|Systematic (IUPAC) name|
|Metabolism||Hepatic (demethylation and glucuronidation)|
1.4–2.6 hours (mesuximide)
28–38 hours (active metabolite)
|Mol. mass||203.237 g/mol|
Mesuximide (or methsuximide, methosuximide) is a succinimide anticonvulsant medication. It is sold as a racemate by Pfizer under the tradenames Petinutin (Switzerland) and Celontin (United States). The therapeutic efficacy of methosuximide is largely due to its pharmacologically active metabolite, N-desmethylmethosuximide, which has a longer half-life and attains much higher plasma levels than its parent.
- Pfizer AG (2005). "Petinutin (Mésuximide)". Official Pfizer AG Website (in French). Retrieved August 21, 2006.
- Pfizer Inc. (2008). "Celontin (methsuximide capsules, USP)". Official Pfizer Inc. Website. Retrieved November 21, 2014.
- Porter RJ, Penry JK, Lacy JR, Newmark ME, Kupferberg HJ. Plasma concentrations of phensuximide, methosuximide, and their metabolites in relation to clinical efficacy. Neurology 29: 1509-1513, 1979.