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Levothyroxine is taken on an empty stomach about half an hour to an hour before meals. [21] As such, thyroid replacement therapy is usually taken 30 minutes prior to eating in the morning. [14] For patients with trouble taking levothyroxine in the morning, bedtime dosing is effective, as well. [14]
For example, Dennehy says, calcium can interact with a common prescription thyroid medication (levothyroxine) making it less effective, so you’ll want to take them at least four hours apart.
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 ]
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 .
Levothyroxine, a drug used to treat hypothyroidism, can lead to reduced bone mass and density in older adults with normal thyroid levels, a small cohort study has shown.
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 ...