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|AHFS/Drugs.com||Consumer Drug Information|
|By mouth (tablets)|
|Elimination half-life||3–9 hours|
|CompTox Dashboard (EPA)|
|Chemical and physical data|
|Molar mass||204.225 g/mol g·mol−1|
|3D model (JSmol)|
Mechanism of action
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Similar to phenytoin.
- 1957 Peganone was granted Food and Drug Administration (FDA) approval to Abbott Laboratories for treatment of grand mal (tonic clonic) and partial complex (psychomotor) seizures.
- 2003 Peganone was acquired from Abbott Laboratories by Ovation Pharmaceuticals (specialty pharmaceutical company who acquire underpromoted branded pharmaceutical products).
Indications and usage
Ethotoin is indicated for tonic-clonic and partial complex seizures.
Ethotoin is available in 250 mg tablets. It is taken orally in 4 to 6 divided doses per day, preferably after food.
Ethotoin, 3-ethyl-5-phenylimidazolidine-2,4-dione, is synthesized by the reaction of benzaldehyde oxynitrile, with urea or ammonium hydrocarbonate, which forms an intermediate urea derivative which on acidic conditions cyclizes to 5-phenylhydantoin. Alkylation of this product using ethyliodide leads to the formation of ethotoin.
- Schwade ED, Richards RK, Everett GM (May 1956). "Peganone, a new antiepileptic drug". Dis Nerv Syst. 17 (5): 155–8. PMID 13317788.
- Shorvon, S.D.; Fish, David R.; Perucca, Emilio; Dodson, W. Edwin, eds. (2004). The Treatment of Epilepsy. Blackwell Publishing. ISBN 0-632-06046-8.
- Drugs.com: Ethotoin
- PEGANONE 250 mg Ethotoin Tablets, USP (PDF)