How to evaluate a patient with sialorrhea

Question from a Member: I am looking for advice for a patient with bipolar I disorder, recently manic and psychotic. He’s on olanzapine 22.5 mg/day, quetiapine 175 mg/day, and lithium ER 900 mg/day. He’s experiencing dysphagia while supine at night, which resolves when he sits up and drinks water. He’s also experiencing sialorrhea, which is…