<prompt> mood stabilizer used in the tretament of rapid cyclingvaproatelithiumcarbamezepinelamotrigine  <response>: Lamotrigine is a mood stabilizer which works best in BIPOLAR DEPRESSION Lithium is a mood stabilizer which works best in BIPOLAR MANIA valproate is a mood stabilizer which works best in RAPID CYCLING ref. kaplon and sadock, synopsis of psychiatry, 11 thedition, pg no.935 