function of lithium
Lithium is concentrated within the thyroid and can inhibit thyroid synthesis and release which can lead to hypothyroidism. Where hypothyroidism exists, careful monitoring of thyroid function during Lithium stabilization and maintenance allows for correction of changing thyroid parameters, if any.
Lithium (Eskalith, Lithobid) is one of the most widely used and studied medications for treating bipolar disorder. Lithium helps reduce the severity and frequency of mania. It may also help relieve or prevent bipolar depression.