Левотироксин is a synthetic form of the thyroid hormone thyroxine (T4), used primarily to treat гипотиреоз, a condition where the thyroid gland does not produce enough hormones. It helps to restore normal hormone levels, improving metabolism, energy levels, and overall health. This medication is typically taken orally and is available in various dosages. Regular monitoring of thyroid hormone levels is essential to ensure the correct dosage and effectiveness of левотироксин. Side effects are generally rare but can include symptoms of hyperthyroidism if the dose is too high.