What is the clinical use of levothyroxine?

Levothyroxine is primarily used to replace missing thyroid hormone in patients with hypothyroidism, a condition where the thyroid gland does not produce enough thyroid hormones. This synthetic thyroid hormone acts as a replacement therapy, helping to normalize metabolic processes and maintain appropriate energy levels, growth, and development in the body.

By providing the body with the necessary thyroid hormone, levothyroxine helps alleviate symptoms of hypothyroidism, which can include fatigue, weight gain, sensitivity to cold, and depression. This therapeutic approach is crucial in managing hypothyroidism, ensuring that patients can lead healthier lives. Other options listed pertain to different thyroid conditions or immune responses, making them unsuitable for this specific use of levothyroxine.