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Zyprexa dosage for Bipolar I Disorder (Manic or Mixed Episodes)

Usual Monotherapy Dose

Oral olanzapine should be administered on a once-a-day schedule without regard to meals, generally beginning with 10 or 15 mg. Dosage adjustments, if indicated, should generally occur at intervals of not less than 24 hours, reflecting the procedures in the placebo-controlled trials. When dosage adjustments are necessary, dose increments/decrements of 5 mg QD are recommended.

Short-term (3-4 weeks) antimanic efficacy was demonstrated in a dose range of 5 mg to 20 mg/day in clinical trials. The safety of doses above 20 mg/day has not been evaluated in clinical trials.

Maintenance Monotherapy

The benefit of maintaining bipolar patients on monotherapy with oral Zyprexa at a dose of 5 to 20 mg/day, after achieving a responder status for an average duration of 2 weeks, was demonstrated in a controlled trial [see Clinical Studies]. The physician who elects to use Zyprexa for extended periods should periodically reevaluate the long-term usefulness of the drug for the individual patient.

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