Have you tried looking at the possible side effects of the medications you take? Sometimes they will reveal any reactions to foods, although not often. It is probably just an idiosyncratic reaction you're having, but one
that you need to question, in my view, with your psychiatrist if the symptoms don't resolve themselves pretty rapidly.

A major problem that is emergencing through knowledge now about foods and some bipolar patients (those who are sensitive to it) is wheat. It contains exorphins in the gluten which act on the opiate centers of the brain and can cause many forms of illness for some, as well as addiction.