to antidepressants, lithium was much more effective than placebo. The studies in the review ranged from the 1970s to the 2000s.

While SSRIs have been mentioned above as a drug class in which lithium is used to augment, there are other classes in which lithium is added to increase effectiveness. Such classes are antipsychotics (used for bipolar disorder) as well as antiepileptic drugs (used for both