Health Dictionary Find a Doctor

Mesuximide

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Overview

Mesuximide (or methsuximide, methosuximide) is a succinimide anticonvulsant medication. It is sold as a racemate by Pfizer under the tradenames Petinutin (Switzerland)[1] and Celontin (United States).[2] 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.[3]

References

References

  1. Pfizer AG (2005). “Petinutin (Mésuximide)”. Official Pfizer AG Website (in French). Retrieved August 21, 2006.
  2. Pfizer Inc. (2008). “Celontin (methsuximide capsules, USP)”. Official Pfizer Inc. Website. Retrieved November 21, 2014.
  3. 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.

Template:Anticonvulsants


Looking for the patient version?

Back to the patient-friendly article

© 2026 MyEClinic – IFTM Institut für Telematik in der Medizin GmbH