levothyroxine


Also found in: Dictionary, Wikipedia.
Related to levothyroxine: hypothyroidism, levothyroxine sodium

levothyroxine

 [le″vo-thi-rok´sin]
l-thyroxine, obtained from the thyroid gland of domesticated food animals or prepared synthetically; used for replacement therapy in hypothyroidism and for the prophylaxis and treatment of goiter and of thyroid cancer; administered orally, intravenously, or intramuscularly as the sodium salt.

levothyroxine

/le·vo·thy·rox·ine/ (le″vo-thi-rok´sēn) -thyroxine, obtained from the thyroid gland of domesticated food animals or prepared synthetically; used as the sodium salt in the treatment of hypothyroidism and the treatment and prophylaxis of goiter and thyroid carcinoma.

levothyroxine

(lē′və-thī-rŏk′sēn′, -sĭn)
n.
An isomer of thyroxine, C15H10I4NO4, used in the form of its sodium salt to treat thyroxine deficiency.

levothyroxine

Thyroid hormone as a sodium salt used to treat hypothyroidism. The drug is on the WHO official list. A brand name is Thyronine.

levothyroxine

the pharmaceutical name for the thyroid hormone thyroxine (T4); used for replacement therapy in hypothyroidism.
References in periodicals archive ?
This can leave the thyroid unable to produce any hormone, so you'll eventually need to start taking levothyroxine.
While the human thyroid gland secretes both levothyroxine and triiodothyronine (T3), the conventional approach to treating hypothyroidism is to administer levothyroxine by itself.
Mood, cognition, and quality of life (QoL) did not differ whether patients' levothyroxine dose was adjusted to achieve thyroid-stimulating hormone (TSH) levels in the low-normal, high-normal, or mildly elevated range.
Patients who had these treatment indications were treated with levothyroxine.
A total of 368 patients received levothyroxine at a starting dose of 50 [micro]g daily, or 25 [micro]g if the body weight was <50 kg or the patient had coronary heart disease, with dose adjustment according to the TSH level; 369 patients received placebo with mock dose adjustment.
Patients with hypothyroid ophthalmopathy can continue on thyroid replacement with levothyroxine with simultaneous treatment of Grave's ophthalmopathy.
Researchers adjusted the statistical models for age, race, body mass index (BMI), heart failure etiology, as well as amiodarone and levothyroxine (LT4) use.
Investigators performed an international double-blind placebo-controlled trial comparing levothyroxine (368 adults) against matching placebo (369 adults) in community-dwelling people whose medical records indicated subclinical hypothyroidism.
Hatipoglu recommends that if you still don't feel well despite levothyroxine treatment, ask your doctor about combination T3 and T4 therapy, and also discuss the possibility that another, undiagnosed condition is causing your symptoms to persist.
There is, however, speculation that patients might develop hyperthyroidism from being given excessive doses of levothyroxine, but this can be avoided by initiating treatment of subclinical hypothyroidism with low-dose levothyroxine (25-50 meg).
6 Levothyroxine Sodium Mylan 00378180301 11,369,071
4] and TPO-Ab levels are associated with breast cancer characteristics [48]; however, the impact of levothyroxine treatment is unclear.