Oleanz Plus, which contains fluoxetine and olanzapine, might change sleep patterns, which in turn can affect dreams. Olanzapine is a antipsychotic has a sedative effect (given its receptive binding in brain) that promotes deep sleep, also known as slow-wave sleep, which may result in more frequent or vivid dreams. REM sleep is affected by the SSRI antidepressant- fluoxetine, which frequently intensifies or modifies dream experiences. Some patients also report having more intense dreams, having strange or vivid dreams, and occasionally having nightmares as well. Usually, these changes are more noticeable in the early phases of treatment but can continue.
Next Steps
If bothersome you should consult a psychiatrist but nothing to worry about change in dream pattern.