What should be done to get rid of the nausea that comes with depression and anxiety?

Approaches: Treat the underlying depression & anxiety. See a mental health provider. Cognitive behavioral therapy can be very beneficial- medications as well. Probably the simplest way to reduce nausea is with ginger. You can drink slightly flattened ginger ale or nibble on crystallized ginger. Or pour boiling water over freshly sliced organ ginger & steep x 5 min in a covered pot. Sip.