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Commonly prescribed thyroid drug levothyroxine was linked with bone mass and bone density loss in a cohort of older adults in a recent study. Common thyroid drug levothyroxine linked to bone mass loss
As a supplement it is used to treat vitamin B12 deficiency including pernicious anemia. [1] [2] Other uses include treatment for cyanide poisoning, Leber's optic atrophy, and toxic amblyopia. [3] [4] It is given by injection into a muscle or vein, [2] by pill or sublingually. Side effects are generally few. [2]
Levothyroxine is typically used to treat hypothyroidism, [12] and is the treatment of choice for people with hypothyroidism [13] who often require lifelong thyroid hormone therapy. [ 14 ] It may also be used to treat goiter via its ability to lower thyroid-stimulating hormone (TSH), which is considered goiter-inducing.
They recommend levothyroxine as the preferred treatment. Some practitioners refuse to use desiccated thyroid. [9] Each 64.8 mg (one grain) of thyroid extract contains approximately 38 μg and 9 μg of measurable levothyroxine (T4) and liothyronine (T3), respectively. [1] Arguments against desiccated thyroid include:
Treatment should take into account the cause and severity of the condition. [6] Treatment is done by vitamin B 12 supplementation, either by mouth or by injection. [3] Initially in high daily doses, followed by less frequent lower doses, as the condition improves. [3] If a reversible cause is found, that cause should be corrected if possible. [11]
Levothyroxine is the chemical name of the manufactured version of T 4, which is metabolised more slowly than T 3 and hence usually only needs once-daily administration. Natural desiccated thyroid hormones are derived from pig thyroid glands, and are a "natural" hypothyroid treatment containing 20% T 3 and traces of T 2, T 1 and calcitonin.
Thyroxine, also known as T 4, is a hormone produced by the thyroid gland.It is the primary form of thyroid hormone found in the blood and acts as a prohormone of the more active thyroid hormone, triiodothyronine (T 3). [1]
Vitamin B 12 levels affect the histone modification H3K36me3, which suppresses illegitimate transcription outside of gene promoters. Mice undergoing in vivo reprogramming were found to become depleted in B 12 and show signs of methionine starvation while supplementing reprogramming mice and cells with B 12 increased reprogramming efficiency ...