimide derivatives can be either convulsant (tetramethylsuccinimide (TMS)), or anticonvulsant (ethosuximide (ES); alpha-methyl-alpha-phenylsuccinimide (MPS)). ES, an anticonvulsant succinimide, has previously been shown to block calcium currents of thalamic neurones, while the convulsant succinimide TMS blocks gamma-aminobutyric acid (GABA) responses
Serum protein binding of desmethyl-methsuximide (DM-MSM) in serum from 23 patients on polytherapy were determined using ultrafiltration and high-performance liquid chromatography. Desmethyl-methsuximide, The active metabolite of methsuximide (MSM), was found to have a moderate protein binding ranging between 45% and
A method for the determination of the anti-epileptic drug methsuximide (MSM) and its active metabolite N-desmethylmethsuximide (NDM) is presented. 5-Methyl-5-phenylhydantoin is used as the internal standard. A simple solid-phase extraction procedure utilizing disposable reversed-phase C18 columns is described. Samples are
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