Clinically, an inadequate improvement in
baseline depressive symptoms, despite treatment at therapeutic
doses necessitates the use of preferred options including the
need for a critical re-evaluation of symptoms and the potential
of switching either within the same drug class (e.g., from one
SSRI to another) (Trivedi and Daly, 2008) or switching between
antidepressant classes (e.g., switching from an SSRI to a SNRI).