Ethotoin is a hydantoin derivative and anticonvulsant. Ethotoin exerts an antiepileptic effect without causing general central nervous system depression. The mechanism of action is probably very similar to that of phenytoin. The latter drug appears to stabilize rather than to raise the normal seizure threshold, and to prevent the spread of seizure activity rather than to abolish the primary focus of seizure discharges.
Indication
For the control of tonic-clonic (grand mal) and complex partial (psychomotor) seizures.
Pharmacology
Ethotoin is a hydantoin derivative and anticonvulsant. Ethotoin exerts an antiepileptic effect without causing general central nervous system depression. The mechanism of action is probably very similar to that of phenytoin. The latter drug appears to stabilize rather than to raise the normal seizure threshold, and to prevent the spread of seizure activity rather than to abolish the primary focus of seizure discharges.
Toxicity
Symptoms of overdose include drowsiness, loss of or impaired muscle coordination, nausea, visual disturbance, and, at very high doses, coma.
Affected Organisms
Humans and other mammals
Biotransformation
Hepatic. The drug exhibits saturable metabolism with respect to the formation of N-deethyl and p-hydroxyl-ethotoin, the major metabolites.
Absorption
Fairly rapidly absorbed, however, the extent of oral absorption is not known.
Half Life
3 to 9 hours
References
•
SCHWADE ED, RICHARDS RK, EVERETT GM: Peganone, a new antiepileptic drug. Dis Nerv Syst. 1956 May;17(5):155-8.
[Pubmed]
An imidazolidine-2,4-dione that is hydantoin substituted by ethyl and phenyl at positions 3 and 5, respectively. An antiepileptic, it is less toxic than phenytoin but also less effective.
References
PubChem Literature
From Data Sources
• SCHWADE ED, RICHARDS RK, EVERETT GM: Peganone, a new antiepileptic drug. Dis Nerv Syst. 1956 May;17(5):155-8. Pubmed