Study of the Effects of Pantoprazole on Levels of Prescribed Psychiatric Medications

The purpose of this 9-day study is to determine if: 1. Pantoprazole modifies the steady-state plasma concentrations of orally administered psychotropic medications including valproic acid, lithium, and second-generation antipsychotics (i.e., aripiprazole, asenapine, clozapine, lurasidone, olanzapine, paliperidone, quetiapine, risperidone, ziprasidone) 2. Serum gastrin levels change within a week of starting or stopping pantoprazole