Levothyroxine is a medication commonly prescribed to treat an underactive thyroid, a condition known as hypothyroidism. The thyroid gland produces hormones that regulate metabolism, energy levels, and overall health. When the thyroid doesn't produce enough of these hormones, taking levothyroxine helps restore normal hormone levels, allowing the body to function properly. Patients usually take levothyroxine as a daily pill, and it’s important to follow the doctor's instructions carefully. Regular blood tests may be needed to monitor hormone levels and adjust the dosage if necessary. With proper treatment, most people can manage their symptoms effectively and lead healthy lives.