Background: Clozapine may be effective in adults and adolescents with treat
ment-resistant bipolar disorder. Olanzapine has a receptor affinity profile
similar to that of clozapine. Methods: The responses of seven consecutive
adolescents (ages 12-17) with DSM-IV bipolar disorder, manic episode, treat
ed with olanzapine were evaluated. Response to olanzapine was rated as mark
ed, moderate, minimal, none or worse. Results: Five (71%) adolescents showe
d a marked or moderate response. The mean +/- SD olanzapine dose was 0.146
+/- 0.086 mg/kg/day (11 +/- 6 mg/day). Conclusion: Olanzapine may have anti
manic effects in some adolescents with acute mania. Controlled studies of o
lanzapine in adolescent bipolar disorder appear to be warranted. (C) 1999 E
lsevier Science B.V. All rights reserved.