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DOSAGE AND ADMINISTRATION
Zarontin is administered by the oral route. The initial dose for patients 3 to 6 years of age is one capsule (250 mg) per day; for patients 6 years of age and older, 2 capsules (500 mg) per day. The dose thereafter must be individualized according to the patient's response. Dosage should be increased by small increments. One useful method is to increase the daily dose by 250 mg every four to seven days until control is achieved with minimal side effects. Dosages exceeding 1.5 g daily, in divided doses, should be administered only under the strictest supervision of the physician. The optimal dose for most pediatric patients is 20 mg/kg/day. This dose has given average plasma levels within the accepted therapeutic range of 40 to 100 mcg/mL. Subsequent dose schedules can be based on effectiveness and plasma level determinations.
Zarontin may be administered in combination with other anticonvulsants when other forms of epilepsy coexist with absence (petit mal). The optimal dose for most pediatric patients is 20 mg/kg/day.
Zarontin is supplied as:
NDC 0071-0237-24:Bottles of 100. Each capsule contains 250 mg ethosuximide.
Store at 25° C (77° F); excursions permitted to 15-30° C (59-86° F) [see USP ControUed Room Temperature].
Distributed by: Parke-Davis, Division of Pfizer Inc, NY, NY 10017. Revised March 2012
Last reviewed on RxList: 5/21/2012
This monograph has been modified to include the generic and brand name in many instances.
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