The mainstay treatment of bipolar disorders is:
ANS- (b) Lithium
Bipolar I (requires 1 type of episode)—≥ 1 manic episode +/− a hypomanic or depressive episode (may be separated by any length of time).
Bipolar II (requires 2 types of episodes)—a hypomanic and a depressive episode (no history of manic episodes).
Lithium is a mood stabilizer for treatment for bipolar disorders.