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Levothyroxine has a half-life of 7.5 days when taken daily, so about six weeks is required for it to reach a steady level in the blood. [5] Side effects from excessive doses include weight loss, trouble tolerating heat, sweating, anxiety, trouble sleeping, tremor, and fast heart rate. [5]
The team behind the recent study had previously shown that levothyroxine use, particularly in people it is used in unnecessarily, can have an array of unwanted side effects.
Lighter Side. Politics. Science & Tech. ... Taking levothyroxine (a medication used to correct hypothyroidism) could potentially lead to hyperthyroidism during earlier stages of treatment, adds ...
It is used to treat hypothyroidism, [1] but less preferred than levothyroxine. [1] It is taken by mouth. [1] Maximal effects may take up to three weeks to occur. [1] Side effects may occur from excessive doses. [1] This may include weight loss, fever, headache, anxiety, trouble sleeping, arrhythmias, and heart failure. [1]
For patients taking levothyroxine, TSH may be boosted by discontinuing levothyroxine for 3–6 weeks. [6] 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 liothyronine permits a withdrawal ...
In 2020, levothyroxine, a manufactured form of thyroxine, was the second most commonly prescribed medication in the United States, with more than 98 million prescriptions. [ 9 ] [ 10 ] Levothyroxine is on the World Health Organization's List of Essential Medicines .
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