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Zarontin Dosage

Generic name: ethosuximide
Drug class: Succinimide anticonvulsants

Medically reviewed by  A Ras MD. Last updated Oct 6, 2022


 Recommended Adult Dosing

Dosage forms:  CAP: 250 mg; SOL: 250 mg per 5 mL

Seizures, absence

[250-750 mg PO bid]
Start: 250 mg PO bid, may incr. by 250 mg/day q4-7 days; Max: 1.5 g/day; Info: adjust dose based on tx response and serum levels; taper dose gradually to D/C

Renal dosing

CrCl <10: decr. usual dose by 25%
HD: no adjustment, on dialysis days admin. after dialysis; no supplement; PD: no adjustment; no supplement

Hepatic dosing

[not defined]
hepatic impairment: caution advised



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