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Well, at her advancing age and keeping in mind recent past history of 3 episodes of stroke, one needs to tackle her condition with a lot of caution and use the drugs judiciously and under strict vigilance of a primary doctor.
I will suggest that to counter her hallucinations and anxiety, she can be placed on a very low dose of olanzapine ( an antipsychotic ) , say at a dose of 1.25 mg - 2.5 mg at bedtime, first starting with lower dose and then after 5 days trying the next higher dose of 2.5 mg at bedtime. Such low dose of this anti psychotic medication may take a few extra days to manage her symptoms, but the same shall prove to relatively safer for her fragile state. So using this drug at this dose shall take care of her symptoms.
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