Endocrine practice : official journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists
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Hypothyroidism requires life-long thyroid hormone replacement therapy in most patients. Oral levothyroxine (LT4) is an established safe and effective treatment for hypothyroidism, but some issues remain unsettled. ⋯ AACE = American Association of Clinical Endocrinologists FT3 = free triiodothyronine FT4 = free thyroxine LT3 = levotriiodothyronine LT4 = levothyroxine MeSH = medicine medical subject headings QoL = quality of life TSH = thyroid-stimulating hormone.