Definitions for levothyroxine

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  1. levothyroxine(Noun)

    The synthetic form of the thyroid hormone, thyroxine

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  1. Levothyroxine

    Levothyroxine, also L-thyroxine or T4, is a synthetic form of the thyroid hormone thyroxine, which is normally secreted by the follicular cells of the thyroid gland. It is also used to treat thyroid hormone deficiency, and occasionally to prevent the recurrence of thyroid cancer. Like its naturally secreted counterpart, levothyroxine is chemically in the chiral L-form. The related drug dextrothyroxine was used in the past as a treatment for hypercholesterolemia but was withdrawn due to cardiac side-effects.


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