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The effects of phenobarbitone dose on plasma phenobarbitone levels in epileptic patients
Abstract:
The relation between plasma phenobarbitone level and phenobarbitone dose was studied in 121 patients. The relation changed with age, the dosage requirement (on a day weight basis) tending to fall as patients grew older. Males under 5 years had a higher dosage requirement than females of the same age, but otherwise sex did not affect the relationship, nor did the concurrent intake of the anticonvulsants phenytoin, carbamazepine or sulthiame. In the individual, plasma phenobarbitone levels tended to increase out of proportion of dosage increases. These findings can provide a basis for prescribing appropriate phenobarbitone doses in epileptics.
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