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  • Title: Anticonvulsant potency of common antiepileptic drugs in the gerbil.
    Author: Frey HH, Löscher W, Reiche R, Schultz D.
    Journal: Pharmacology; 1983; 27(6):330-5. PubMed ID: 6424144.
    Abstract:
    In gerbils, 'minor' (myoclonic) and 'major' (clonic-tonic) seizures were induced by blowing at the animals with compressed air. The anticonvulsant ED50 of the following drugs was determined after oral administration against both types of seizures: phenytoin, phenobarbital, carbamazepine, sodium valproate, ethosuximide, and diazepam. Valproate, ethosuximide, and diazepam were most potent against 'minor' seizures which could not or only partially be suppressed by phenytoin or carbamazepine, respectively. The 'grand mal' drugs phenytoin, phenobarbital, and carbamazepine were, on the other hand, more potent against 'major' than against 'minor' seizures. When phenobarbital was administered for several days, a strong induction of hepatic microsomal enzymes occurred.
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