Which thyroid hormone to use if one is needed for lithium-induced hypothyroidism

A Member posted a clinical question, which I have restated as follows: In the subset of patients with lithium-induced hypothyroidism in whom adding thyroid hormone makes sense, which one should be added — T4 or T3? Importantly, not all cases of lithium-induced hypothyroidism need any treatment. For a discussion of when thyroid hormone treatment is…