• TRADE NAMES: Emeside; Ethymal; Petnidan; Pyknolepsinum; Simatin; Zarondan; Zarontin (Pfizer)
  • INDICATIONS: Absence (petit mal) seizures
  • CLASS: Antiepileptic; succinimide
  • HALF-LIFE: 50–60 hours

Cases of birth defects have been reported with ethosuximide

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Page last updated 08/20/2025

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Incidence - Help

<1% 1‑5% 5‑10% 10‑15% 15‑20% 20‑30% >30%

Seriousness - Help

Hospitalization possible
Life threatening
Fatal

Warnings in other populations - Help

BreastfeedingBreast feeding

GeriatricGeriatric

PediatricPediatric