<unk>  may be used when there is an impaired conversion of T4 to T3 in peripheral tissues. The dose of<unk>  for hypothyroidism is a lower amount than levothyroxine due it being a higher concentrated synthetic medication. About 25 μg of<unk>  is equivalent to 100 μg of levothyroxine. In thyroid cancer or Graves' disease, ablation therapy with radioactive iodine (131I) can be used to remove trace thyroid tissue that may remain after thyroidectomy (surgical excision of the gland). For 131I therapy to be effective, the trace thyroid tissue must be avid to iodine, which is achieved by elevating the person's TSH levels. For patients taking levothyroxine, TSH may be boosted by discontinuing levothyroxine for 3–6 weeks. This long period of hormone withdrawal is required because of levothyroxine's relatively long biological half-life, and may result in symptoms of hypothyroidism in the patient. The shorter half-life of<unk>  permits a withdrawal period of two weeks, which may minimize hypothyroidism symptoms. One protocol is to discontinue levothyroxine, then prescribe<unk>  while the T4 levels are falling, and finally stop the<unk>  two weeks before the radioactive iodine treatment.<unk>  may also be used for myxedema coma because of its quicker onset of action when compared to levothyroxine. Use for the treatment of obesity is not recommended. Depression Adding<unk>  to tricyclic antidepressants appears useful, especially in women. An algorithm developed from the STAR*D trial recommends<unk>  as an option when people have failed two antidepressant medications. Pregnancy Per the U.S. FDA,<unk>  is categorized as Pregnancy Category A. Thyroid hormone is minimally transferred to the fetus or placenta, however as of October 2014, studies have not shown any adverse effects to the fetus. Hypothyroid mothers should continue to take thyroid hormone replacement therapy throughout pregnancy to avoid adverse events. Nursing Breastmilk contains a low amount of thyroid hormone, so it is important to exercise caution when breastfeeding while taking<unk> . Elderly Older people should be started on lower doses of<unk> . Plasma T3 concentrations in this population are decreased by 25% to 40%. TSH must be routinely monitored since there is a risk of coronary artery disease, hyperthyroidism and excessive bone loss from inadequate or abnormal thyroid replacement.
Liothyronine
Cortisone
Cortisone acetate
Desoxycorticosterone acetate
Fludrocortisone
Estriol
Estriol 
Potassium iodide