Can be given by IV infusion or injection, or SC injection
Remission induction
- Continuous
-
Rapid injection: starting dose 2 mg/kg/day. Administer for
10 days. Obtain daily blood counts. If no antileukaemic
effect or toxicity noted, increase to 4 mg/kg/day and
maintain until therapeutic response or toxicity is
evident.
-
0.5‒1.0 mg/kg/day may be given in an infusion of up to 24
hours duration. After 10 days this initial daily dose may
be increased to 2 mg/kg/day subject to toxicity. Continue
to toxicity or until remission occurs.
- Intermittent treatment:
-
3‒5 mg/kg/day are administered IV on each of 5 consecutive
days. After a 2‒90 day rest period, a further course is
given. Continue until response or toxicity occurs.
Improvement usually occurs between 7‒64 days after the beginning
of therapy (mean 28 days).
Patients seem to tolerate higher doses when given by rapid IV
injection as compared with slow infusion due to the rapid
metabolism of cytarabine.
Maintenance therapy
Remissions induced by cytarabine, or by other drugs, may be
maintained by IV or SC injection of 1 mg/kg once or twice
weekly.