Tablets

Digitalizing (loading) dose: Rapid.

Adults: 0.6 mg followed by 0.4 mg in 4-6 hr; then, 0.2 mg q 4-6 hr until therapeutic effect achieved.

Digitalizing (loading) dose: Slow. Adults: 0.2 mg b.i.d. for 4 days.

Digitalizing (loading) dose: children.

After the neonatal period, the doses are as follows: Under one year:

0.045 mg/kg/day divided into three, four, or more doses with 6 hr between doses; one to two years:

0.04 mg/kg/day divided into three, four, or more doses with 6 hr between doses; over two years: 0.03 mg/kg/day (0.75 mg/m2) divided into three, four, or more doses with 6 hr between doses.

Maintenance dose: PO. Adults: 0.05-0.3 mg/day (usual: 0.15 mg/day). Children: Give one-tenth of the digitalizing dose.

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