Which of the following is NOT a mood stabilizer used for treating bipolar disorder?

Sertraline is identified as not being a mood stabilizer for treating bipolar disorder because it is classified as a selective serotonin reuptake inhibitor (SSRI) and is primarily used as an antidepressant. While SSRIs can be utilized to treat depression in patients with bipolar disorder, they are not mood stabilizers and can potentially provoke manic or hypomanic episodes if used alone in these patients.

In contrast, lithium, valproic acid, and carbamazepine are recognized as mood stabilizers. They are specifically designed to help control the mood swings associated with bipolar disorder. Lithium has been used for decades and is considered a first-line treatment. Valproic acid and carbamazepine are alternatives that are effective in stabilizing mood and preventing episodes of mania and depression in individuals with bipolar disorder. Understanding the distinct classifications of these medications is crucial in managing bipolar disorder effectively.