Common mood stabilizers include which of the following?

Mood stabilizers are primarily used in the treatment of mood disorders, especially bipolar disorder, to help regulate mood swings. Among the common medications identified as mood stabilizers, lithium is the most well-known. It is effective in preventing both manic and depressive episodes in individuals with bipolar disorder.

Anticonvulsants, such as valproate, lamotrigine, and carbamazepine, are also used as mood stabilizers. They can help stabilize mood by modulating neurotransmitter activity and are often prescribed when lithium is not effective or suitable for the patient.

The other options contain medications that do not primarily function as mood stabilizers. Fluoxetine and bupropion are antidepressants; duloxetine and venlafaxine are also antidepressants but belong to the serotonin-norepinephrine reuptake inhibitor (SNRI) class, which is primarily used for treating depression and anxiety disorders. Hydrochlorothiazide and metoprolol are diuretics and beta-blockers, respectively, which are used to treat hypertension and do not have a role in mood stabilization.

Thus, lithium and anticonvulsants are recognized in clinical practice as key mood stabilizers for managing mood disorders, making this choice the correct answer.